US4699895A
Expired / Lapsed
US
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Process for the manufacture of catalysts for the production of maleic anhydride
Assignee: BP Corp North America Inc
•
Filing: 1985-05-01
•
Granted: 1987-10-13
•
Expires: 2005-05-01
Abstract
Abstract A process for the manufacture of a phosphorus-vanadium and phosphorus-vanadium co-metal catalysts suitable for use in the manufacture of maleic anhydride from benzene, butane, and other C 4 hydrocarbons which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl halide in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of the hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream is disclosed. The catalysts are useful for the manufacture of maleic anhydride from butane, benzene, and other C 4 hydrocarbon feedstocks.
Inventors
- 👤 Robert C. Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:16
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/215; B; B01; B01J; B01J23/00; B01J23/002; B01J27/00; B01J27/14; B01J27/186; B01J27/195; B01J27/198; B01J27/199; B01J2523/00
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
137 words
A process for the manufacture of a phosphorus-vanadium oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having from about 2 to about 10 carbon atoms, with a phosphoryl halide in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 2
Dependent Claim
137 words
A process for the manufacture of a phosphorus-vanadium oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having from about 2 to about 10 carbon atoms, with a phosphoryl halide in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the vanadium compound is vanadium pentoxide.
Claim 4
Dependent Claim
157 words
A process for the manufacture of a phosphorus-vanadium oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having from about 2 to about 10 carbon atoms, with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, wherein the phosphorus-vanadium oxide catalyst is dissolved and the dissolved phosphorus-vanadium oxide catalyst is solidified by evaporation or distillation of the organic solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 5
Dependent Claim
157 words
A process for the manufacture of a phosphorus-vanadium oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having from about 2 to about 10 carbon atoms, with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, wherein the phosphorus-vanadium oxide catalyst is dissolved and the dissolved phosphorus-vanadium oxide catalyst is solidified by evaporation or distillation of the organic solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 6
Dependent Claim
10 words
The process of claim 1 wherein the ether is tetrahydrofuran.
Claim 7
Dependent Claim
140 words
A process for the manufacture of a phosphorus-vanadium oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having from about 2 to about 10 carbon atoms, with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and an alkyl ester of orthophosphoric acid at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 8
Dependent Claim
140 words
A process for the manufacture of a phosphorus-vanadium oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having from about 2 to about 10 carbon atoms, with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and an alkyl ester of orthophosphoric acid at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 9
Dependent Claim
42 words
The process of claim 5 wherein the alkyl ester of orthophosphoric acid has the following structure: (RO).sub.3 P═O wherein R is hydrogen or a C 1 to C 4 alkyl, at least one R being a C 1 to C 4 alkyl
Claim 10
Dependent Claim
11 words
The process of claim 6 wherein the alkyl ester is triethylphosphate.
Claim 11
Dependent Claim
11 words
The process of claim 6 wherein the alkyl ester is trimethylphosphate.
Claim 12
Dependent Claim
164 words
A process for the manufacture of a phosphorus-vanadium oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having from about 2 to about 10 carbon atoms, with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst at a temperature of about 300° C. to about 500° C. by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream and a phosphorus compound selected from the group consisting of: ##STR3## wherein R is phenyl or an alkyl radical of 1 to 6 carbon atoms and X is H or R.
Claim 13
Dependent Claim
164 words
A process for the manufacture of a phosphorus-vanadium oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having from about 2 to about 10 carbon atoms, with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst at a temperature of about 300° C. to about 500° C. by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream and a phosphorus compound selected from the group consisting of: ##STR3## wherein R is phenyl or an alkyl radical of 1 to 6 carbon atoms and X is H or R.
Claim 14
Dependent Claim
137 words
A process for the manufacture of a phosphorus-vanadium co-metal oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl halide in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 15
Dependent Claim
137 words
A process for the manufacture of a phosphorus-vanadium co-metal oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl halide in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 16
Dependent Claim
12 words
The process of claim 10 wherein the vanadium compound is vanadium pentoxide.
Claim 17
Dependent Claim
166 words
A process for the manufacture of a phosphorus-vanadium co-metal oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, wherein the phosphorus-vanadium co-metal oxide catalyst is dissolved and the dissolved phosphorus-vanadium co-metal oxide catalyst is solidified by evaporation or distillation of the organic solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 18
Dependent Claim
166 words
A process for the manufacture of a phosphorus-vanadium co-metal oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, wherein the phosphorus-vanadium co-metal oxide catalyst is dissolved and the dissolved phosphorus-vanadium co-metal oxide catalyst is solidified by evaporation or distillation of the organic solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 19
Dependent Claim
10 words
The process of claim 10 wherein the ether is tetrahydrofuran.
Claim 20
Dependent Claim
164 words
A process for the manufacture of a phosphorus-vanadium co-metal oxide catalyst wherein the co-metal is selected from the group consisting of zinc, molybdenum, niobium, tungsten, uranium, cobalt and tin suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and an alkyl ester of orthophosphoric acid at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 21
Dependent Claim
164 words
A process for the manufacture of a phosphorus-vanadium co-metal oxide catalyst wherein the co-metal is selected from the group consisting of zinc, molybdenum, niobium, tungsten, uranium, cobalt and tin suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and an alkyl ester of orthophosphoric acid at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 22
Dependent Claim
42 words
The process of claim 14 wherein the alkyl ester of orthophosphoric acid has the following structure: (RO).sub.3 P═O wherein R is hydrogen or a C 1 to C 4 alkyl, at least one R being a C 1 to C 4 alkyl.
Claim 23
Dependent Claim
11 words
The process of claim 15 wherein the alkyl ester is triethylphosphate.
Claim 24
Dependent Claim
11 words
The process of claim 15 wherein the alkyl ester is trimethylphosphate.
Claim 25
Dependent Claim
170 words
A process for the manufacture of a phosphorus-vanadium co-metal oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst at a temperature of about 300° C. to about 500° C. by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream and a phosphorus compound selected from the group consisting of: ##STR4## wherein R is phenyl or an alkyl radical of 1 to 6 carbon atoms and X is H or R.
Claim 26
Dependent Claim
170 words
A process for the manufacture of a phosphorus-vanadium co-metal oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst at a temperature of about 300° C. to about 500° C. by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream and a phosphorus compound selected from the group consisting of: ##STR4## wherein R is phenyl or an alkyl radical of 1 to 6 carbon atoms and X is H or R.
Claim 27
Dependent Claim
143 words
A process for the manufacture of a phosphorus-vanadium-molybdenum oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 28
Dependent Claim
143 words
A process for the manufacture of a phosphorus-vanadium-molybdenum oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 29
Dependent Claim
12 words
The process of claim 19 wherein the vanadium compound is vanadium pentoxide.
Claim 30
Dependent Claim
162 words
A process for the manufacture of a phosphorus-vanadium-molybdenum oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, wherein the phosphorus-vanadium-molybdenum oxide catalyst is dissolved and the dissolved phosphorus-vanadium-molybdenum oxide catalyst is solidified by evaporation or distillation of the organic solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 31
Dependent Claim
162 words
A process for the manufacture of a phosphorus-vanadium-molybdenum oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, wherein the phosphorus-vanadium-molybdenum oxide catalyst is dissolved and the dissolved phosphorus-vanadium-molybdenum oxide catalyst is solidified by evaporation or distillation of the organic solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 32
Dependent Claim
10 words
The process of claim 19 wherein the ether is tetrahydrofuran.
Claim 33
Dependent Claim
149 words
A process for the manufacture of a phosphorus-vanadium-molybdenum oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with an alkyl ester of orthophosphoric acid in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and an alkyl ester of orthophosphoric acid at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 34
Dependent Claim
149 words
A process for the manufacture of a phosphorus-vanadium-molybdenum oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with an alkyl ester of orthophosphoric acid in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and an alkyl ester of orthophosphoric acid at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 35
Dependent Claim
42 words
The process of claim 23 wherein the alkyl ester of orthophosphoric acid has the following structure: (RO).sub.3 P═O wherein R is hydrogen or a C 1 to C 4 alkyl, at least one R being a C 1 to C 4 alkyl.
Claim 36
Dependent Claim
11 words
The process of claim 24 wherein the alkyl ester is triethylphosphate.
Claim 37
Dependent Claim
11 words
The process of claim 24 wherein the alkyl ester is trimethylphosphate.
Claim 38
Dependent Claim
168 words
A process for the manufacture of a phosphorus-vanadium-molybdenum oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst at a temperature of about 300° C. to about 500° C. by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream and a phosphorus compound selected from the group consisting of: ##STR5## wherein R is phenyl or an alkyl radical of 1 to 6 carbon atoms and X is H or R.
Claim 39
Dependent Claim
168 words
A process for the manufacture of a phosphorus-vanadium-molybdenum oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst at a temperature of about 300° C. to about 500° C. by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream and a phosphorus compound selected from the group consisting of: ##STR5## wherein R is phenyl or an alkyl radical of 1 to 6 carbon atoms and X is H or R.
Claim 40
Dependent Claim
143 words
A process for the manufacture of a phosphorus-vanadium-zinc oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 41
Dependent Claim
143 words
A process for the manufacture of a phosphorus-vanadium-zinc oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 42
Dependent Claim
12 words
The process of claim 28 wherein the vanadium compound is vanadium pentoxide.
Claim 43
Dependent Claim
10 words
The process of claim 28 wherein the ether is tetrahydrofuran.
Claim 44
Dependent Claim
42 words
The process of claim 30 wherein the alkyl ester of orthophosphoric acid has the following structure: (RO).sub.3 P═O wherein R is hydrogen or a C 1 to C 4 alkyl, at least one R being a C 1 to C 4 alkyl.
Claim 45
Dependent Claim
162 words
A process for the manufacture of a phosphorus-vanadium-zinc oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, wherein the phosphorus-vanadium-zinc oxide catalyst is dissolved and the dissolved phosphorus-vanadium-zinc oxide catalyst is solidified by evaporation or distillation of the organic solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million,by weight of the reactor feed gas stream.
Claim 46
Dependent Claim
162 words
A process for the manufacture of a phosphorus-vanadium-zinc oxide catalyst suitable for use in the manufacture of maleic anhydride from butane, benzene or another C 4 hydrocarbon feedstock which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, wherein the phosphorus-vanadium-zinc oxide catalyst is dissolved and the dissolved phosphorus-vanadium-zinc oxide catalyst is solidified by evaporation or distillation of the organic solvent and activating the catalyst by the addition of butane, benzene or another C 4 hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million,by weight of the reactor feed gas stream.
Claim 47
Dependent Claim
133 words
A process for the manufacture of a phosphorus-vanadium-zinc oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane or another hydrocarbon feedstock and an alkyl ester of orthophosphoric acid at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 48
Dependent Claim
133 words
A process for the manufacture of a phosphorus-vanadium-zinc oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of butane or another hydrocarbon feedstock and an alkyl ester of orthophosphoric acid at a temperature of about 300° C. to about 500° C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream.
Claim 49
Dependent Claim
11 words
The process of claim 32 wherein the alkyl ester is triethylphosphate.
Claim 50
Dependent Claim
11 words
The process of claim 32 wherein the alkyl ester is trimethylphosphate.
Claim 51
Dependent Claim
164 words
A process for the manufacture of a phosphorus-vanadium-zinc oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst at a temperature of about 300° C. to about 500° C. by the addition of butane, benzene, butadiene or butene or another hydrocarbon feedstock and water wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream and a phosphorus compound selected from the group consisting of: ##STR6## wherein R is phenyl or an alkyl radical of 1 to 6 carbon atoms and X is H or R.
Claim 52
Dependent Claim
164 words
A process for the manufacture of a phosphorus-vanadium-zinc oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting at a temperature of about 0° C. to about 200° C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl chloride in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst at a temperature of about 300° C. to about 500° C. by the addition of butane, benzene, butadiene or butene or another hydrocarbon feedstock and water wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream and a phosphorus compound selected from the group consisting of: ##STR6## wherein R is phenyl or an alkyl radical of 1 to 6 carbon atoms and X is H or R.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |