EP0082620A2
Expired / Lapsed
EP
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Nitrogenation of hydrocarbons to produce cyclic imides and dinitriles
Assignee: Standard Oil Co
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Filing: 1982-12-02
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Granted: —
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Expires: 2002-12-02
Abstract
Abstract A process for the nitrogenation of hydrocarbons, which results in the production of cyclic imides and nitriles comprises contacting hydrocarbons with molecular oxygen and a nitrogenating agent, including ammonia or primary amines, in the presence of an oxidation catalyst containing variable calency metal oxides, in the vapor phase at elevated temperature.
Inventors
- 👤 Ernest Carl Milberger
- 👤 Eunice Kie Teng Wong
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:36
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/448; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07C; C07C253/00; C07C253/24; C07C253/26; C07C255/00; C07C255/01; C07C255/06; C07C255/07; C07C255/08; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y02P20/582
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
44 words
A process for the nitrogenation of hydrocarbons which comprises contacting the hydrocarbon with ammonia or a primary amine and molecular oxygen or an oxygen-containing gas in the vapor phase at an elevated temperature in the presence of an oxidation catalyst comprising variable valency-metal oxides.
Claim 2
Dependent Claim
44 words
A process for the nitrogenation of hydrocarbons which comprises contacting the hydrocarbon with ammonia or a primary amine and molecular oxygen or an oxygen-containing gas in the vapor phase at an elevated temperature in the presence of an oxidation catalyst comprising variable valency-metal oxides.
Claim 3
Dependent Claim
54 words
A process for the production of cyclic imides comprising contacting hydrocarbons having at least 4 carbon atoms with ammonia or a primary amine and molecular oxygen or an oxygen-containing gas in the vapor phase at elevated temperature in the presence of an oxidation catalyst comprising variable valency-metal oxides, and recovering the cyclic imide product.
Claim 4
Dependent Claim
54 words
A process for the production of cyclic imides comprising contacting hydrocarbons having at least 4 carbon atoms with ammonia or a primary amine and molecular oxygen or an oxygen-containing gas in the vapor phase at elevated temperature in the presence of an oxidation catalyst comprising variable valency-metal oxides, and recovering the cyclic imide product.
Claim 5
Dependent Claim
22 words
A process as claimed in claim 1 characterised in that hydrocarbons are selected from alkanes, alkenes, alkadienes, aryls, and alkyl substituted aryls.
Claim 6
Dependent Claim
27 words
A process as claimed in any of claims 1 to 3 characterised in that the hydrocarbon is an unsaturated hydrocarbon containing from 4 to 9 carbon atoms.
Claim 7
Dependent Claim
15 words
A process as claimed in claim 4 characterised in that the unsaturated hydrocarbon is butadiene.
Claim 8
Dependent Claim
48 words
A process as claimed in any of claims 1 to 5 characterised in that the oxidation catalyst comprises an oxide of at least one of molybdenum, antimony, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, tungsten, manganese, iron, cobalt, nickel, copper, ruthenium, platinum, palladium, rhodium, iridium and mixtures thereof.
Claim 9
Dependent Claim
59 words
A process as claimed in claim 6 characterised in that the oxidation catalyst includes oxides of promoter elements selected from at least one of titanium, zirconium, niobium, tantalum, vanadium, iron, aluminum, zinc, cadmium, platinum, ruthenium, boron, germanium, tin, phosphorus, arsenic, bismuth, tellurium, silver, the rare earths, thallium, thorium, uranium, the alkali metals, the alkaline earth metals, and mixtures thereof.
Claim 10
Dependent Claim
19 words
A process as claimed in any of claims 1 to 7 characterised in that oxidation catalyst contains molybdenum oxide.
Claim 11
Dependent Claim
31 words
A process as claimed in any of claims 1 to 8 characterised in that the catalyst contains the mixed oxides of molybdenum and antimony and optionally titanium or niobium or both.
Claim 12
Dependent Claim
128 words
A process as claimed in claim 1 characterised in that the catalyst is represented by the formula wherein A is selected from metals or oxides of molybdenum, tungsten, magnesium, aluminum, nickel or mixtures thereof, D is selected from niobium, zirconium, titanium, tantalum and mixtures thereof, E is selected from lithium, silver, cerium, cadmium, cobalt, arsenic, zinc, germanium, bismuth, ruthenium, platinum, uranium or mixtures thereof, and wherein, a is O to 0.2, b is about 1 to 9, c is about 1 to 9, d is O to 1, e is 0 to 1, f is 0 to 6, g is 0 to 1, d + e + f is greater than O, and x is the number of oxygens required to satisfy the valence of the other elements.
Claim 13
Dependent Claim
31 words
A process as claimed in any of claims 1 to 10 characterised in that the ratio of ammonia or amine to hydrocarbon is at least 0.5:1 preferably from 0.5:1 to 2:1.
Claim 14
Dependent Claim
26 words
A process as claimed in any of claims 1 to 11 characterised in that the temperature is between 250°C to 600°C, preferably between 375 to 475°C.
Claim 15
Dependent Claim
24 words
A process as claimed in any of claims 1 to 12 characterised in that the ratio of oxygen to hydrocarbon is 2:1 to 30:1.
Claim 16
Dependent Claim
39 words
A process for the production of dinitriles comprising contacting a hydrocarbon with ammonia and molecular oxygen or an oxygen-containing gas in the vapor phase at elevated temperature in the presence of an oxidation catalyst as defined in claim 10.
Claim 17
Dependent Claim
41 words
A process for the production of fumaronitrile and maleonitrile comprising contacting butadiene with ammonia and molecular oxygen or an oxygen containing gas in the vapor phase at elevated temperature in the presence of an oxidation catalyst as defined in claim 10.
References Cited (Backward Citations)
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