Patent JPS5870554U successfully refreshed from Google Patents.
Patent US4416803A successfully refreshed from Google Patents.
US4416803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of catalysts useful for the oxidation of butane to malelic anhydride
Assignee: BP Corp North America Inc
•
Filing: 1982-05-26
•
Granted: 1983-11-22
•
Expires: 2002-05-26
Abstract
Abstract A process for the manufacture of a phosphorus/vanadium/metal oxide catalyst suitable for the oxidation of butane to maleic anhydride can be prepared by reacting orthophosphoric acid in an aliphatic alcohol and reacting a vanadium compound with an acid and the metal in the aliphatic alcohol to produce the phosphorus/vanadium/metal oxide catalyst.
Inventors
- 👤 Carl A. Udovich
- 👤 Eugene H. Hirschberg
- 👤 Ralph J. Bertolacini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:01
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; B01J2523/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
109 words
A process for the manufacture of a phosphorus/vanadium/metal oxide catalyst wherein the metal has a valence of at least II which is suitable for use in the manufacture of maleic anhydride, which process comprises reacting orthophosphoric acid in an aliphatic alcohol having 1 to 8 carbon atoms and reacting vanadium compound with an acid and the metal in the aliphatic alcohol to produce a phosphorus/vanadium/metal oxide catalyst which is soluble in the media wherein the dissolved phosphorus/vanadium/metal oxide catalyst is solidified by the evaporation of the acidified alcohol and a brown amorphous catalyst precursor is separated from the product and a deep blue phosphorus vanadium oxide catalyst is recovered.
Claim 2
Dependent Claim
109 words
A process for the manufacture of a phosphorus/vanadium/metal oxide catalyst wherein the metal has a valence of at least II which is suitable for use in the manufacture of maleic anhydride, which process comprises reacting orthophosphoric acid in an aliphatic alcohol having 1 to 8 carbon atoms and reacting vanadium compound with an acid and the metal in the aliphatic alcohol to produce a phosphorus/vanadium/metal oxide catalyst which is soluble in the media wherein the dissolved phosphorus/vanadium/metal oxide catalyst is solidified by the evaporation of the acidified alcohol and a brown amorphous catalyst precursor is separated from the product and a deep blue phosphorus vanadium oxide catalyst is recovered.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the vanadium compound is vanadium pentoxide.
Claim 4
Dependent Claim
111 words
A process for the manufacture of a phosphorus/vanadium/molybdenum oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting orthophosphoric acid in an aliphatic alcohol having 1 to 8 carbon atoms and reacting vanadium pentoxide with a molybdenum affording compound and an acid in the aliphatic alcohol to produce an acidified alcohol and a vanadium ester and reacting these to produce a vanadium/phosphorus/molybdenum oxide catalyst dissolved in the acidic alcohol wherein the dissolved phosphorus/vanadium/molybdenum oxide catalyst is solidified by evaporation of the acidified alcohol and a brown amorphous catalyst precursor is separated from the product and a deep blue phosphorus vanadium oxide catalyst is recovered.
Claim 5
Dependent Claim
111 words
A process for the manufacture of a phosphorus/vanadium/molybdenum oxide catalyst suitable for use in the manufacture of maleic anhydride from butane which process comprises reacting orthophosphoric acid in an aliphatic alcohol having 1 to 8 carbon atoms and reacting vanadium pentoxide with a molybdenum affording compound and an acid in the aliphatic alcohol to produce an acidified alcohol and a vanadium ester and reacting these to produce a vanadium/phosphorus/molybdenum oxide catalyst dissolved in the acidic alcohol wherein the dissolved phosphorus/vanadium/molybdenum oxide catalyst is solidified by evaporation of the acidified alcohol and a brown amorphous catalyst precursor is separated from the product and a deep blue phosphorus vanadium oxide catalyst is recovered.
Claim 6
Dependent Claim
83 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 orthophosphoric acid in the aliphatic alcohol to produce a vanadium ester and reacting these to produce a vanadium/phosphorus/zinc oxide catalyst dissolved in acetic acid wherein the dissolved phosphorus/vanadium/zinc oxide catalyst is solidified by evaporation of the acidified alcohol and brown amorphous catalyst precursor is separated from the product and a deep blue phosphorus vanadium oxide catalyst is recovered.
Claim 7
Dependent Claim
83 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 orthophosphoric acid in the aliphatic alcohol to produce a vanadium ester and reacting these to produce a vanadium/phosphorus/zinc oxide catalyst dissolved in acetic acid wherein the dissolved phosphorus/vanadium/zinc oxide catalyst is solidified by evaporation of the acidified alcohol and brown amorphous catalyst precursor is separated from the product and a deep blue phosphorus vanadium oxide catalyst is recovered.
Claim 8
Dependent Claim
16 words
The process of claim 1 or claim 3 or claim 4 wherein the alcohol is methanol.
Claim 9
Dependent Claim
16 words
The process of claim 1 or claim 3 or claim 4 wherein the acid is HCl.
References Cited (Backward Citations)
US3385796A
Cited
US3474041A
Cited
US3293268A
Cited
US3832359A
Cited
US3985775A
Cited
US3867411A
Cited
US3862146A
Cited
US3888886A
Cited
US3864280A
Cited
US4016105A
Cited
US4149992A
Cited
US4147661A
Cited
US4151116A
Cited
US4251390A
Cited
US4283288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |