US3975299A
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Production of acid hydrocarbon conversion catalysts
Assignee: BP PLC
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Filing: 1974-06-10
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Granted: 1976-08-17
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Expires: 1994-06-10
Abstract
Abstract A process for the production of a solid acidic catalyst which process comprises reacting a compound of formula XF 5 wherein X is phophorus, arsenic, antimony, bismuth, tantalum, vanadium or niobium with an inorganic oxide containing surface hydroxyl groups and having an Ho valve of less than -3.0. In a preferred embodiment alumina is partially fluorinated or sulphonated prior to reaction with the compound XF 5 , in which X is preferably antimony.
Inventors
- 👤 Elizabeth Anne Crathorne
- 👤 Ian Valentine Howell
- 👤 Robert Chalmers Pitkethly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:08
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; B; B01; B01J; B01J27/00; B01J27/06; B01J27/08; B01J27/12; B01J27/14; B01J37/00; B01J37/22; B01J37/26; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/60; C07C4/00; C07C4/02; C07C4/06; C07C4/08; C07C4/10; C07C5/00; C07C5/22; C07C5/2206; C07C5/2226; C07C5/2246; C07C5/2253; C07C5/27; C07C5/2767; C07C5/277; C07C5/2778; C07C5/2786; C07C5/2789; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42; C07C2527/00; C07C2527/06; C07C2527/133; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
69 words
A process for the production of a solid acidic catalyst suitable for use in hydrocarbon conversion reactions which process consists essentially of reacting antimony tetrafluoride at a temperature in the range of -50° to +140°C. with an inorganic oxide selected from the group consisting of silica, alumina, boria, and mixtures thereof, said inorganic oxide or mixture thereof having surface hydroxyl groups and an Ho value of less than -3.0.
Claim 2
Dependent Claim
69 words
A process for the production of a solid acidic catalyst suitable for use in hydrocarbon conversion reactions which process consists essentially of reacting antimony tetrafluoride at a temperature in the range of -50° to +140°C. with an inorganic oxide selected from the group consisting of silica, alumina, boria, and mixtures thereof, said inorganic oxide or mixture thereof having surface hydroxyl groups and an Ho value of less than -3.0.
Claim 3
Dependent Claim
108 words
A process for the production of a solid acidic catalyst suitable for use in hydrocarbon conversion reactions which process consists essentially of reacting a compound of formula XF 5 wherein X is a metal selected from the group consisting of arsenic, antimony, bismuth, tantalum, vanadium and niobium at a temperature in the range of -50° to +140°C. with an inorganic oxide derived from a silico-tungstic acid on a silica support by impregnating the silica with a solution of the acid followed by drying and then heating to drive off the water of crystallisation, said inorganic oxide having surface hydroxyl groups and an Ho value of less than -3.0.
Claim 4
Dependent Claim
108 words
A process for the production of a solid acidic catalyst suitable for use in hydrocarbon conversion reactions which process consists essentially of reacting a compound of formula XF 5 wherein X is a metal selected from the group consisting of arsenic, antimony, bismuth, tantalum, vanadium and niobium at a temperature in the range of -50° to +140°C. with an inorganic oxide derived from a silico-tungstic acid on a silica support by impregnating the silica with a solution of the acid followed by drying and then heating to drive off the water of crystallisation, said inorganic oxide having surface hydroxyl groups and an Ho value of less than -3.0.
Claim 5
Dependent Claim
113 words
A process for the production of a solid acidic catalyst suitable for use in hydrocarbon conversion reactions which process consists essentially of reacting a compound of formula XF 5 wherein X is a metal selected from the group consisting of arsenic, antimony, bismuth, tantalum, vanadium and niobium at a temperature in the range of -50° to +140°C. with an inorganic oxide selected from the group consisting of silica, alumina, boria, and mixtures thereof, said inorganic oxide or mixture thereof having surface hydroxyl groups and an Ho value of less than -3.0, the inorganic oxide being partially fluorinated by reaction with a fluorinating agent before reaction with the compound of formula XF 5 .
Claim 6
Dependent Claim
113 words
A process for the production of a solid acidic catalyst suitable for use in hydrocarbon conversion reactions which process consists essentially of reacting a compound of formula XF 5 wherein X is a metal selected from the group consisting of arsenic, antimony, bismuth, tantalum, vanadium and niobium at a temperature in the range of -50° to +140°C. with an inorganic oxide selected from the group consisting of silica, alumina, boria, and mixtures thereof, said inorganic oxide or mixture thereof having surface hydroxyl groups and an Ho value of less than -3.0, the inorganic oxide being partially fluorinated by reaction with a fluorinating agent before reaction with the compound of formula XF 5 .
Claim 7
Dependent Claim
113 words
A process for the production of a solid acidic catalyst suitable for use in hydrocarbon conversion reactions which process consists essentially of reacting a compound of formula XF 5 wherein X is a metal selected from the group consisting of arsenic, antimony, bismuth, tantalum, vanadium and niobium at a temperature in the range of -50° to +140°C. with an inorganic oxide selected from the group consisting of silica, alumina, boria, and mixtures thereof, said inorganic oxide or mixture thereof having surface hydroxyl groups and an Ho value of less than -3.0, the inorganic oxide being partially sulphonated by reactions with a sulphonating agent before reaction with the compound of formula XF 5 .
Claim 8
Dependent Claim
113 words
A process for the production of a solid acidic catalyst suitable for use in hydrocarbon conversion reactions which process consists essentially of reacting a compound of formula XF 5 wherein X is a metal selected from the group consisting of arsenic, antimony, bismuth, tantalum, vanadium and niobium at a temperature in the range of -50° to +140°C. with an inorganic oxide selected from the group consisting of silica, alumina, boria, and mixtures thereof, said inorganic oxide or mixture thereof having surface hydroxyl groups and an Ho value of less than -3.0, the inorganic oxide being partially sulphonated by reactions with a sulphonating agent before reaction with the compound of formula XF 5 .
Claim 9
Dependent Claim
127 words
A process for the production of a solid acidic catalyst suitable for use in hydrocarbon conversion reactions which process consists essentially of reacting a compound of formula XF 5 wherein X is a metal selected from the group consisting of arsenic, antimony, bismuth, tantalum, vanadium and niobium, at a temperature in the range of -50° to +140°C. with alumina having surface hydroxyl groups and which is reacted with sufficient of an agent selected from the group consisting of a fluorinating agent and sulphonating agent to partially fluorinate or sulphonate the alumina and wherein the unreacted fluorinating or sulphonating agent is removed before reacting the partially fluorinated or sulphonated alumina with the compound of formula XF 5 and said alumina having an Ho value of less than -3.0.
Claim 10
Dependent Claim
127 words
A process for the production of a solid acidic catalyst suitable for use in hydrocarbon conversion reactions which process consists essentially of reacting a compound of formula XF 5 wherein X is a metal selected from the group consisting of arsenic, antimony, bismuth, tantalum, vanadium and niobium, at a temperature in the range of -50° to +140°C. with alumina having surface hydroxyl groups and which is reacted with sufficient of an agent selected from the group consisting of a fluorinating agent and sulphonating agent to partially fluorinate or sulphonate the alumina and wherein the unreacted fluorinating or sulphonating agent is removed before reacting the partially fluorinated or sulphonated alumina with the compound of formula XF 5 and said alumina having an Ho value of less than -3.0.
Claim 11
Dependent Claim
22 words
A process according to claim 5 wherein the fluorinating agent is selected from the group consisting of hydrogen fluoride and ammonium fluoride.
Claim 12
Dependent Claim
31 words
A process according to claim 5 wherein the sulphonating agent is selected from the group consisting of chlorosulphonic acid (HSO 3 Cl), sulphur dioxide in admixture with air and sulphur trioxide.
Claim 13
Dependent Claim
55 words
A process according to claim 5 wherein after removing any unreacted fluorinating or sulphonating agent and prior to reacting the alumina with the compound of formula XF 5 the partially fluorinated or sulphonated alumina is treated with nitrogen at a temperature in the range 300° to 800°C. for a period of 1 to 8 hours.
Claim 14
Dependent Claim
31 words
A process according to claim 5 wherein the alumina prior to reaction with XF 5 compound is mixed with an inorganic oxide selected from the group consisting of boria and silica.
Claim 15
Dependent Claim
25 words
A process according to claim 5 wherein the extent of fluorination is such that the alumina contains from 1 to 45% by weight of fluorine.
Claim 16
Dependent Claim
18 words
A process according to claim 10 wherein the alumina contains from 1 to 25% by weight of fluorine.
Claim 17
Dependent Claim
25 words
A process according to claim 5 wherein the extent of sulphonation is such that the alumina contains from 1 to 20% by weight of sulphur.
Claim 18
Dependent Claim
18 words
A process according to claim 1 wherein the Ho value of the inorganic oxide is less than -8.0.
Claim 19
Dependent Claim
20 words
A process according to claim 1 wherein any excess of the compound XF 5 is removed from the inorganic oxide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |