Patent US4022847A successfully refreshed from Google Patents.
US4022847A
Expired / Lapsed
US
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Hydrocarbon conversion process using an unsupported perfluorinated polymer catalyst
Assignee: Shell USA Inc
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Filing: 1976-03-04
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Granted: 1977-05-10
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Expires: 1996-03-04
Abstract
Abstract A process and catalyst for the conversion of hydrocarbons is disclosed. The catalyst is an unsupported solid perfluorinated polymer containing pendent sulfonic acid groups. The processes include alkylation of isoparaffins, isomerization of normal alkanes, disproportionation of toluene, and the alkylation of benzene.
Inventors
- 👤 James D. McClure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:13
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; B01J31/10; C07C2/56; C07C2/58; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2794; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; B01J2231/50; B01J2231/52; C07C2531/00; C07C2531/02; C07C2531/06; C07C2531/08; C07C2531/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
An isomerization process which comprises contacting a C 4 to C 8 normal paraffin feedstock at a reaction temperature of between about 125° and about 225° C in the presence of a catalyst comprising an unsupported solid, perfluorinated polymer catalyst wherein said catalyst contains a repeating structure selected from the group of: ##STR9## where n is 0, 1 or 2; R is a radical selected from the group consisting of fluorine and perfluoroalkyl radicals having from 1 to 10 carbon atoms; and X is selected from the group consisting of: [O(CF.sub.2).sub.m ], [OCF.sub.2 CFY] or [OCFYCF.sub.2 ] where m is an integer from 2 to 10 and Y is a radical selected from the class consisting of fluorine and the trifluoromethyl radical.
Claim 2
Dependent Claim
122 words
An isomerization process which comprises contacting a C 4 to C 8 normal paraffin feedstock at a reaction temperature of between about 125° and about 225° C in the presence of a catalyst comprising an unsupported solid, perfluorinated polymer catalyst wherein said catalyst contains a repeating structure selected from the group of: ##STR9## where n is 0, 1 or 2; R is a radical selected from the group consisting of fluorine and perfluoroalkyl radicals having from 1 to 10 carbon atoms; and X is selected from the group consisting of: [O(CF.sub.2).sub.m ], [OCF.sub.2 CFY] or [OCFYCF.sub.2 ] where m is an integer from 2 to 10 and Y is a radical selected from the class consisting of fluorine and the trifluoromethyl radical.
Claim 3
Dependent Claim
14 words
A process according to claim 1 wherein said catalyst contains the repeating structure: ##STR10##
Claim 4
Dependent Claim
21 words
A process according to claim 1 wherein a catalyst stabilizer selected from the group consisting of isobutane and benzene is employed.
Claim 5
Dependent Claim
32 words
A process according to claim 3 wherein the catalyst stabilizer is isobutane and wherein the volume ratio of isobutane to normal paraffin in the feedstock is between about 0.5:1 and about 2:1.
Claim 6
Dependent Claim
32 words
A process according to claim 3 wherein the catalyst stabilizer is benzene and wherein the volume ratio of benzene to normal paraffin in the feedstock is between about 0.002:1 to about 0.02:1.
Claim 7
Dependent Claim
15 words
A process according to claim 4 wherein said normal paraffin feedstock comprises predominantly normal hexane.
Claim 8
Dependent Claim
34 words
A process according to claim 4 wherein said catalyst contains the repeating structure: ##STR11## where n is 0, 1 or 2 and the ratio of x over y varies from 2 to about 50.
References Cited (Backward Citations)
US3766286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |