← Back to Patent Explorer
US4683216A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for activating a composite catalyst useful for hydrocarbon conversion reactions

Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1986-04-04
•
Granted: 1987-07-28
•
Expires: 2006-04-04
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract This invention is a method for producing an acidic catalyst product which may be used for hydrocarbon conversion reactions and a method for reacting hydrocarbons employing such catalyst product. The method comprises the step of contacting the perfluorinated polymersulfonic acid with a mixture of the anion-stabilizing agent and its corresponding anhydride, the stabilizing agent being a fluorinated carboxylic acid. The composite catalyst has a significantly higher Bronsted acidity than the perfluorinated polymersulfonic acid. When the catalyst composite is used to catalyze the alkylation of toluene with 1-hexene, for example, the rate of alkylation is from about 20 to 30 times greater than using the perfluorinated polymersulfonic acid alone.

Inventors

  • 👤 Dan Farcasiu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 02:16
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; B01J31/10; C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; C07C2531/00; C07C2531/02; C07C2531/04; C07C2531/06

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 38 words
A method of producing a catalyst composite of a perfluorinated-polymersulfonic acid and and anion-stabilizing agent comprising contacting the perfluorinted-polymersulfonic acid with a mixture of the stabilizing agent and its anhydride the stabilizing agent being a fluorinated carboxylic acid.
Claim 2
Independent Claim 38 words
A method of producing a catalyst composite of a perfluorinated-polymersulfonic acid and and anion-stabilizing agent comprising contacting the perfluorinted-polymersulfonic acid with a mixture of the stabilizing agent and its anhydride the stabilizing agent being a fluorinated carboxylic acid.
Claim 3
Dependent Claim 23 words
The method of claim 1 wherein the anion-stabilizing agent is selected from the group consisting of C 2 -C 6 fluorinated carboxylic acids.
Claim 4
Dependent Claim 15 words
The method of claim 2 wherein the anion-stabilizing agent has 2 to 4 carbon atoms.
Claim 5
Dependent Claim 11 words
The method of claim 3 wherein the anion-stabilizing agent is polyfluorinated.
Claim 6
Dependent Claim 12 words
The method of claim 1 wherein the anion-stabilizing agent is trifluoroacetic acid.
Claim 7
Dependent Claim 20 words
The method of claim 1 including the additional step of adding at least one other anion-stabilizing solvent to the composite.
Claim 8
Dependent Claim 16 words
The method of claim 6 wherein at least one other anion-stabilizing agent is a fluorinated alcohol.
Claim 9
Dependent Claim 11 words
The method of claim 7 wherein the fluorinated alcohol is hexafluoroisopropanol.
Claim 10
Dependent Claim 36 words
The method of claim 1 wherein said perfluorinated polymersulfonic acid is represented by either of the formulae: ##STR2## wherein the ratio of x over y varies from 2 to 50 and m is 1 or 2.
Claim 11
Dependent Claim 25 words
The method of claim 1 wherein the weight ratio of anion-stabilizing agent to perfluorinated polymersulfonic acid is from 0.1 to 1 to 5.0 to 1.

References Cited (Backward Citations)

US4303551A Cited
US4038213A Cited
US4222952A Cited
US4416801A Cited
US4585750A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-07-27 1991-01-26 1991-07-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-07-27 1995-01-26 1995-07-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-07-27 1999-01-26 1999-07-28 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag