Patent US4264473A successfully refreshed from Google Patents.
US4264473A
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Method of catalyst manufacture, and catalyst made by said method
Assignee: Honeywell UOP LLC
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Filing: 1980-01-17
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Granted: 1981-04-28
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Expires: 2000-01-17
Abstract
Abstract A catalytic composite of improved selectivity and a method of manufacture is disclosed. The catalytic composite is particularly effective with respect to the transalkylation of toluene. The catalytic composite is characterized by a method of preparation which comprises subjecting a mordenite alumina to an aqueous ammoniacal treatment at a pH of at least about 9.5; calcining the resulting mordenite to an aqueous solution containing a boron salt; and calcining the resulting mordenite alumina to provide said catalytic composite.
Inventors
- 👤 Hosheng Tu
- 👤 Stephen W. Sohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:48
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/123; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
74 words
A method of manufacture providing a catalytic composite of improved selectivity which comprises: (a) subjecting a mordenite alumina admixture to an aqueous ammoniacal treatment at a pH of at least about 9.5; (b) calcining the resulting mordenite alumina admixture from step (a); (c) subjecting the resulting calcined mordenite alumina admixture to an aqueous solution containing a boron salt; and (d) calcining the resulting mordenite alumina admixture from step (c) to provide said catalytic composite.
Claim 2
Independent Claim
74 words
A method of manufacture providing a catalytic composite of improved selectivity which comprises: (a) subjecting a mordenite alumina admixture to an aqueous ammoniacal treatment at a pH of at least about 9.5; (b) calcining the resulting mordenite alumina admixture from step (a); (c) subjecting the resulting calcined mordenite alumina admixture to an aqueous solution containing a boron salt; and (d) calcining the resulting mordenite alumina admixture from step (c) to provide said catalytic composite.
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein the calcining step (b) is performed at a temperature of from about 700° F. to about 1300° F.
Claim 4
Dependent Claim
24 words
The method of claim 1 wherein the calcining step (d) is performed at a temperature of from about 700° F. to about 1300° F.
Claim 5
Dependent Claim
66 words
A catalytic composite prepared by: (a) subjecting a mordenite alumina admixture to an aqueous ammoniacal treatment at a pH of at least about 9.5; (b) calcining the resulting mordenite alumina admixture from step (a); (c) subjecting the resulting calcined mordenite alumina admixture to an aqueous solution containing a boron salt; and (d) calcining the resulting mordenite alumina admixture from step (c) to provide said catalytic composite.
Claim 6
Dependent Claim
66 words
A catalytic composite prepared by: (a) subjecting a mordenite alumina admixture to an aqueous ammoniacal treatment at a pH of at least about 9.5; (b) calcining the resulting mordenite alumina admixture from step (a); (c) subjecting the resulting calcined mordenite alumina admixture to an aqueous solution containing a boron salt; and (d) calcining the resulting mordenite alumina admixture from step (c) to provide said catalytic composite.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |