US4300012A
Expired / Lapsed
US
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Process for transalkylation of alkylaromatic hydrocarbons
Assignee: Honeywell UOP LLC
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Filing: 1980-11-12
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Granted: 1981-11-10
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Expires: 2000-11-12
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
2026-11-02 22:49
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/123
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
A process for the transalkylation of alkylaromatic hydrocarbons at transalkylation conditions wherein said alkylaromatic hydrocarbons are contacted with 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 admixto 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
Dependent Claim
83 words
A process for the transalkylation of alkylaromatic hydrocarbons at transalkylation conditions wherein said alkylaromatic hydrocarbons are contacted with 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 admixto 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
50 words
The process of claim 1 wherein said transalkylation conditions include a temperature of from about 200° C. to about 480° C., a pressure from about atmospheric to about 1500 psig, and a hydrogen circulation rate to provide from about 1 to about 10 moles of hydrogen per mole of hydrocarbon.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein said alkylaromatic hydrocarbon is toluene.
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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |