Patent US4447316A successfully refreshed from Google Patents.
US4447316A
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Composition and a method for its use in dehydrocyclization of alkanes
Assignee: Chevron USA Inc
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Filing: 1982-02-01
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Granted: 1984-05-08
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Expires: 2002-02-01
Abstract
Abstract A new catalyst is disclosed which is useful for dehydrocyclizing alkanes. This catalyst contains a type L zeolite, a Group VIII metal, and an alkaline earth metal. This catalyst has been reduced in a hydrogen atmosphere at a temperature of from 480° C. to 620° C.
Inventors
- 👤 Waldeen C. Buss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:45
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/60; B01J29/605; B01J29/61; B01J29/62; C07; C07C; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/18; C07C5/00; C07C5/32; C07C5/373; C07C5/387; C07C5/393; C07C5/41; C07C5/415; C07C5/417; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; C07C2523/00; C07C2523/02; C07C2523/38; C07C2523/40; C07C2523/42; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/60; C07C2529/61; C07C2529/62; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
60 words
A method of reforming hydrocarbons comprising contacting said hydrocarbons with a catalyst comprising: (a) a type L zeolite; (b) at least one Group VIII metal; and (c) an alkaline earth metal selected from the group consisting of barium, strontium and calcium, wherein said catalyst is reduced in a hydrogen atmosphere at a temperature of from 480° C. to 620° C.
Claim 2
Independent Claim
60 words
A method of reforming hydrocarbons comprising contacting said hydrocarbons with a catalyst comprising: (a) a type L zeolite; (b) at least one Group VIII metal; and (c) an alkaline earth metal selected from the group consisting of barium, strontium and calcium, wherein said catalyst is reduced in a hydrogen atmosphere at a temperature of from 480° C. to 620° C.
Claim 3
Dependent Claim
28 words
A method of reforming hydrocarbons according to claim 1 wherein said catalyst is reduced in a hydrogen atmosphere at a temperature of from 530° C. to 620° C.
Claim 4
Dependent Claim
24 words
A method of reforming hydrocarbons according to claim 2 wherein said alkaline earth metal is barium and wherein said Group VIII metal is platinum.
Claim 5
Dependent Claim
27 words
A method of reforming hydrocarbons according to claim 3 wherein said catalyst has from 0.1% to 5% by weight platinum and 0.1% to 35% by weight barium.
Claim 6
Dependent Claim
50 words
A method of reforming hydrocarbons according to claim 4 wherein said contacting occurs at a temperature of from 400° C. to 600° C.; an LHSV of from 0.3 to 5; a pressure of from 1 atmosphere to 500 psig; and an H 2 /HC ratio of from 1:1 to 10:1.
Claim 7
Dependent Claim
41 words
A method of reforming hydrocarbons according to claim 5 wherein said contacting occurs at a temperature of from 450° C. to 550° C.; a pressure of 50 to 200 psig; and an H 2 /HC ratio of from 2:1 to 6:1.
Claim 8
Independent Claim
60 words
A method of dehydrocyclizing alkanes comprising contacting said alkanes with a catalyst comprising: (a) a type L zeolite; (b) at least one Group VIII metal; and (c) an alkaline earth metal selected from the group consisting of barium, strontium and calcium, wherein said catalyst is reduced in a hydrogen atmosphere at a temperature of from 480° C. to 620° C.
Claim 9
Independent Claim
60 words
A method of dehydrocyclizing alkanes comprising contacting said alkanes with a catalyst comprising: (a) a type L zeolite; (b) at least one Group VIII metal; and (c) an alkaline earth metal selected from the group consisting of barium, strontium and calcium, wherein said catalyst is reduced in a hydrogen atmosphere at a temperature of from 480° C. to 620° C.
Claim 10
Dependent Claim
28 words
A method of dehydrocyclizing alkanes according to claim 7 wherein said catalyst is reduced in a hydrogen atmosphere at a temperature of from 530° C. to 620° C.
Claim 11
Dependent Claim
24 words
A method of dehydrocyclizing alkanes according to claim 8 wherein said alkaline earth metal is barium and wherein said Group VIII metal is platinum.
Claim 12
Dependent Claim
27 words
A method of dehydrocyclizing alkanes according to claim 9 wherein said catalyst has from 0.1% to 5% by weight platinum and 0.1% to 35% by weight barium.
Claim 13
Dependent Claim
50 words
A method of dehydrocyclizing alkanes according to claim 10 wherein said contacting occurs at a temperature of from 400° C. to 600° C.; an LHSV of from 0.3 to 5; a pressure of from 1 atmosphere to 500 psig; and an H 2 /HC ratio of from 1:1 to 10:1.
Claim 14
Dependent Claim
41 words
A method of dehydrocyclizing alkanes according to claim 11 wherein said contacting occurs at a temperature of from 450° C. to 550° C.; a pressure of 50 to 200 psig; and an H 2 /HC ratio of from 2:1 to 6:1.
Claim 15
Independent Claim
44 words
A method of reforming alkylcyclopentanes to produce aromatics comprising contacting said alkylcyclopentanes with a catalyst comprising: (a) a type L zeolite; (b) at least one Group VIII metal; and (c) an alkaline earth metal selected from the group consisting of barium, strontium and calcium.
Claim 16
Independent Claim
44 words
A method of reforming alkylcyclopentanes to produce aromatics comprising contacting said alkylcyclopentanes with a catalyst comprising: (a) a type L zeolite; (b) at least one Group VIII metal; and (c) an alkaline earth metal selected from the group consisting of barium, strontium and calcium.
Claim 17
Dependent Claim
31 words
A method of reforming alkylcyclopentanes to produce aromatics according to claim 13 wherein said catalyst is reduced in a hydrogen atmosphere at a temperature of from 530° C. to 620° C.
Claim 18
Dependent Claim
24 words
A method of reforming alkylcyclopentanes according to claim 14 wherein said alkaline earth metal is barium and wherein said Group VIII metal is platinum.
Claim 19
Dependent Claim
27 words
A method of reforming alkylcyclopentanes according to claim 15 wherein said catalyst has from 0.1% to 5% by weight platinum and 0.1% to 35% by weight barium.
Claim 20
Dependent Claim
50 words
A method of reforming alkylcyclopentanes according to claim 16 wherein said contacting occurs at a temperature of from 400° C. to 600° C.; an LHSV of from 0.3 to 5; a pressure of from 1 atmosphere to 500 psig; and an H 2 /HC ratio of from 1:1 to 10:1.
Claim 21
Dependent Claim
41 words
A method of reforming alkylcyclopentanes according to claim 17 wherein said contacting occurs at a temperature of from 450° C. to 550° C.; a pressure of 50 to 200 psig; and an H 2 /HC ratio of from 2:1 to 6:1.
Claim 22
Independent Claim
103 words
A method of dehydrocyclizing alkanes comprising contacting said alkanes with a catalyst at a temperature of from 400° C. to 600° C.; a LHSV of from 0.3 to 5; a pressure of from 1 atmosphere to 500 psig; and an H 2 /HC ratio of from 1:1 to 10:1; wherein said catalyst consists essentially of a type L zeolite, an inorganic oxide binder, platinum, and barium; wherein said catalyst is reduced in a hydrogen atmosphere at a temperature of from 480° C. to 620° C.; wherein said catalyst has from 0.1% to 5% by weight platinum and 0.1% to 35% by weight barium.
Claim 23
Independent Claim
103 words
A method of dehydrocyclizing alkanes comprising contacting said alkanes with a catalyst at a temperature of from 400° C. to 600° C.; a LHSV of from 0.3 to 5; a pressure of from 1 atmosphere to 500 psig; and an H 2 /HC ratio of from 1:1 to 10:1; wherein said catalyst consists essentially of a type L zeolite, an inorganic oxide binder, platinum, and barium; wherein said catalyst is reduced in a hydrogen atmosphere at a temperature of from 480° C. to 620° C.; wherein said catalyst has from 0.1% to 5% by weight platinum and 0.1% to 35% by weight barium.
Claim 24
Dependent Claim
28 words
A method of dehydrocyclizing alkanes according to claim 19 wherein said catalyst is reduced in a hydrogen atmosphere at a temperature of from 530° C. to 620° C.
Claim 25
Dependent Claim
41 words
A method of dehydrocyclizing alkanes according to claim 20 wherein said contacting occurs at a temperature of from 450° C. to 550° C.; a pressure of 50 to 200 psig; and an H 2 /HC ratio of from 2:1 to 6:1.
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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) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |