US4867864A
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US
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Dehydrogenation, dehydrocyclization and reforming catalyst
Assignee: ExxonMobil Oil Corp
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Filing: 1988-12-13
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Granted: 1989-09-19
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Expires: 2008-12-13
Abstract
Abstract The invention relates to catalytic treatment of paraffin feeds to alter the hydrogen content of the feed, for example, by producing effluents the aromatic content of which exceeds that of the feed in which the catalyst is a non-acidic composition containing a strong dehydrogenation/hydrogenation metal and zeolite beta in non-acidic form.
Inventors
- 👤 Ralph M. Dessau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:24
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
70 words
A process for producing aromatic compounds and for reducing the C 6 -C 12 paraffin content of a C 6 -C 12 paraffin containing feed comprising contacting a C 6 -C 12 paraffin containing feedstock, under reforming conditions, in the presence of hydrogen, with a non-acidic catalyst composition comprising 0.01 to 30 weight percent of a reforming dehydrogenation/hydrogenation metal and zeolite beta in a non-acidic form; and recovering aromatic products.
Claim 2
Dependent Claim
70 words
A process for producing aromatic compounds and for reducing the C 6 -C 12 paraffin content of a C 6 -C 12 paraffin containing feed comprising contacting a C 6 -C 12 paraffin containing feedstock, under reforming conditions, in the presence of hydrogen, with a non-acidic catalyst composition comprising 0.01 to 30 weight percent of a reforming dehydrogenation/hydrogenation metal and zeolite beta in a non-acidic form; and recovering aromatic products.
Claim 3
Dependent Claim
13 words
The process of claim 1, wherein said metal is a Group VIII metal.
Claim 4
Dependent Claim
10 words
The process of claim 1, wherein said metal is platinum.
Claim 5
Dependent Claim
18 words
The process of claim 1, wherein platinum is incorporated with the zeolite by ion exchange, impregnation, or admixture.
Claim 6
Dependent Claim
25 words
The process of claim 4, wherein platinum incorporation into zeolite beta precedes the conversion of zeolite beta from its acid form to its non-acidic form.
Claim 7
Dependent Claim
15 words
The process of claim 1, wherein the reforming temperature ranges from 750° to 1200° F.
Claim 8
Dependent Claim
16 words
The process of claim 1, wherein the hydrogen:hydrocarbon feed mole ratio ranges from 1 to 20.
Claim 9
Dependent Claim
19 words
The process of claim 1, wherein the reforming conditions include a liquid hourly space velocity of 0.1 to 20.
Claim 10
Dependent Claim
25 words
The process of claim 6, wherein said hydrogen is present in an amount expressed as H 2 /feed mole ratio ranging from 1 to 20.
Claim 11
Dependent Claim
17 words
The process of claim 1, wherein the reforming conditions include a pressure of 0 to 100 psig.
Claim 12
Dependent Claim
18 words
The process of claim 9, wherein the reforming conditions include a pressure of about 0 to 100 psig.
Claim 13
Dependent Claim
70 words
The process of claim 5, wherein conversion of zeolite beta from its acid form to its non-acidic form comprises treating zeolite beta in its acid form with an aqueous solution of a water soluble source of a metal selected from the group consisting of Group IA and Group IIA of the Periodic Table of Elements until the pH of the mixture resulting from said treatment is at least about 8.
Claim 14
Dependent Claim
18 words
The process of claim 12, wherein the reforming conditions include a pressure of about 0 to 100 psig.
Claim 15
Dependent Claim
24 words
The process of claim 13, wherein said hydrogen is present in amount expressed as H 2 /feed mole ratio ranging from 1 to 20.
Claim 16
Dependent Claim
10 words
The process of claim 12 wherein said metal is cesium.
Claim 17
Dependent Claim
56 words
The process of claim 1, wherein the reforming dehydrogenation/hydrogenation metal is incorporated into zeolite beta, followed by calcination, and then the calcined zeolite beta containing said reforming dehydrogen/hydrogenation metal is treated with a water soluble source of a metal selected from the group consisting of Group IA and Group IIA of the Periodic Table of Elements.
Claim 18
Dependent Claim
12 words
The process of claim 16, wherein said Group IA metal is cesium.
Claim 19
Dependent Claim
19 words
The process of claim 1, wherein said xeolite beta is characterized by a silica:alumina ratio of 10 to 200.
Claim 20
Dependent Claim
18 words
The process of claim 1, wherein said zeolite beta is characterized by a silica:alumina ratio greater than 200.
Claim 21
Dependent Claim
13 words
The process of claim 1, wherein said zeolite beta is dealuminized zeolite beta.
Claim 22
Dependent Claim
20 words
The process of claim 1, wherein said zeolite beta contains boron and wherein said boron ranges from 0.1 to 5%.
Claim 23
Dependent Claim
19 words
The process of claim 1 wherein said feed contains sulfur in an amount ranging from 1 to 50 ppm.
Claim 24
Dependent Claim
13 words
The process of claim 1, wherein said non-acidic catalyst composition is base exchanged.
Claim 25
Dependent Claim
58 words
A process for reforming a paraffin rich naphtha feed, comprising contacting said feed, under reforming conditions, in the presence of hydrogen, with a base exchanged catalyst composition comprising 0.1 to 30 weight percent of a reforming hydrogenation/dehydrogenation metal and zeolite beta in a non-acidic form; and recovering an effluent of aromatic content greater than that of the feed.
Claim 26
Dependent Claim
58 words
A process for reforming a paraffin rich naphtha feed, comprising contacting said feed, under reforming conditions, in the presence of hydrogen, with a base exchanged catalyst composition comprising 0.1 to 30 weight percent of a reforming hydrogenation/dehydrogenation metal and zeolite beta in a non-acidic form; and recovering an effluent of aromatic content greater than that of the feed.
Claim 27
Dependent Claim
13 words
The process of claim 24, wherein said metal is a Group VIII metal.
Claim 28
Dependent Claim
10 words
The process of claim 24, wherein said metal is platinum.
Claim 29
Dependent Claim
18 words
The process of claim 24, wherein platinum is incorporated with the zeolite by ion exchange, impregnation, or admixture.
Claim 30
Dependent Claim
25 words
The process of claim 24, wherein platinum incorporation into zeolite beta precedes the conversion of zeolite beta from its acid form to its non-acidic form.
Claim 31
Dependent Claim
20 words
The process of claim 4, which further includes the step of calcination after said incorporation and prior to said conversion.
Claim 32
Dependent Claim
15 words
The process of claim 24, wherein the reforming temperature ranges from 750° to 1200° F.
Claim 33
Dependent Claim
16 words
The process of claim 24, wherein the hydrogen:hydrocarbon feed mole ratio ranges from 1 to 20.
Claim 34
Dependent Claim
19 words
The process of claim 24, wherein the reforming conditions include a liquid hourly space velocity of 0.1 to 20.
Claim 35
Dependent Claim
25 words
The process of claim 24, wherein said hydrogen is present in an amount expressed as H 2 /feed mole ratio ranging from 1 to 20.
Claim 36
Dependent Claim
17 words
The process of claim 24, wherein the reforming conditions include a pressure of 0 to 100 psig.
Claim 37
Dependent Claim
70 words
The process of claim 24, wherein conversion of zeolite beta from its acid form to its non-acidic form comprises treating zeolite beta in its acid form with an aqueous solution of a water soluble source of a metal selected from the group consisting of Group IA and Group IIA of the Periodic Table of Elements until the pH of the mixture resulting from said treatment is at least about 8.
Claim 38
Dependent Claim
12 words
The process of claim 35, wherein said Group IA element is cesium.
Claim 39
Dependent Claim
24 words
The process of claim 34, wherein said hydrogen is present in amount expressed as H 2 /feed mole ratio ranging from 1 to 20.
Claim 40
Dependent Claim
68 words
The process of claim 24, wherein the hydrocarbon feed is hydrotreated, prior to said contacting under reforming conditions, by subjecting the naphtha to a hydrotreating catalyst bed at a temperature of 550° F. to 850° F. at a overall space velocity of between 0.1 and about 10, in the presence of hydrogen in the hydrotreating zone, wherein the hydrogen/feed mole ratio is between 2.4 and about 24 moles.
References Cited (Backward Citations)
US4808295A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |