US4329533A
Expired / Lapsed
US
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Shape selective reactions with zeolite catalysts modified with group IA metals
Assignee: Mobil Oil AS
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Filing: 1980-05-05
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Granted: 1982-05-11
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Expires: 2000-05-05
Abstract
Abstract A process for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a particular type of zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified by treatment with metal compounds of elements from Group IA of the Periodic Chart, and optionally phosphorus, to deposit a minor proportion of such elements on the zeolite.
Inventors
- 👤 Chin-Chiun Chu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:11
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/12; C07C6/126; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/40; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/86; C07C2/862; C07C2/864; C07C6/123; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; B01J29/65; B01J29/70; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/40; C07C2529/65; C07C2529/70; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y02P30/00; Y02P30/20; Y02P30/40
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
131 words
A process for conversion of organic compounds, said process comprising contacting said organic compounds with a crystalline zeolite catalyst at a temperature of between about 250° C. and about 750° C. and a pressure within the approximate range of 10 5 N/m 2 to 10 7 N/m 2 , said zeolite being characterized by a silica to alumina mole ratio of at least 12 and a constraint index within the approximate range of 1 to 12, said zeolite having undergone prior modification by initial treatment to replace the original cations therein with hydrogen or a hydrogen precursor and by subsequent treatment with one or more compounds containing metal elements of Group IA to deposit on said zeolite at least 0.25 weight percent of such element in the form of its oxide.
Claim 2
Dependent Claim
131 words
A process for conversion of organic compounds, said process comprising contacting said organic compounds with a crystalline zeolite catalyst at a temperature of between about 250° C. and about 750° C. and a pressure within the approximate range of 10 5 N/m 2 to 10 7 N/m 2 , said zeolite being characterized by a silica to alumina mole ratio of at least 12 and a constraint index within the approximate range of 1 to 12, said zeolite having undergone prior modification by initial treatment to replace the original cations therein with hydrogen or a hydrogen precursor and by subsequent treatment with one or more compounds containing metal elements of Group IA to deposit on said zeolite at least 0.25 weight percent of such element in the form of its oxide.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein said temperature is between 300° C. and 650° C.
Claim 4
Dependent Claim
33 words
The process of claim 1 wherein said element of Group IA is chosen from the group consisting of lithium, sodium, potassium, rubidium and cesium and wherein said zeolite is a highly siliceous zeolite.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein said element is lithium.
Claim 6
Dependent Claim
20 words
The process of claim 4 wherein said lithium comprises between 1 and 15 weight percent of the modified zeolite catalyst.
Claim 7
Dependent Claim
10 words
The process of claim 1 wherein said element is sodium.
Claim 8
Dependent Claim
20 words
The process of claim 6 wherein said sodium comprises between 1 and 15 weight percent of the modified zeolite catalyst.
Claim 9
Dependent Claim
10 words
The process of claim 1 wherein said element is potassium.
Claim 10
Dependent Claim
20 words
The process of claim 8 wherein said potassium comprises between 1 and 25 weight percent of the modified zeolite catalyst.
Claim 11
Dependent Claim
10 words
The process of claim 1 wherein said element is cesium.
Claim 12
Dependent Claim
20 words
The process of claim 10 wherein said cesium comprises between 1 and 30 weight percent of the modified zeolite catalyst.
Claim 13
Dependent Claim
35 words
The process of claim 1 wherein said zeolite is also modified by treatment thereof with a compound of the element phosphorus to deposit thereon at least 0.25 weight percent of phosphorus in its oxide forms.
Claim 14
Dependent Claim
19 words
The process of claim 1 wherein said zeolite has deposited thereon both phosphorus and lithium in their oxide forms.
Claim 15
Dependent Claim
19 words
The process of claim 1 wherein said zeolite has deposited thereon both phosphorus and sodium in their oxide forms.
Claim 16
Dependent Claim
19 words
The process of claim 1 wherein said zeolite has deposited thereon both phosphorus and potassium in their oxide forms.
Claim 17
Dependent Claim
19 words
The process of claim 1 wherein said zeolite has deposited thereon both phosphorus and cesium in their oxide forms.
Claim 18
Dependent Claim
14 words
The process of claim 1 wherein said zeolite is admixed with a binder therefor.
Claim 19
Dependent Claim
54 words
The process of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 or 17 wherein said conversion comprises the alkylation of an aromatic compound with an alkylating agent to produce the dialkylbenzene compounds wherein the 1,4-dialkylbenzene isomer is present in excess of its normal equilibrium concentration.
Claim 20
Dependent Claim
23 words
The process of claim 18 wherein said zeolite is chosen from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48.
Claim 21
Dependent Claim
10 words
The process of claim 18 wherein said zeolite is ZSM-5.
Claim 22
Dependent Claim
10 words
The process of claim 18 wherein said zeolite is ZSM-11.
Claim 23
Dependent Claim
48 words
The process of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, or 17 wherein said conversion comprises the transalkylation of aromatic compounds to produce dialkylbenzene compounds wherein the 1,4-dialkylbenzene isomer is present in excess of its normal equilibrium concentration.
Claim 24
Dependent Claim
23 words
The process of claim 22 wherein said zeolite is chosen from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48.
Claim 25
Dependent Claim
10 words
The process of claim 22 wherein said zeolite is ZSM-5.
Claim 26
Dependent Claim
10 words
The process of claim 22 wherein said zeolite is ZSM-11.
Claim 27
Dependent Claim
49 words
The process of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 or 17 wherein said conversion comprises disproportionation of alkylbenzenes to produce benzene and dialkylbenzenes in which the proportion of 1,4-dialkylbenzene isomer is in excess of its normal equilibrium concentration.
Claim 28
Dependent Claim
23 words
The process of claim 26 wherein said zeolite is chosen from the group consisting of ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 and ZSM-48.
Claim 29
Dependent Claim
10 words
The process of claim 26 wherein said zeolite is ZSM-5.
Claim 30
Dependent Claim
10 words
The process of claim 26 wherein said zeolite is ZSM-11.
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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) | 1985-05-10 | 1985-11-09 | 1986-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-10 | 1989-11-09 | 1990-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-10 | 1993-11-09 | 1994-05-11 | $7700.00 | Window Closed / Lapsed |