US4085156A
Expired / Lapsed
US
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Conversion of hydrocarbons
Assignee: Mobil Oil AS
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Filing: 1971-07-23
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Granted: 1978-04-18
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Expires: 1991-07-23
Abstract
Abstract Crystalline aluminosilicate zeolites are used as catalysts for various hydrocarbon conversion processes and are particularly useful for conversion of paraffins in the presence of an alkylatable aromatic hydrocarbon such as benzene.
Inventors
- 👤 Vincent J. Frilette
- 👤 Mae K. Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:54
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; C07; C07C; C07C15/00; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/12; C07C2/54; C07C2/64; C07C2/66; C07C4/00; C07C4/02; C07C4/06; C07C5/00; C07C5/22; C07C5/2206; C07C5/222; C07C5/27; C07C5/2702; C07C5/2708; C07C5/29; C07C6/00; C07C6/08; C07C6/12; C07C6/123; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/18; C07C2601/00; C07C2601/06; C07C2601/08
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
54 words
In a method wherein a charge stock comprising paraffins and an alkylatable aromatic hydrocarbon are subjected to cracking conditions carried out at temperatures between about 500° and 1000° F., the improvement of carrying out said cracking in the presence of a crystalline aluminosilicate catalyst having a silica to alumina ratio of at least 10.
Claim 2
Dependent Claim
54 words
In a method wherein a charge stock comprising paraffins and an alkylatable aromatic hydrocarbon are subjected to cracking conditions carried out at temperatures between about 500° and 1000° F., the improvement of carrying out said cracking in the presence of a crystalline aluminosilicate catalyst having a silica to alumina ratio of at least 10.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein the charge stock is a reformate composed of substantially aromatic and paraffinic constituents.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein the aluminosilicate has been base exchanged with ammonium or hydrogen ions.
Claim 5
Dependent Claim
17 words
The method of claim 2 wherein the aluminosilicate has been base exchanged with ammonium or hydrogen ions.
Claim 6
Dependent Claim
72 words
The synthesis of alkyl benzenes product from a feedstock of benzene and having a lower degree of ring alkylation than said product, which comprises contacting said hydrocarbon with a catalyst comprising a zeolite composition of alumina and silica having a relatively uniform pore diameter, in the absence of any hydrogenating catalytic component, and at reaction conditions effective to form said alkyl benzenes having a higher degree of ring alkylation than said feedstock.
Claim 7
Dependent Claim
72 words
The synthesis of alkyl benzenes product from a feedstock of benzene and having a lower degree of ring alkylation than said product, which comprises contacting said hydrocarbon with a catalyst comprising a zeolite composition of alumina and silica having a relatively uniform pore diameter, in the absence of any hydrogenating catalytic component, and at reaction conditions effective to form said alkyl benzenes having a higher degree of ring alkylation than said feedstock.
Claim 8
Dependent Claim
47 words
The method of claim 5 wherein said catalyst is pretreated prior to said contacting with said hydrocarbon by maintaining said catalyst at a temperature of 500° to 1,500° F for a period of from one to 48 hours while in contact with hydrogen or an inert gas.
Claim 9
Independent Claim
62 words
The method for increasing the content of alkylbenzenes and decreasing the content of benzene in a hydrocarbon stream without substantially decreasing its boiling point which comprises contacting said stream with a catalyst comprising a zeolitic, metallo aluminosilicate having a relatively uniform pore diameter, in the absence of any hydrogenating catalytic component, and at reaction conditions effective to convert said benzene to alkylbenzenes.
Claim 10
Independent Claim
62 words
The method for increasing the content of alkylbenzenes and decreasing the content of benzene in a hydrocarbon stream without substantially decreasing its boiling point which comprises contacting said stream with a catalyst comprising a zeolitic, metallo aluminosilicate having a relatively uniform pore diameter, in the absence of any hydrogenating catalytic component, and at reaction conditions effective to convert said benzene to alkylbenzenes.
Claim 11
Independent Claim
69 words
The method for increasing the degree of alkylation of an aromatic hydrocarbon without substantially decreasing its boiling point which comprises contacting said hydrocarbon with a catalyst comprising a zeolitic, metallo aluminosilicate having a relatively uniform pore diameter, in the absence of any hydrogenating catalytic component, and at reaction conditions effective to crack the nucleus of some of the aromatics into alkyl fragments and alkylate remaining aromatics with said fragments.
Claim 12
Independent Claim
69 words
The method for increasing the degree of alkylation of an aromatic hydrocarbon without substantially decreasing its boiling point which comprises contacting said hydrocarbon with a catalyst comprising a zeolitic, metallo aluminosilicate having a relatively uniform pore diameter, in the absence of any hydrogenating catalytic component, and at reaction conditions effective to crack the nucleus of some of the aromatics into alkyl fragments and alkylate remaining aromatics with said fragments.
Claim 13
Dependent Claim
47 words
The method of claim 8 wherein said catalyst is pretreated prior to said contacting with said hydrocarbon by maintaining said catalyst at a temperature of 500° to 1,500° F. for a period of from one to 48 hours while in contact with hydrogen or an inert gas.
Claim 14
Dependent Claim
24 words
The method of claim 5 wherein said catalyst, prior to contacting said hydrocarbon, is exposed to temperatures of 500° F to about 1500° F.
Claim 15
Dependent Claim
24 words
The method of claim 8 wherein said catalyst, prior to contacting said hydrocarbon, is exposed to temperatures of 500° F to about 1500° F.
Claim 16
Dependent Claim
58 words
In a cyclic method wherein a catalyst is alternately subjected to hydrocarbon cracking of a charge-stock comprising paraffins and aromatic hydrocarbons at cracking temperatures of at least 180° C and to catalyst regeneration, the improvement of carrying out said cracking in the presence of a crystalline aluminosilicate catalyst having a silica to alumina ratio of at least 10.
Claim 17
Dependent Claim
58 words
In a cyclic method wherein a catalyst is alternately subjected to hydrocarbon cracking of a charge-stock comprising paraffins and aromatic hydrocarbons at cracking temperatures of at least 180° C and to catalyst regeneration, the improvement of carrying out said cracking in the presence of a crystalline aluminosilicate catalyst having a silica to alumina ratio of at least 10.
Claim 18
Dependent Claim
10 words
The method of claim 12 wherein said aluminosilicate is mordenite.
Claim 19
Dependent Claim
13 words
The method of claim 13 wherein said aluminosilicate catalyst contains a multivalent metal.
Claim 20
Dependent Claim
13 words
The method of claim 14 wherein said metal is an active trivalent metal.
Claim 21
Dependent Claim
12 words
The method of claim 14 wherein said metal is lanthanum and/or cerium.
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) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |