Robert L Ware

US Patent:

6423879, Jul 23, 2002

Filed:

Nov 15, 1999

Appl. No.:

09/341008

Inventors:

Stephen H. Brown - Princeton NJ
Mark F. Mathias - Pittsford NY
Robert A. Ware - Wyndmoor PA
David H. Olson - Pennington NJ

Assignee:

ExxonMobil Oil Corporation - Fairfax VA

International Classification:

C07C 120

US Classification:

585467, 585469, 502 60, 502 65, 502 71, 502 73, 502 77, 502 85, 502245

Abstract:

There is provided a process for the selective production of para-xylene which comprises reacting toluene with methanol in the presence of a catalyst comprising a porous crystalline material having a Diffusion Parameter for 2,2 dimethylbutane of about 0. 1-15 sec when measured at a temperature of 120Â C. and a 2,2 dimethylbutane pressure of 60 torr (8 kPa). The porous crystalline material is preferably a medium-pore zeolite, particularly ZSM-5, which has been severely steamed at a temperature of at least 950Â C. The porous crystalline material is preferably combined with at least one oxide modifier, preferably including phosphorus, to control reduction of the micropore volume of the material during the steaming step.

US Patent:

6504072, Jan 7, 2003

Filed:

May 8, 2002

Appl. No.:

10/141159

Inventors:

Stephen H. Brown - Princeton NJ
Mark F. Mathias - Pittsford NY
Robert A. Ware - Wyndmoor PA
David H. Olson - Pennington NJ

Assignee:

ExxonMobil Oil Corporation - Fairfax VA

International Classification:

C07C 268

US Classification:

585467, 585464

Abstract:

There is provided a process for the selective production of para-xylene which comprises reacting toluene with methanol in the presence of a catalyst comprising a porous crystalline material having a Diffusion Parameter for 2,2 dimethylbutane of about 0. 1-15 sec when measured at a temperature of 120Â C. and a 2,2 dimethylbutane pressure of 60 torr (8 kPa). The porous crystalline material is preferably a medium-pore zeolite, particularly ZSM-5, which has been severely steamed at a temperature of at least 950Â C. The porous crystalline material is preferably combined with at least one oxide modifier, preferably including phosphorus, to control reduction of the micropore volume of the material during the steaming step.

US Patent:

6506954, Jan 14, 2003

Filed:

Oct 13, 2000

Appl. No.:

09/687749

Inventors:

Stephen H. Brown - Princeton NJ
Larry A. Green - Mickleton NJ
Mark F. Mathias - Pitsford NY
David H. Olson - Pennington NJ
Robert A. Ware - Wyndmoor PA
William A. Weber - Burlington NJ
Reuel Shinnar - Great Neck NY

Assignee:

Exxon Mobil Chemical Patents, Inc. - Houston TX

International Classification:

C07C 120

US Classification:

585640, 585634, 585469

Abstract:

There is provided a process for converting methanol and/or dimethyl ether to a product containing olefin, e. g. , C to C olefins, C aromatics and non-C aromatics which comprises: 1) contacting a feed which contains methanol and/or dimethyl ether with a catalyst comprising a porous crystalline material, said contacting step being conducted in the presence of aromatics comprising C or C aromatic compound produced in said process under conversion conditions including a temperature of 350Â C. to 480Â C. and a methanol partial pressure in excess of 10 psia (70 kPa), said porous crystalline material having a Diffusion Parameter for 2,2-dimethylbutane of about 0. 1 sec to about 20 sec when measured at a temperature of 120Â C. and a 2,2-dimethylbutane pressure of 60 torr (8 kPa), and the aromatics being capable of alkylation by the methanol and/or dimethyl ether under said conversion conditions to provide a stream which contains C to C olefins and C or C aromatic compound; 2) separating said stream to form a substantially C to C olefin product stream and a substantially C or C aromatic compound stream; and 3) recycling at least a portion of said substantially C or C aromatic compound stream to step 1).

US Patent:

6538167, Mar 25, 2003

Filed:

Oct 13, 2000

Appl. No.:

09/687859

Inventors:

Stephen H. Brown - Princeton NJ
William A. Weber - Burlington NJ
Reuel Shinnar - Great Neck NY
Khushrav E. Nariman - Sugar Land TX
Larry A. Green - Mickleton NJ
Mark F. Mathias - Pitsford NY
David H. Olson - Pennington NJ
Robert A. Ware - Wyndmoor PA

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C07C 120

US Classification:

585640, 585639

Abstract:

There is provided a process for converting methanol and/or dimethyl ether to a product containing C to C olefins which comprises the step of contacting a feed which contains methanol and/or dimethyl ether with a catalyst comprising a porous crystalline material. The contacting is conducted in the presence of a cofed aromatic compound under conversion conditions including a temperature of about 350Â C. to about 550Â C. and a methanol and/or dimethyl ether partial pressure less than or equal to 50 psia (345 kPa). The porous crystalline material used in the catalyst has a pore size greater than the critical diameter of the aromatic compound and a Diffusion Parameter for 2,2-dimethylbutane of about 0. 1 to about 26 sec when measured at a temperature of 120Â C. and a 2,2- dimethylbutane pressure of 60 torr (8 kPa), and the aromatic compound is capable of alkylation by the methanol and/or dimethyl ether under said conversion conditions.

US Patent:

49118234, Mar 27, 1990

Filed:

May 12, 1989

Appl. No.:

7/352640

Inventors:

Nai Y. Chen - Titusville NJ
Thomas F. Degnan - Yardley PA
Clinton R. Kennedy - Talleyville DE
Anil B. Ketkar - Cranbury NJ
Leonard R. Koenig - Mercerville NJ
Robert A. Ware - Wyndmoor PA

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

C10G 1105
C10G 5700

US Classification:

208 67

Abstract:

Heavy hydrocarbon oils of high paraffin content are catalytically cracked using zeolite beta. The paraffin content of the oil is at least 20 weight percent or higher. The gasoline cracking products have a high octane rating and the higher boiling products a decreased pour point resulting from the dewaxing activity of the zeolite beta. The use of cracking temperatures above 500. degree. C. , preferably above 550. degree. C. , also improves iso-butene production.

US Patent:

58659862, Feb 2, 1999

Filed:

Nov 3, 1995

Appl. No.:

8/552769

Inventors:

John Scott Buchanan - Trenton NJ
Jane C. Cheng - Clarksburg NJ
David G. Freyman - Kenner LA
Werner Otto Haag - Lawrenceville NJ
Mohsen N. Harandi - Langhorne PA
Dominick N. Mazzone - Wenonah NJ
Roger A. Morrison - Lambertville NJ
Norman J. Rouleau - Yardley PA
Charles M. Sorensen - Wilmington DE
Hye Kyung C. Timken - Woodbury NJ
Robert Adams Ware - Wyndmoor PA

Assignee:

Mobil Oil Corporation - Fairfax VA

International Classification:

C10G 3506
C07C 418

US Classification:

208 65

Abstract:

This is a process for upgrading a petroleum naphtha fraction. The naphtha is subjected to reforming and the reformate is cascaded to a benzene and toluene synthesis zone over a benzene and toluene synthesis catalyst comprising a molecular sieve of low acid activity. The preferred molecular sieve is steamed ZSM-5. The benzene and toluene synthesis zone is operated under conditions compatible with the conditions of the reformer such as pressures of above about 50 psig (446 kPa) and temperatures above about 800. degree. F. (427. degree. C). In one aspect of the invention, the benzene and toluene synthesis catalyst includes a metal hydrogenation component such as cobalt, nickel, platinum or palladium. In one mode of operation, the benzene and toluene synthesis catalyst replaces at least a portion of the catalyst of the reformer. The process produces a product containing an increased proportion of benzene and toluene, and a reduced proportion of C8 aromatics, particularly ethylbenzenes, as compared to the reformate.

US Patent:

60463724, Apr 4, 2000

Filed:

Apr 6, 1998

Appl. No.:

9/055486

Inventors:

Stephen Harold Brown - Princeton NJ
Larry A. Green - Mickleton NJ
Mark Fischer Mathias - Pittsford NY
David H. Olson - Pennington NJ
Robert Adams Ware - Wyndmoor PA
William A. Weber - Marlton NJ

Assignee:

Mobil Oil Corporation - Fairfax VA

International Classification:

C07C 100

US Classification:

585640

Abstract:

There is provided a process for converting methanol and/or dimethyl ether to a product containing C. sub. 2 to C. sub. 4 olefins which comprises the step of contacting a feed which contains methanol and/or dimethyl ether with a catalyst comprising a porous crystalline material, said contacting step being conducted in the presence of an aromatic compound under conversion conditions including a temperature of 350. degree. C. to 480. degree. C. and a methanol partial pressure in excess of 10 psia (70 kPa), said porous crystalline material having a pore size greater than the critical diameter of the aromatic compound and the aromatic compound being capable of alkylation by the methanol and/or dimethyl ether under said conversion conditions.

US Patent:

47402920, Apr 26, 1988

Filed:

Oct 15, 1986

Appl. No.:

6/919621

Inventors:

Nai Y. Chen - Titusville NJ
Anthony Y. Kam - Cherry Hill NJ
Clinton R. Kennedy - Talleyville DE
Anil B. Ketkar - Trenton NJ
Donald M. Nace - Woodbury NJ
Robert A. Ware - Deptford NJ

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

C10G 1102

US Classification:

208120

Abstract:

Heavy oils are simultaneously subjected to cracking and dewaxing in the absence of added hydrogen using a catalyst comprising Zeolite Beta and an X or Y or other faujasite zeolite. The process is able to effect a bulk conversion of the oil, while, at the same time, yielding a higher octane gasoline, increased yields of C. sub. 3 and C. sub. 4 olefins, and a low pour point distillate product.