Lawrence D Daniel

US Patent:

47513462, Jun 14, 1988

Filed:

Apr 22, 1986

Appl. No.:

6/855093

Inventors:

Denise M. Barthomeuf - Lyon, FR
Lawrence G. Daniel - Crosby TX

Assignee:

Exxon Research & Engineering Co. - Florham Park NJ

International Classification:

C10G 2503
C07C 713

US Classification:

585828

Abstract:

The invention relates to a process for selectively adsorbing ethylbenzene from a stream containing one or more isomeric xylenes. The ethylbenzene is adsorbed on a gallium Beta zeolite. A desorbent comprising para-dialkylbenzene gives the zeolite good ethylbenzene selectivity over the xylenes.

US Patent:

47437081, May 10, 1988

Filed:

Mar 24, 1986

Appl. No.:

6/843220

Inventors:

Daniel D. Rosenfeld - Houston TX
Lawrence G. Daniel - Crosby TX

Assignee:

Exxon Chemical Patents Inc. - Linden NJ

International Classification:

C07C 713

US Classification:

585828

Abstract:

A process for separating a C. sub. 10 aromatic isomer, particularly paradiethylbenzene, from a feedstream containing a mixture of C. sub. 10 aromatic isomers by contacting the feedstream with a bed of the adsorbent zeolite beta. The adsorbed C. sub. 10 aromatic isomer is removed from the adsorbent by desorption.

US Patent:

6069288, May 30, 2000

Filed:

Mar 18, 1999

Appl. No.:

9/271948

Inventors:

Stephen N. Vaughn - Kingwood TX
Lawrence G. Daniel - Crosby TX

Assignee:

Exxon Chemical Patents Inc. - Houston TX

International Classification:

C07C 700
B01J 800
C01B 300
C01B 312
C01B 316

US Classification:

585800

Abstract:

A process for the separation and removal, of hydrogen, alone or together with carbon monoxide, if present, from a mixture of these gases with reactive unsaturated hydrocarbons, by contacting the mixture with oxygen over a catalyst at conditions sufficient to oxidize the hydrogen to form water while suppressing reaction of the reactive, unsaturated hydrocarbons. The catalyst contains at least one metal or metal oxide from Groups IB, IIB, IIIB, IVB, VB, VIB, VIIB, and VIII of the Periodic Table, and the temperature of the reaction may range from about 40. degree. C. to about 300. degree. C. , the pressure of the reaction ranges from about 14. 7 psig to 1,000 psig, and the flow rate of the entering feed ranges from about 1 GHSV to about 50,000 GHSV. Oxygen amounts less than the stoichiometric amount required to react with the hydrogen, and optionally any carbon monoxide, are used. In a second stage, any remaining carbon monoxide is reacted with water in a water gas-shift reaction to give carbon dioxide and hydrogen, and any small remaining hydrogen is reacted with a small portion of reactive unsaturated hydrocarbon present.

US Patent:

59070765, May 25, 1999

Filed:

Jun 23, 1997

Appl. No.:

8/880611

Inventors:

Stephen Neil Vaughn - Kingwood TX
Lawrence Gilbert Daniel - Crosby TX

Assignee:

Exxon Chemical Patents Inc. - Houston TX

International Classification:

C07C 700

US Classification:

585800

Abstract:

A process is disclosed for the separation and removal of hydrogen, alone or together with carbon monoxide, from a mixture of these gases with olefinic hydrocarbons by contacting the mixture with oxygen over a catalyst at conditions sufficient to oxidize the hydrogen to form water while suppressing reaction of the reactive, unsaturated hydrocarbons. The catalyst contains at least one metal or metal oxide from Groups Ib, IIb, IIIa, IVa and Va of the Periodic Table, and the temperature of the reaction may range from about 40. degree. C. to 300. degree. C. and a pressure of about 14. 7 psig to 1,000 psig, and the flow rate of the entering feed ranges from about 1 GHSV to about 50,000 GHSV. The process can be conducted using one, two or three reaction zones.