David O Marler

US Patent:

7419928, Sep 2, 2008

Filed:

Apr 6, 2004

Appl. No.:

10/819378

Inventors:

Andrzej M. Malek - Doylestown PA, US
Stephen C. Leviness - Tulsa OK, US
Horacio M. Trevino - Annandale NJ, US
Weldon K. Bell - Ridgeway IA, US
David O. Marler - Morris Plains NJ, US

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

B01J 23/00
B01J 21/00
B01J 20/00
B01J 27/00
B01J 29/00

US Classification:

502 20, 502305, 502309, 502314, 502315, 502321, 502326, 502329, 502337, 502339, 502439, 502324

Abstract:

A process for enhancing the activity of a catalyst metal particulate for hydrogenation reactions comprising calcining the particulate in an oxidant-containing atmosphere to partially oxidize it thereby forming a porous layer of oxides thereon, treating with an solution capable of oxidizing the calcined metal particulate and comprising a compound of a hydrogenation catalyst metal to where said metal particulate has absorbed a volume of solution equal to at least about 10% of its calculated pore volume and activating it by treatment with a hydrogen-containing gas at elevated temperatures thereby forming a dispersed active metal catalyst. Preferably, the treated particulate is calcined a second time under the same conditions as the first before final activation with a hydrogen-containing gas. The metal particulate is preferably sized after each calcination and any agglomerates larger than 250 microns are comminuted to a desired size.

US Patent:

7816573, Oct 19, 2010

Filed:

Jan 26, 2007

Appl. No.:

11/698533

Inventors:

Wenyih Frank Lai - Bridgewater NJ, US
Robert Ellis Kay - Easton PA, US
Christine N. Elia - Bridgewater NJ, US
Frederick Y. Lo - Middlesex NJ, US
David O. Marler - Morris Plains NJ, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C07C 2/66
B01J 29/04
B01J 29/80
C01B 39/00
C01B 39/02

US Classification:

585467, 502 60, 502 67, 423700, 423702, 423706, 423709, 208135

Abstract:

The invention relates to a process for converting hydrocarbons with a catalyst comprising a crystalline molecular sieve composition which is obtainable by crystallizing a pre-formed extrudate mixture in a reactor and, during crystallization, removing excess alkali metal hydroxide from the pre-formed extrudate. The pre-formed extrudate mixture comprises at least one source of ions of tetravalent element Y, at least one source of alkali metal hydroxide, water, optionally at least one seed crystal, and optionally at least one source of ions of trivalent element X. The reaction mixture has the following mole composition: Y:X=10 to infinity; OH:Y=0. 001 to 2; and M:Y=0. 001 to 2; wherein M is an alkali metal. The amount of water in the mixture is at least sufficient to permit extrusion of said reaction mixture.

US Patent:

7867937, Jan 11, 2011

Filed:

Dec 11, 2007

Appl. No.:

12/001361

Inventors:

William A. Wachter - Flemington NJ, US
Jeffrey T. Elks - Geneva IL, US
Brenda A. Raich - Annandale NJ, US
Theodore E. Datz - Easton PA, US
Mary T. Van Nostrand - Clinton NJ, US
Gordon F. Stuntz - Hellertown PA, US
David O. Marler - Easton PA, US
Nicholas Rollman - Slatington PA, US

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

B01J 35/02

US Classification:

502 60

Abstract:

Catalysts for experimentation are produced having a controlled matrix pore structure. The manufacturing process utilizes tape casting in the drying procedure in which a catalyst slurry is cast on a substrate and dried at a temperature of between about 50 C. to 200 C. for a period of time of about 0. 1 to 1. 0 hour. The dried catalyst particles can be removed from the substrate by several techniques, including scraping, burning, and deforming the substrate material. The resulting catalytic particles can be produced in an amount of about ca. 3 g to 300 g from slurries with volumes between 5 cc to 500 cc, which are suitable for small scale FCC reactors and for high throughput experimentation.

US Patent:

7361619, Apr 22, 2008

Filed:

Apr 6, 2004

Appl. No.:

10/819379

Inventors:

Andrzej M. Malek - Doylestown PA, US
Stephen C. Leviness - Tulsa OK, US
Horacio M. Trevino - Annandale NJ, US
Weldon K. Bell - Ridgeway IA, US
David O. Marler - Morris Plains NJ, US

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

B01J 20/34
B01J 21/20
B01J 23/00
B01J 25/04
B01J 27/28

US Classification:

502 20, 502324, 502326, 502335, 502337, 502319, 502305, 502321, 502350, 502339

Abstract:

Dispersed Active Metal catalyst for hydrogenation reactions is produced by treating a substantially catalytically inactive metal particulate with a solution capable of oxidizing the metal particulate and comprising of at least one compound of a hydrogenation catalyst metal thereby forming a layer of at least one of hydroxides and oxides thereon. The metal particulate is activated by treatment with a hydrogen-containing gas at elevated temperatures to form a porous layer of Dispersed Active Metal catalyst. Preferably, the treated metal particulate is dried prior to activation, and also preferably calcined in an oxidant-containing atmosphere prior to activation. The treatment solution may advantageously contain a compound of at least one promoter metal for the added catalyst metal. The porosity of the layer provides enhanced catalyst activity as well as improved methane selectivity in the Fischer-Tropsch process.

US Patent:

20110152062, Jun 23, 2011

Filed:

Dec 1, 2010

Appl. No.:

12/957817

Inventors:

William A. Wachter - Flemington NJ, US
Brenda A. Raich - Annandale NJ, US
Theodore E. Datz - Easton PA, US
David O. Marler - Easton PA, US
Nicholas Rollman - Hamburg PA, US
Jeffrey T. Elks - Geneva IL, US
Gordon F. Stuntz - Baton Rouge LA, US

Assignee:

EXXONMOBIL RESEARCH AND ENGINEERING COMPANY - Annandale NJ

International Classification:

B01J 37/08
B01J 37/10
B01J 35/10
B01J 31/06
B01J 29/04

US Classification:

502 60, 502100, 502159

Abstract:

Catalysts for experimentation are produced having a controlled matrix pore structure. The manufacturing process utilizes tape casting in the drying procedure in which a catalyst slurry is cast on a substrate and dried at a temperature of between about 50 C. to 200 C. for a period of time of about 0.1 to 1.0 hour. The dried catalyst particles can be removed from the substrate by several techniques, including scraping, burning, and deforming the substrate material, The resulting catalytic particles can be produced in an amount of about ca. 3 g to 300 g from slurries with volumes between 5 cc to 500 cc, which are suitable for small scale FCC reactors and for high throughput experimentation.

US Patent:

55523579, Sep 3, 1996

Filed:

Aug 25, 1994

Appl. No.:

8/294801

Inventors:

Rudolph M. Lago - Yardley PA
David O. Marler - Deptford NJ
Sharon B. McCullen - Newtown PA
David H. Olson - Pennington NJ

Assignee:

Mobil Oil Corporation - Fairfax VA

International Classification:

B01J 2906

US Classification:

502 63

Abstract:

A process for shape selective hydrocarbon conversion involves contacting a hydrocarbon feedstream under conversion conditions with a catalytic molecular sieve which has been modified by treatment with an amino silane polymer while molecular sieve acid sites are protected. When the process is toluene disproportionation, a toluene feedstream may also contain a second silicon source which is a high p-xylene selectivating agent. The invention also includes the modification method and the shape selective catalyst which results from the modification.

US Patent:

49622579, Oct 9, 1990

Filed:

Jan 24, 1990

Appl. No.:

7/469633

Inventors:

Robert P. L. Absil - W. Deptford NJ
Scott Han - Lawrenceville NJ
David O. Marler - Deptford NJ
David S. Shihabi - Pennington NJ

Assignee:

Mobil Oil Corp. - New York NY

International Classification:

C07C 552

US Classification:

585475

Abstract:

A process is provided for the disproportionation of toluene which comprises contacting toluene under disproportionation conditions with a catalyst comprising a particular synthetic porous crystalline molecular sieve.

US Patent:

51571854, Oct 20, 1992

Filed:

Sep 1, 1989

Appl. No.:

7/402018

Inventors:

Yung F. Chu - Plainsboro NJ
David O. Marler - Deptford NJ
John P. McWilliams - Woodbury NJ

Assignee:

Mobil Oil Corporation - Fairfax VA

International Classification:

C07C 266

US Classification:

585467

Abstract:

Alkylation of aromatics, e. g. ethylbenzene preparation, with minimized o-xylene make by contacting with olefin alkylating agent in the presence of ZSM-5 crystals having a diffusion rate constant of at least about 100 sec. sup. -1. times. 10. sup. -6 and an alpha value of less than about 100 prepared from a non-organic forming mixture comprising a silica source of precipitated silica having a particle size of 1 to 500 microns.