John L Buchanan

US Patent:

7326332, Feb 5, 2008

Filed:

Sep 25, 2003

Appl. No.:

10/671080

Inventors:

Tan-Jen Chen - Kingwood TX, US
John Scott Buchanan - Lambertville NJ, US
Brian Erik Henry - Baton Rouge LA, US
Paul F. Keusenkothen - Houston TX, US
Philip A. Ruziska - Kingwood TX, US
David L. Stern - Annandale NJ, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C10G 11/00
C10G 11/05

US Classification:

20812001, 208 68, 208113, 208114, 502 64, 585519

Abstract:

A multi component catalyst and catalytic cracking process for selectively producing Colefins. The catalyst comprises a first molecular sieve having an intermediate pore size, a second molecular sieve and, optionally a third molecular sieve having a large pore size. At least one of the channels of the second molecular sieve has a pore size index that is less than the pore size index of at least one channel of the first molecular sieve. The process is carried out by contacting a feedstock containing hydrocarbons having at least 5 carbon atoms is contacted, under catalytic cracking conditions, with the multi component catalyst. The catalyst finds application in the cracking of naphtha and heavy hydrocarbon feedstocks.

US Patent:

7615143, Nov 10, 2009

Filed:

Jul 30, 2004

Appl. No.:

10/903152

Inventors:

Tan-Jen Chen - Kingwood TX, US
Paul F. Keusenkothen - Houston TX, US
J. Jason Wu - Clinton NJ, US
John Scott Buchanan - Lambertville NJ, US
Guang Cao - Branchburg NJ, US
Larry L. Iaccino - Seabrook TX, US
David L. Stern - Baton Rouge LA, US
Matthew J. Vincent - Baytown TX, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C10G 11/05

US Classification:

20812001, 208113, 208114, 208118, 2081201, 20812015, 585653

Abstract:

There is provided a catalyst composition having improved hydrothermal stability for the catalytic cracking of a hydrocarbon feedstock to selectively produce propylene. The catalyst composition comprises a first crystalline molecular sieve selected from the group consisting of IM-5, MWW, ITH, FER, MFS, AEL, and AFO and an effective amount of a stabilization metal (copper, zirconium, or mixtures thereof) exchanged into the molecular sieve. The catalyst finds application in the cracking of naphtha and heavy hydrocarbon feedstocks. When used in the catalytic cracking of heavier hydrocarbon feedstocks, the catalyst composition preferably comprises a second molecular sieve having a pore size that is greater than the pore size of the first molecular sieve. The process is carried out by contacting a feedstock containing hydrocarbons having at least 4 carbon atoms is contacted, under catalytic cracking conditions, with the catalyst composition.

US Patent:

7847128, Dec 7, 2010

Filed:

Aug 12, 2008

Appl. No.:

12/663303

Inventors:

Tan-Jen Chen - Kingwood TX, US
Jane C. Cheng - Bridgewater NJ, US
Terry E. Helton - Bethlehem PA, US
John Scott Buchanan - Lambertville NJ, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C07C 45/27
C07C 37/08
C07C 2/68
C07C 15/067

US Classification:

568361, 568798, 585446, 585467

Abstract:

In a process for producing cyclohexylbenzene, benzene and hydrogen are fed to at least one reaction zone. The benzene and hydrogen are then contacted in the at least one reaction zone under hydroalkylation conditions with a catalyst system comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12. 40. 25, 6. 90. 15, 3. 570. 07 and 3. 420. 07 Angstrom, and at least one hydrogenation metal to produce an effluent containing cyclohexylbenzene. The catalyst system has an acid-to-metal molar ratio of from about 75 to about 750.

US Patent:

7906685, Mar 15, 2011

Filed:

Aug 12, 2008

Appl. No.:

12/601572

Inventors:

Tan-Jen Chen - Kingwood TX, US
Francisco M. Benitez - Houston TX, US
Jane C. Cheng - Bridgewater NJ, US
Jon E. Stanat - Houston TX, US
John Scott Buchanan - Lambertville NJ, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C07C 45/27
C07C 27/08
C07C 2/68
C07C 15/067

US Classification:

568361, 568798, 585446, 585467

Abstract:

In a process for producing cyclohexylbenzene, benzene and hydrogen are fed to at least one reaction zone. The benzene and hydrogen are then contacted in the at least one reaction zone under hydroalkylation conditions with a catalyst system comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12. 40. 25, 6. 90. 15, 3. 570. 07 and 3. 420. 07 Angstrom, and at least one hydrogenation metal to produce an effluent containing cyclohexylbenzene. The ratio of the total number of moles of hydrogen fed to said at least one reaction zone to the number of moles of benzene fed to said at least one reaction zone is between 0. 4 and 0. 9:1.

US Patent:

7910778, Mar 22, 2011

Filed:

Jul 11, 2008

Appl. No.:

12/665154

Inventors:

Tan-Jen Chen - Kingwood TX, US
John Scott Buchanan - Lambertville NJ, US
Jane Chi-ya Cheng - Bridgewater NJ, US
Terry E. Helton - Bethlehem PA, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C07C 45/27
C07C 27/08
C07C 2/68
C07C 15/067

US Classification:

568361, 568798, 585446, 585467

Abstract:

In a process for producing cyclohexylbenzene, benzene and hydrogen are contacted with a catalyst under hydroalkylation conditions to produce an effluent containing cyclohexylbenzene. The catalyst comprises a composite of a molecular sieve, an inorganic oxide different from said molecular sieve and at least one hydrogenation metal, wherein at least 50 wt % of said hydrogenation metal is supported on the inorganic oxide.

US Patent:

7910779, Mar 22, 2011

Filed:

Oct 14, 2010

Appl. No.:

12/904215

Inventors:

Tan-Jen Chen - Kingwood TX, US
Jane C. Cheng - Bridgewater NJ, US
Terry E. Helton - Bethlehem PA, US
John Scott Buchanan - Lambertville NJ, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C07C 45/27
C07C 27/08
C07C 2/68
C07C 15/067

US Classification:

568361, 568798, 585446, 585467

Abstract:

In a process for producing cyclohexylbenzene, benzene and hydrogen are fed to at least one reaction zone. The benzene and hydrogen are then contacted in the at least one reaction zone under hydroalkylation conditions with a catalyst system comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12. 40. 25, 6. 90. 15, 3. 570. 07 and 3. 420. 07 Angstrom, and at least one hydrogenation metal to produce an effluent containing cyclohexylbenzene. The catalyst system has an acid-to-metal molar ratio of from about 75 to about 750.

US Patent:

8519194, Aug 27, 2013

Filed:

Nov 24, 2009

Appl. No.:

13/145007

Inventors:

Tan-Jen Chen - Kingwood TX, US
Francisco M. Benitez - Houston TX, US
John S. Buchanan - Lambertville NJ, US
Jane C. Cheng - Bridgewater NJ, US
Jon E. Stanat - Westhampton Beach NY, US

Assignee:

ExxonMobil Chemical Patents Inc. - Houston TX

International Classification:

C07C 45/27
C07C 27/08
C07C 2/64
C07C 2/66

US Classification:

568361, 568708, 585446, 585467

Abstract:

In a process for producing cyclohexylbenzene, benzene and hydrogen are fed to at least one reaction zone comprising a catalyst system which comprises a molecular sieve and at least one hydrogenation metal. The MCM-22 family molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12. 40. 25, 6. 90. 15, 3. 570. 07 and 3. 420. 07 Angstrom, and the hydrogenation metal is selected from the group consisting of palladium, ruthenium, nickel, zinc, tin, cobalt, and combinations of any two or more thereof. Hydroalkylation conditions of temperature and pressure are selected to produce a hydroalkylation conversion in a range of from about 15% to about 75% The benzene and hydrogen are then contacted in the at least one reaction zone under said selected hydroalkylation condition to produce an effluent containing cyclohexylbenzene.

US Patent:

20030173254, Sep 18, 2003

Filed:

Nov 4, 2002

Appl. No.:

10/287251

Inventors:

Ten-Jen Chen - Kingwood TX, US
Paul Keusenkothen - Houston TX, US
John Buchanan - Lambertville NJ, US
Kirk Schmitt - Pennington NJ, US

International Classification:

C10G011/05

US Classification:

208/120010, 208/118000, 208/119000

Abstract:

A catalytic cracking process is disclosed for feedstock containing hydrocarbons having at least 5 carbon atoms. The feedstock is contacted, under catalytic cracking conditions, with a 9-member ring catalyst composition and, optionally, a large pore molecular sieve, such as zeolite Y.