John Kc Chen

US Patent:

7408092, Aug 5, 2008

Filed:

Nov 12, 2004

Appl. No.:

10/988136

Inventors:

Bryan K. Glover - Algonquin IL, US
John Q. Chen - Glenview IL, US
Peter R. Pujado - Kildeer IL, US
Bipin V. Vora - Naperville IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C07C 1/00

US Classification:

585640

Abstract:

The average propylene cycle selectivity of an oxygenate to propylene (OTP) process using a dual-function oxygenate conversion catalyst is substantially enhanced by the use of a combination of: 1) moving bed reactor technology in the hydrocarbon synthesis portion of the OTP flow scheme in lieu of the fixed bed technology of the prior art; 2) a hydrothermally stabilized and dual-functional catalyst system comprising a molecular sieve having dual-function capability dispersed in a phosphorus-modified alumina matrix containing labile phosphorus and/or aluminum anions; and 3) a catalyst on-stream cycle time of 400 hours or less. These provisions stabilize the catalyst against hydrothermal deactivation and hold the build-up of coke deposits on the catalyst to a level which does not substantially degrade dual-function catalyst activity, oxygenate conversion and propylene selectivity, thereby enabling maintenance of average propylene cycle yield near or at essentially start-of-cycle levels.

US Patent:

7432406, Oct 7, 2008

Filed:

Jun 10, 2004

Appl. No.:

10/865271

Inventors:

John Q. Chen - Glenview IL, US
Jaime G. Moscoso - Mount Prospect IL, US
Jeffery C. Bricker - Buffalo Grove IL, US
Michelle J. Cohn - Glenview IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C07C 5/327

US Classification:

585654, 585660

Abstract:

A dehydrogenation process using an improved noble metal containing catalyst is disclosed. The catalyst comprises a non-acidic molecular sieve having a three-dimensional microporous framework structure of tin, aluminum and silicon tetrahedral oxide units. The non-acidic molecular sieve has a noble metal such as platinum dispersed thereon. The molecular sieve is rendered non-acidic by treating it with an alkali or alkaline earth metal. At least 10% of the tin is in a reduced oxidation state.

US Patent:

7547812, Jun 16, 2009

Filed:

Jun 30, 2005

Appl. No.:

11/171801

Inventors:

Wharton Sinkler - Des Plaines IL, US
Robert W. Broach - Deerfield IL, US
Natasha Erdman - Somerville MA, US
Thomas M. Reynolds - Mobile AL, US
John Q. Chen - Glenview IL, US
Stephen T. Wilson - Libertyville IL, US
Paul T. Barger - Arlington Heights IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C07C 1/00
B01J 27/182

US Classification:

585640, 502208, 502214, 502263, 423709

Abstract:

A catalyst for converting methanol to light olefins and the process for making and using the catalyst are disclosed and claimed. SAPO-34 is a specific catalyst that benefits from its preparation in accordance with this invention. A seed material is used in making the catalyst that has a higher content of the EL metal than is found in the principal part of the catalyst. The molecular sieve has predominantly a roughly rectangular parallelepiped morphology crystal structure with a lower fault density and a better selectivity for light olefins.

US Patent:

7550403, Jun 23, 2009

Filed:

Jun 30, 2005

Appl. No.:

11/171886

Inventors:

John Q. Chen - Des Plaines IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01J 38/06
B01J 38/48
B01J 38/66

US Classification:

502 22, 502 20, 502 26, 502 34, 502 54, 502 55

Abstract:

The invention is directed to a method of rejuvenating silicoaluminophosphate molecular sieve catalyst that has been deactivated hydrothermally as well as a method of using the rejuvenated catalyst to make an olefin product from an oxygenate feed. In particular, the invention is directed to rejuvenating the catalyst by contacting it with warm water, ammonium salts, dilute acids or low pressure steam until the catalytic activity level of the catalyst has been increased to the desired extent.

US Patent:

7550641, Jun 23, 2009

Filed:

May 20, 2008

Appl. No.:

12/123545

Inventors:

John Q. Chen - Glenview IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01J 38/06
B01J 38/48
B01J 38/66
C07C 1/00

US Classification:

585640, 502 20, 502 22, 502 26, 502 34, 502 27, 502 54, 502 55

Abstract:

The invention is directed to a method of rejuvenating silicoaluminophosphate molecular sieve catalyst that has been deactivated hydrothermally as well as a method of using the rejuvenated catalyst to make an olefin product from an oxygenate feed. In particular, the invention is directed to rejuvenating the catalyst by contacting it with warm water, ammonium salts, dilute acids or low pressure steam until the catalytic activity level of the catalyst has been increased to the desired extent.

US Patent:

7763766, Jul 27, 2010

Filed:

Dec 22, 2005

Appl. No.:

11/315933

Inventors:

Andrea G. Bozzano - Northbrook IL, US
Steven A. Bradley - Arlington Heights IL, US
Ricardo L. Castillo - Arlington Heights IL, US
John Q. Chen - Glenview IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C07C 1/00
C10G 75/04
C10G 9/16

US Classification:

585640, 585639, 208 48 AA, 208 48 R

Abstract:

A process for producing light olefins from oxygenates wherein internal reactor are protected from metal-catalyzed coking preferably by employing a protective layer.

US Patent:

7972989, Jul 5, 2011

Filed:

Apr 28, 2009

Appl. No.:

12/431297

Inventors:

Wharton Sinkler - Des Plaines IL, US
Robert W. Broach - Des Plaines IL, US
Natasha Erdman - Somerville MA, US
Thomas M. Reynolds - Chickasaw AL, US
John Q. Chen - Des Plaines IL, US
Stephen T. Wilson - Des Plaines IL, US
Paul T. Barger - Des Plaines IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01J 27/182
C01B 33/26

US Classification:

502214, 423700, 423701, 423702, 423703, 423704, 423705, 423706, 423709

Abstract:

A catalyst for converting methanol to light olefins and the process for making and using the catalyst are disclosed and claimed. SAPO-34 is a specific catalyst that benefits from its preparation in accordance with this invention. A seed material is used in making the catalyst that has a higher content of the EL metal than is found in the principal part of the catalyst. The molecular sieve has predominantly a roughly rectangular parallelepiped morphology crystal structure with a lower fault density and a better selectivity for light olefins.

US Patent:

7973208, Jul 5, 2011

Filed:

Apr 28, 2009

Appl. No.:

12/431284

Inventors:

Wharton Sinkler - Des Plaines IL, US
Robert W. Broach - Deerfield IL, US
Natasha Erdman - Somerville MA, US
Thomas M. Reynolds - Mobile AL, US
John Q. Chen - Glenview IL, US
Stephen T. Wilson - Libertyville IL, US
Paul T. Barger - Arlington Heights IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C07C 1/02

US Classification:

585640, 585327, 585329, 585639, 502208, 502214, 502238, 423305, 423306, 208114, 208136

Abstract:

A catalyst for converting methanol to light olefins and the process for making and using the catalyst are disclosed and claimed. SAPO-34 is a specific catalyst that benefits from its preparation in accordance with this invention. A seed material is used in making the catalyst that has a higher content of the EL metal than is found in the principal part of the catalyst. The molecular sieve has predominantly a roughly rectangular parallelepiped morphology crystal structure with a lower fault density and a better selectivity for light olefins.