Yu S Liu

US Patent:

7820130, Oct 26, 2010

Filed:

Nov 24, 2004

Appl. No.:

10/996869

Inventors:

Valery N. Khabashesku - Houston TX, US
Yu Liu - Houston TX, US
John L. Margrave - Bellaire TX, US

Assignee:

William Marsh Rice University - Houston TX

International Classification:

C01B 31/06

US Classification:

423446

Abstract:

The present invention is directed to functionalized nanoscale diamond powders, methods for making such powders, applications for using such powders, and articles of manufacture comprising such powders. Methods for making such functionalized nanodiamond powders generally comprise a fluorination of nanodiamond powder. In some embodiments, such methods comprise reacting fluorinated nanodiamond powder with a subsequent derivatization agent, such as a strong nucleophile.

US Patent:

8598399, Dec 3, 2013

Filed:

Mar 7, 2011

Appl. No.:

13/576431

Inventors:

Yu Liu - Lake Jackson TX, US
Andrzej M. Malek - Midland MI, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C07C 1/00

US Classification:

585640, 585638, 585639, 502 71, 502 77, 502241

Abstract:

A process to prepare propylene showing desirably increased selectivity comprises contacting, at an elevated temperature, ethanol and a rhenium oxide-modified ZSM-5 zeolite catalyst, under conditions suitable to form propylene. The rhenium oxide-modified ZSM-5 zeolite catalyst may be prepared by impregnating, in an aqueous or organic medium, a ZSM-5 zeolite with a rhenium source, under conditions suitable to form a catalyst precursor, and calcining the catalyst precursor under conditions suitable to form a rhenium oxide-modified ZSM-5 zeolite catalyst.

US Patent:

20120208695, Aug 16, 2012

Filed:

Nov 2, 2010

Appl. No.:

13/501108

Inventors:

Billy B. Bardin - Lake Jackson TX, US
David G. Barton - Midland MI, US
Adam Chojecki - Gent, BE
Howard W. Clark - Lake Jackson TX, US
Daniela Ferrari - Antwerp, BE
Yu Liu - Lake Jackson TX, US
Mark H. McAdon - Midland MI, US
Dean M. Millar - Midland MI, US
Neelesh Rane - Terneuzen, NL
Hendrik E. Tuinstra - Midland MI, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

B01J 21/08
B01J 21/06
B01J 21/04
B01J 21/10

US Classification:

502241, 502242, 502243, 502248, 502304, 502306, 502307, 502308, 502312

Abstract:

A supported catalyst composition suitable for use in converting synthesis gas to alcohols comprises a catalytic metal, a catalyst promoter and a catalyst support.

US Patent:

20130012748, Jan 10, 2013

Filed:

Mar 11, 2011

Appl. No.:

13/576429

Inventors:

Yu Liu - Lake Jackson TX, US
Andrzej M. Malek - Midland MI, US

Assignee:

DOW GLOBAL TECHNOLOGIES LLC - Midland MI

International Classification:

C07C 1/20

US Classification:

585639

Abstract:

A process for converting an oxygenate-containing feedstock to a product comprising olefins comprises including in the oxygenate-containing feedstock an amount of ammonia. The presence of the ammonia increases the product's ratio of ethylene to propylene.

US Patent:

20130012749, Jan 10, 2013

Filed:

Feb 25, 2011

Appl. No.:

13/634619

Inventors:

Yu Liu - Lake Jackson TX, US
Andrzej M. Malek - Midland MI, US
Duncan Coffey - Lake Jackson TX, US
Eric E. Stangland - Midland MI, US
Albert E. Schweizer - Port St. Lucie FL, US

International Classification:

C07C 1/22
B01J 8/00

US Classification:

585640, 422129

Abstract:

Catalytic composition for production of olefins and methods of using same to decrease production of oxygenate byproducts. The catalytic composition includes an admixture of an alumina dehydration catalyst and at least one additional metal oxide.

US Patent:

20220270361, Aug 25, 2022

Filed:

Feb 10, 2020

Appl. No.:

17/760620

Inventors:

- HOUSTON TX, US
Yu LIU - Houston TX, US

International Classification:

G06V 20/05
G06T 7/136
G06T 5/00
E21B 44/00
E21B 47/001
E21B 47/002

Abstract:

This disclosure is directed to initiating adjustment of an operation associated with an underwater drilling system, which may include receiving at least one underwater image; identifying the reference object in the at least one underwater image, wherein a position of the reference object is fixed relative to an underwater borehole or an underwater cloud; determining a first parameter associated with the reference object; identifying the underwater cloud in the at least one underwater image; determining a second parameter associated with the underwater cloud; adjusting the second parameter associated with the underwater cloud based on the first parameter associated with the reference object; and initiating an adjustment of the operation associated with the underwater drilling system based on the adjusted second parameter associated with the underwater cloud.

US Patent:

20220251005, Aug 11, 2022

Filed:

Jun 8, 2020

Appl. No.:

17/621945

Inventors:

- Midland MI, US
Lin Luo - Sugar Land TX, US
Yu Liu - Lake Jackson TX, US
Matthew T. Pretz - Lake Jackson TX, US
Andrzej Malek - Midland MI, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C07C 7/167
C07C 7/00
C07C 7/04
C07C 4/04
C07C 5/333
B01J 23/62
B01D 45/16
B01D 3/14

Abstract:

A method for operating an acetylene hydrogenation unit of a steam cracking system that integrates a fluidized catalytic dehydrogenation (FCDh) effluent from a fluidized catalytic dehydrogenation (FCDh) system may include separating a cracked gas from the steam cracking system into at least a hydrogenation feed comprising at least acetylene, CO, and hydrogen, introducing the FCDh effluent to the separation system, combining the FCDh effluent with the cracked gas upstream of the separation system, or both. The method may include hydrogenating acetylene in the hydrogenation feed. Elevated CO concentration in the hydrogenation feed due to the FCDh effluent may reduce a reaction rate of acetylene hydrogenation. The acetylene hydrogenation unit may operate at an elevated temperature relative to normal operating temperatures when the portion of the FCDh effluent is not integrated, such that a concentration of acetylene in the hydrogenated effluent is less than a threshold acetylene concentration.

US Patent:

20220251006, Aug 11, 2022

Filed:

Jun 8, 2020

Appl. No.:

17/621949

Inventors:

- Midland MI, US
Hangyao Wang - Pearland TX, US
Yu Liu - Lake Jackson TX, US
Barry B. Fish - Lake Jackson TX, US

Assignee:

Dow Global Technologies LLC - Midland MI

International Classification:

C07C 7/167
C07C 5/03
C07C 7/00
C07C 7/04
B01J 23/62
B01D 3/14

Abstract:

A method for operating an integrated system for producing olefins may include contacting a hydrogenation feed with a first hydrogenation catalyst to produce a hydrogenated effluent, the hydrogenation feed including at least a portion of a first process effluent from a first olefin production process and at least a portion of a second process effluent from a second olefin production process. The hydrogenation feed may include at least hydrogen, ethylene, carbon monoxide, acetylene, methyl acetylene, and propadiene, and the first hydrogenation catalyst may be a hydrogenation catalyst having a temperature operating range of at least 40 C. The hydrogenated effluent may include methyl acetylene, propadiene, or both. The method may further include contacting at least a portion of the hydrogenated effluent with a second hydrogenation catalyst, which may cause hydrogenation of at least a portion of the methyl acetylene and propadiene to produce an MAPD hydrogenated effluent.