Hwaili R Soo

6511938, Jan 28, 2003

Mar 21, 1996

08/619216

Albert Cheng-Yu Liu - Charleston WV
Erlind Magnus Thorsteinson - Charleston WV
Hwaili Soo - Charleston WV
James Herndon McCain - Charleston WV
David Michael Minahan - Cross Lanes WV

Union Carbide Chemicals Plastics Technology Corporation - Danbury CT

B01J 2350

502347, 502325, 502326, 502330, 502344

Catalysts for the production of alkylene oxide by the epoxidation of alkene with oxygen comprise a silver-containing support, and a sufficient amount of cobalt component to enhance at least one of activity and/or efficiency and/or stability as compared to a similar catalyst which does not contain cobalt component.

7615655, Nov 10, 2009

Aug 9, 2004

10/571508

Liping Zhang - Hurricane WV, US
Hwaili Soo - Charleston WV, US
Juliana G. Serafin - Charleston WV, US

Dow Global Technologies, Inc. - Midland MI

C07D 301/10

549534

An improved process for the manufacture of ethylene oxide through the epoxidation of ethylene using a catalyst comprising silver and at least one efficiency-enhancing salt of a member of a redox-half reaction pair. Added to the epoxidation reaction is a two-component gas-phase promoter system comprising a chlorine-containing component (for example ethyl chloride, methyl chloride, vinyl chloride and ethylene dichloride), and a nitrogen-containing component of nitric oxide and other compounds capable of generating under reaction conditions at least one gaseous efficiency-enhancing member of a redox-half reaction pair comprising NO, NO, NOor NO. The amount of each component of said gaseous promoter is adjusted to maintain the ration of N* to Z* less than or equal to 1 wherein, N* is the nitric oxide equivalent in ppmv, ranging from 1 to 20 ppmv and Z*=ethyl chloride equivalent (ppmv)*100 percent/ethane equivalent (mol percent)*100 ranging from 5 to 40 ppmv.

8309771, Nov 13, 2012

Jul 31, 2009

12/533753

Joseph C. Noronha - Charleston WV, US
Elbert J. Campbell - Missouri City TX, US
Brian T. Keen - Pinch WV, US
Dick A. Nagaki - Sun Prairie WI, US
Hwaili Soo - Charleston WV, US
David A. Spears - Midland MI, US
John F. Szul - Hurricane WV, US

Dow Technology Investments LLC - Midland MI

C07C 29/03

568860, 568865, 568867

A two-stage, gas phase process for manufacturing alkylene glycol (e. g. , ethylene glycol) from an alkene (e. g. , ethylene), oxygen and water, the process comprising the steps of:.

8389751, Mar 5, 2013

Apr 20, 2010

12/763276

Liping Zhang - Lake Jackson TX, US
William H. Henstock - Charleston WV, US
Hwaili Soo - Charleston WV, US

Dow Technology Investments LLC - Midland MI

C07D 301/10

549534

A simplified method of operating an alkylene oxide production process that utilizes a high efficiency silver catalyst is shown and described. The method accounts for declining catalyst activity that occurs as the catalyst ages by making alternating changes to the reaction temperature and an overall chloriding effectiveness parameter.

8513156, Aug 20, 2013

Jul 30, 2010

12/846984

Juliana G. Serafin - Charleston WV, US
Seyed R. Seyedmonir - Charleston WV, US
Albert C. Liu - Charleston WV, US
Hwaili Soo - Charleston WV, US
Thomas Szymanski - Hudson OH, US

B01J 23/48
B01J 23/50
B01J 23/00
B01J 23/08
B01J 21/00

502347, 502349, 502355, 502242, 502243, 502258

A catalyst for the manufacture of alkylene oxide, for example ethylene oxide, by the vapor-phase epoxidation of alkene containing impregnated silver and at least one efficiency-enhancing promoter on an inert, refractory solid support, said support incorporating a sufficient amount of zirconium component (present and remaining substantially as zirconium silicate) as to enhance at least one of catalyst activity, efficiency and stability as compared to a similar catalyst which does not contain the zirconium component.

8513444, Aug 20, 2013

Apr 20, 2010

12/763477

Michael Habenschuss - South Charleston WV, US
Hwaili Soo - Charleston WV, US
Paul V. Hinman - Charleston WV, US
Albert C. Liu - Charleston WV, US

C07D 301/10
C07D 301/03

549536, 549534

A method of producing an alkylene oxide includes passing a reaction mixture comprising alkylene, oxygen and a gaseous chlorine-containing promoter species over a supported catalyst containing silver and a promoting amount of rhenium to undergo an epoxidation reaction at a first operating condition. The method further includes subsequently performing the epoxidation reaction at a preferred operating condition. The preferred operating condition is characterized by an efficiency of the epoxidation reaction toward the alkylene oxide where the efficiency is lower than that of a maximum efficiency achievable at an operating temperature corresponding to the preferred operating condition.

8546294, Oct 1, 2013

Apr 14, 2010

12/760044

Albert C. Liu - Charleston WV, US
Hwaili Soo - Charleston WV, US

Dow Technology Investments, LLC - Midland MI

B01J 23/00
B01J 21/00

502241, 502250, 502254, 502255, 502355, 502415, 502439

The present invention provides rhenium-promoted epoxidation catalysts based upon shaped porous bodies comprising a minimized percentage of their total pore volume being present in pores having diameters of less than one micron, and a surface area of at least about 1. 0 m/g. Processes of making the catalysts and using them in epoxidation processes are also provided.

20060258532, Nov 16, 2006

Jun 2, 2004

10/567178

Erlind Thorsteinson - Charleston WV, US
Madan Bhasin - Charleston WV, US
Albert Liu - Charleston WV, US
Juliana Serafin - Charleston WV, US
Seyed Seyedmonir - Charleston WV, US
Hwaili Soo - Charleston WV, US

B01J 23/50

502347000, 502439000

An improved carrier useful for preparing a catalyst having excellent catalytic performance when used in the production of alkylene oxide, such as ethylene oxide. The carrier is obtained by a) impregnating a preformed alpha-alumina carrier with at least one modifier selected from among alkali metal silicates and alkaline earth metal silicates, b) drying said impregnated carrier; and c) calcining said dried carrier. The carrier may optionally be washed, prior to being impregnated by conventional catalytic material and/or promoter material.