Jin H Yoo

6476257, Nov 5, 2002

Sep 28, 2001

09/964750

Sang-Eon Park - Daejeon, KR
Jin S. Yoo - Flossmoor IL
Ki-Won Jun - Daejeon, KR
David B. Raju - Daejeon, KR
Young-Ho Kim - Choongchungbook-do, KR

Korea Institute of Chemical Technology

C07C 5116

562412, 562413, 562414

The present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by liquid-phase oxidation. More particularly, the present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by oxidation in acetic acid as solvent with oxygen-containing gas in the presence of cobalt/manganese/bromine complex catalyst, wherein nickel and carbon dioxide in an appropriate amount are added to increase an activity of cobalt/manganese/bromine complex catalyst. Especially nickel has a synergistic effect with carbon dioxide and maximize the to formation of the desired product having the corresponding carboxylic groups to the number of alkyl groups in a reactant.

7591943, Sep 22, 2009

Sep 20, 2007

11/858449

Jin S. Yoo - Flossmoor IL, US
Sang-Chul Lee - Asan-si, KR
Ho Dong Kim - Gangneung-si, KR

Kocat Inc. - Seoul

C10G 27/04
C10G 45/04

208208R, 208243, 208244, 208249, 208295, 562412, 562413

The present invention relates to a process of reducing sulfur- or nitrogen-containing compounds and also producing oxygenates, which can be used as an excellent octane booster in the reformulated gasoline and as a cetane booster for the future oxygenated diesel in a one-pot reaction.

7615145, Nov 10, 2009

Oct 11, 2007

11/870820

Jin S. Yoo - Flossmoor IL, US
Sang-Chul Lee - Asan-si, KR
Ho Dong Kim - Gangneung-si, KR

Kocat Inc. - Seoul

C10G 17/00
C10G 45/04

208208R, 208243, 208244, 208245, 208295, 562412, 562413

The present invention relates to a process of reducing sulfur- or nitrogen-containing compounds and producing oxygenates, and in particular to a one-pot process of reducing sulfur- or nitrogen-containing compounds and also producing oxygenates in the presence of a homogeneous catalyst such as M/a first solvent or M/a second solvent/M/a third solvent or a mixture thereof, the process herein being useful as an excellent octane booster in the reformulated gasoline and as a cetane booster for the future oxygenated diesel in a one-pot reaction.

20080091043, Apr 17, 2008

Aug 24, 2007

11/844685

Jin S. Yoo - Flossmoor IL, US
Sang-Chul Lee - Asan-si, KR
Ho Dong Kim - Gangneung-si, KR

KOCAT INC. - Seoul

C07C 69/76

560103

The present invention relates to a process for producing an organic acid or its derivatives, which comprises oxidation of a hydrocarbon substrate in the presence of a homogeneous MC-type catalyst and an oxidant. In particular, the present invention relates to a process comprising oxidation of a hydrocarbon substrate in the presence of a homogeneous MC-type catalyst selected from Co/Br, Mn/Br, Co/Mn/Br and Co/Mn/M/Br and an O/COmixed gas oxidant where the partial pressure of Ois controlled to 30-40%, thereby improving the oxidation rate, the conversion, the selectivity and the yield even under milder conditions. Especially, the present invention remarkably reduces down to a negligible level the production of color impurities and other impurities such as 4-CBA and p-toluic acid, which had been conventionally removed by hydrogenation reduction. Further, the loss in acetic acid solvent due to combustion can also be drastically decreased using the method of the present invention.

42616999, Apr 14, 1981

Apr 23, 1979

6/032585

Jui-Yuan Sun - South Holland IL
Emmett H. Burk - Glenwood IL
Jin Sun Yoo - Flossmoor IL
George P. Masologites - Columbus NC

Atlantic Richfield Company - Philadelphia PA

C10L 900
C10L 910

44 15R

A process for reducing the sulfur and ash content of coal wherein coal particles are treated with a conditioning agent in an aqueous slurry prior to agglomeration with a minor amount of hydrocarbon oil. After separation of the coal-oil agglomerate from ash and mineral matter remaining in the aqueous slurry, additional oil is added to provide a slurry of coal particles in hydrocarbon oil. Agglomeration of remaining ash and mineral matter is effected by addition of a minor amount of water. After separation of the mineral agglomerate and recovery from the oil slurry, treated coal particles are substantially reduced in ash and sulfur content.

49635204, Oct 16, 1990

Aug 1, 1988

7/180577

Jin S. Yoo - Flossmoor IL
Cecelia A. Radlowski - Riverside IL
John A. Karch - Marriottsville MD
Alakananda Bhattacharyya - Columbia MD

UOP - Des Plaines IL

B01J 2906
B01J 2302
B01J 2104

502 64

A composition of matter comprising at least one metal-containing spinel which includes a first metal and a second metal having a valence higher than the valence of the first metal, a minor amount of at least one-third metal component effective to promote the oxidation of sulfur dioxide to sulfur trioxide at sulfur dioxide oxidation conditions, and a minor amount of at least one-fourth metal component effective to promote the reduction of first metal sulfate at first metal sulfate reduction conditions. These compositions are useful, e. g. , in hydrocarbon conversion processes, to reduce sulfur oxide and/or nitrogen oxide atmospheric emissions.

42240387, Sep 23, 1980

Jun 19, 1978

5/916666

George P. Masologites - Olympia Fields IL
Emmett H. Burk - Glenwood IL
Jin S. Yoo - South Holland IL
John A. Karch - Chicago IL

Atlantic Richfield Company - Philadelphia PA

C10L 910
C10B 5700

44 1SR

A process for reducing the sulfur content of coal comprising: (1) contacting an aqueous slurry of coal-oil agglomerates at elevated temperature with oxygen; and (2) recovering coal-oil agglomerates wherein the coal has reduced sulfur content.

44926774, Jan 8, 1985

May 17, 1984

6/611243

Jin S. Yoo - Flossmoor IL
Cecelia A. Radlowski - Riverside IL

Atlantic Richfield Company - Philadelphia PA

B01J 2001
B01J 2100
B01J 2300
C01B 1796

423244

An improved process for the production of alkaline earth, aluminum-containing spinel compositions, preferably magnesium, aluminum-containing spinel compositions and preferably further comprising at least one additional metal component, comprises combining at least one alkaline earth metal component; at least one organic compound having inherent basicity, and at least one aluminum component at selected pH conditions to form a precipitate and calcining the precipitate to form a spinel composition. The product spinel composition, prepared in the presence of such an organic template and preferably with included additional metal components, is particularly suited for use to reduce the amount of sulfur oxides emitted from a catalyst regeneration zone, e. g. , a catalytic cracking unit regeneration zone.