Lg Chem, Ltd

Korea Advanced Institute of Science and Technology

Dong Hyun Ko

Kyong Yong Cha

Jun Kyu Han

Ye Seul Hwang

Sang Jin Han

Myung Ji Suh

Sung Shik Eom

Jun Han Kang

Da Won Jung

Dae Heung Choi

Tae Yun Kim

Myungji Suh

Hyun Kil Nam

Mi Yeon Lee

Mi Young Kim

Min Ji Choi

Joo Hyuck Lee

Sun Hwan Hwang

Hyun Kyu Kim

Sunhwan Hwang

Seong Min Kim

Dae Chul Kim

Gyu Il Lee

Seongmin Kim

O Hak Kwon

Minkee Choi

Sungshik Eom

Joohyuck Lee

Daeheung Choi

Ji Joong Moon

Dawon Jung

Sang Gi Lee

Min Soo Kim

Kwang Ho Park

Taewoo Kim

Hyunseok Nam

Kyunglim Hyun

Moo Ho Hong

Se Won Baek

Jae Hoon Choe

Yoon Jae Min

Joo Young Cheon

Tae Youn Kim

Kyung Moo Lee

Jae Hong Kweon

You Moon Jeon

Jae Hui Choi

Chil Eui Hong

Jung Uk Choi

Dae Sun Rew

Sungpil Yang

Yeonwoo Choi

Hye Won Yang

Jaewon Jeong

Jae Kwon Jeoung

O Hark Kwon

Sung June Cho

Gyu Ll Lee

Hyun Jin Cho

Jaekwon Jeoung

Sangjun Shin

Jusang Yang

San Jin Han

Kyoung Yong Cha

Songhyun Lee

Seungpyeong Heo

Eun Sun Kim

Hyun Seok Nam

Gyu Ii Lee

Hyuk Woo Lee

Chae Young Ryu

Kwang Do Choi

A method for manufacturing a catalyst for a hydrogenation reaction, the method including: preparing a polymer support including a repeating unit of Formula 1, and supporting a catalytic component on the polymer support: wherein in Formula 1,means a point where the repeating units are linked, L1, L2 and L3 are O, R1 and R2 are the same as or different from each other, and are each independently hydrogen, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms, m is 0 or 1, and p and q are each independently an integer from 0 to 4.

Catalyst for hydrogenation reaction and method for manufacturing the same

A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support comprises a repeating unit represented by Formula 1.

Catalyst for hydrogenation reaction and method for producing same

The present specification relates to a method comprising: (A) mixing a ferrite-based catalyst molded article with diluent material particles; and (B) adding the mixture to a catalyst reactor, and a method for preparing butadiene using the same.

Catalyst loading method and method for preparation of butadiene by using same

A catalyst for a hydrogenation reaction including a polymer support and a catalytic component supported on the polymer support. The polymer support consists of a repeating unit represented by any one of Formulae 5 and 7 to 13.

A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support includes a repeating unit represented by Formula 1.

A method for preparing an aldehyde including forming a reaction product including an aldehyde by reacting an olefin-based compound with a synthetic gas in a hydroformylation reactor in the presence of a hydroformylation catalyst; introducing the reaction product including the aldehyde to a vaporizer; separating low-boiling point components of the reaction product from an upper part of a vaporizer catch pot included in the vaporizer; separating high-boiling point components of the reaction product from a lower part of the vaporizer catch pot; and recirculating at least a portion of the low-boiling point components separated from an upper part of the vaporizer catch pot back to the vaporizer.

Method for preparing aldehyde and apparatus for preparing aldehyde

A method for manufacturing a catalyst for oxidative dehydrogenation reaction, a catalyst for oxidative dehydrogenation reaction, and a method for manufacturing butadiene using the same.

Method for producing catalyst for oxidative dehydrogenation reaction, catalyst for oxidative dehydrogenation reaction, and method for producing butadiene using same

A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support includes a repeating unit represented by Formula 1 or 2.

A method for preparing a zinc ferrite-based catalyst comprising: obtaining a precipitate by bringing a metal precursor solution including a zinc precursor, a ferrite precursor, a solution containing an acid and water into contact with a basic aqueous solution; filtering the precipitate; drying the filtered precipitate; and firing the dried precipitate, wherein the solution containing the acid includes one or more of nitric acid (HNO) and hydrocarbon acid.

Method for preparing zinc ferrite-based catalyst and zinc ferrite-based catalyst prepared thereby

A method for preparing alpha-methylstyrene according to one embodiment of the present disclosure includes dehydrating a dimethylbenzyl alcohol solution in a reactor under an acid catalyst to prepare alpha-methylstyrene, where a reaction product after the dehydration reaction comprises a first reaction product including a first alpha-methylstyrene; and a second reaction product including vapor (HO), a second alpha-methylstyrene and unreacted materials; and separating the second alpha-methylstyrene and the unreacted materials comprised in the second reaction product and recirculating the second alpha-methylstyrene and the unreacted materials to the reactor, a temperature inside the reactor during the dehydration reaction is 135° C. or higher, and a content of the acid catalyst is from 100 ppm to 1,500 ppm based on a total weight of dimethylbenzyl alcohol of the dimethylbenzyl alcohol solution.

Method for preparing alpha-methylstyrene

Provided is a catalyst for oxidative dehydrogenation, a method of preparing the catalyst, and a method of performing oxidative dehydrogenation using the catalyst. The catalyst for oxidative dehydrogenation has improved durability and fillability by including a porous support coated with a metal oxide (ABO) according to Equation 1:wt %+wt %=100 wt %,&#x2003;&#x2003;&#x3c;Equation 1&#x3e;

Catalyst for oxidative dehydrogenation, method of preparing catalyst, and method of performing oxidative dehydrogenation using catalyst

Provided is a catalyst for an oxidative dehydrogenation reaction that comprises: a porous support; a core portion supported on the porous support and containing a first zinc ferrite-based catalyst; and a shell portion supported on the core portion and containing a second zinc ferrite-based catalyst, in which the first zinc ferrite-based catalyst and the second zinc ferrite-based catalyst are different from each other.

Catalyst for oxidative dehydrogenation reaction, and method for producing same

A hydroformylation catalyst having excellent catalytic activity and stability, a composition including the hydroformylation catalyst, and a method of preparing an aldehyde using the hydroformylation catalyst, wherein, when hydroformylation of an olefin compound is performed in the presence of the hydroformylation catalyst to prepare an aldehyde, the normal/iso (n/i) ratio of the prepared aldehyde is lowered, and synthesis gas yield is increased.

Composition including hydroformylation catalyst

The method for preparing a ferrite-based coating catalyst including mixing a support, a ferrite-based catalyst, a cellulose-based additive, and water, in which a content of the cellulose-based additive is 0.5 wt % or less based on a total weight of the ferrite-based catalyst.

Method for producing ferrite-based coating catalyst and method for producing butadiene by using same

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Daejeon, South Korea

Dong Hyun Ko