公开(公告)号：US11618012B2

公开(公告)日：2023-04-04

申请号：US16963639

申请日：2019-11-19

Applicant: LG CHEM, LTD.

Inventor： Ye Seul Hwang ,  Dong Hyun Ko ,  Joohyuck Lee ,  Myungji Suh

IPC: B01J23/889 ,  B01J21/12 ,  B01J23/80 ,  B01J23/86 ,  B01J35/08 ,  B01J37/02 ,  C07C5/48

Abstract: 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.

公开(公告)号：US11534744B2

公开(公告)日：2022-12-27

申请号：US17141574

申请日：2021-01-05

Applicant: LG CHEM, LTD.

Inventor： Mi Young Kim ,  Sung Shik Eom ,  Dong Hyun Ko ,  Da Won Jung ,  Tae Yun Kim ,  Min Ji Choi

IPC: B01J31/24 ,  B01J31/18 ,  C07C47/02 ,  C07C45/50 ,  C07C45/62 ,  B01J31/20

Abstract: 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.

公开(公告)号：US20220402846A1

公开(公告)日：2022-12-22

申请号：US17641716

申请日：2021-08-26

Applicant: LG CHEM, LTD.

Inventor： Jusang Yang ,  Sangjun Shin ,  Sungshik Eom ,  Tae Yun Kim ,  Dong Hyun Ko ,  Sungpil Yang

IPC: C07C45/50 ,  C07C45/82 ,  B01J31/18 ,  B01J31/12 ,  B01J8/10

Abstract: 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.

公开(公告)号：US11465138B2

公开(公告)日：2022-10-11

申请号：US16965586

申请日：2019-04-10

Applicant: LG Chem, LTD.

Inventor： Sunhwan Hwang ,  Kyong Yong Cha ,  Dong Hyun Ko ,  Ye Seul Hwang ,  Jun Kyu Han ,  Sang Jin Han ,  Seongmin Kim

IPC: B01J37/03 ,  B01J23/80 ,  B01J37/08 ,  C07C5/48 ,  C07C11/167

Abstract: A method for preparing a metal complex catalyst by (A) obtaining a precipitate by bringing a metal precursor solution comprising a zinc (Zn) precursor, a ferrite (Fe) precursor, and water into contact with a basic aqueous solution; (B) obtaining a zinc ferrite catalyst by filtering and calcining the precipitate; and (C) supporting an acid onto the zinc ferrite catalyst, and a metal complex catalyst prepared thereby.

公开(公告)号：US11446622B2

公开(公告)日：2022-09-20

申请号：US17274737

申请日：2020-08-12

Applicant: LG CHEM, LTD.

Inventor： Joo Young Cheon ,  Dong Hyun Ko ,  Jun Han Kang ,  Sang Jin Han ,  Hyun Jin Cho ,  Jae Kwon Jeoung

IPC: B01J8/06

Abstract: A socket-type fluid distributor for distributing and supplying a gas and/or liquid reactant into a reactor body. The socket-type fluid distributor includes: a distributor body, a bottom portion of which is inserted into the reactor body; a mixing flow path formed in a central portion of the distributor body such that the mixing flow path penetrates through the distributor body into the reactor body; a gas reactant input portion disposed above the distributor body and having a gas flow path; a liquid reactant input portion disposed between the distributor body and the gas reactant input portion and having a liquid flow path; and a flow control portion formed in the mixing flow path.

公开(公告)号：US11167271B2

公开(公告)日：2021-11-09

申请号：US16964571

申请日：2019-02-26

Applicant: LG Chem, LTD.

Inventor： Joohyuck Lee ,  Dong Hyun Ko ,  Kyong Yong Cha ,  Myungji Suh

IPC: B01J23/00 ,  B01J23/745 ,  B01J37/02 ,  C07C5/48 ,  C07C11/167

Abstract: The method for preparing a ferrite-based coating catalyst including mixing a support, a ferrite-based catalyst, and water in a coating machine which is a rotating body, in which a weight ratio of the water based on a total weight of the support is 0.15 to 0.3.

公开(公告)号：US10947174B2

公开(公告)日：2021-03-16

申请号：US16472493

申请日：2018-10-04

Applicant: LG CHEM, LTD.

Inventor： Dawon Jung ,  Sungshik Eom ,  Tae Yun Kim ,  Dong Hyun Ko ,  Mi Young Kim ,  Min Ji Choi ,  Taewoo Kim

IPC: C07C29/141 ,  C07C45/64

Abstract: A method for preparing trimethylolpropane, the method including: subjecting dimethylolbutanal (DMB) to a hydrogenation reaction in the presence of a metal catalyst and an alcohol solvent. During the hydrogenation reaction, a weight ratio of the alcohol solvent based to dimethylolbutanal is 2 to 10.

公开(公告)号：US10888844B2

公开(公告)日：2021-01-12

申请号：US16301403

申请日：2018-04-12

Applicant: LG CHEM, LTD.

Inventor： Myung Ji Suh ,  Dong Hyun Ko ,  Kyong Yong Cha ,  Dae Heung Choi ,  Ye Seul Hwang ,  Jun Kyu Han ,  Sun Hwan Hwang

IPC: B01J21/04 ,  B01J23/80 ,  B01J35/00 ,  B01J35/02 ,  B01J35/08 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/08 ,  C07C5/48 ,  C07C11/167

Abstract: 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 (AB2O4) according to Equation 1 of the present invention, wherein the metal oxide exhibits activity during oxidative dehydrogenation. Therefore, when the catalyst is used in oxidative dehydrogenation of butene, the conversion rate of butene and the selectivity and yield of butadiene may be greatly improved.

公开(公告)号：US10730809B2

公开(公告)日：2020-08-04

申请号：US16098077

申请日：2017-09-21

Applicant: LG CHEM, LTD.

Inventor： Myung Ji Suh ,  Dong Hyun Ko ,  Jun Han Kang ,  Kyong Yong Cha ,  Ye Seul Hwang ,  Jun Kyu Han ,  Sang Jin Han

IPC: C07C5/48 ,  B01J23/86 ,  B01J23/78 ,  B01J21/06 ,  B01J23/72 ,  B01J23/76 ,  B01J23/745 ,  B01J23/847 ,  B01J23/00 ,  B01J23/80 ,  B01J37/02 ,  B01J37/03 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08

Abstract: A method of preparing butadiene that includes supplying butene, oxygen, nitrogen, and steam into a reactor filled with a metal oxide catalyst, and performing an oxidative dehydrogenation reaction at a temperature of 300 to 450° C. as a reaction step; after the reaction step, maintaining supplying the butene, oxygen, nitrogen, and steam within a range within which the flow rate change of the butene, oxygen, nitrogen, and steam is less than ±40%, or stopping supplying the butene, and cooling the reactor to a temperature range of 200° C. or lower and higher than 70° C. as a first cooling step; and after the first cooling step, stopping supplying the butene, oxygen, nitrogen, and steam or stopping at least supplying the butene, and cooling the reactor to a temperature of 70° C. or lower as a second cooling step.

公开(公告)号：US10518250B2

公开(公告)日：2019-12-31

申请号：US15746758

申请日：2017-02-17

Applicant: LG CHEM, LTD.

Inventor： Dae Heung Choi ,  Dong Hyun Ko ,  Kyong Yong Cha ,  Myung Ji Suh ,  Ye Seul Hwang ,  Sun Hwan Hwang ,  Seong Min Kim ,  Jun Han Kang ,  Joo Hyuck Lee ,  Hyun Seok Nam ,  Sang Jin Han ,  Jun Kyu Han

IPC: B01J23/745 ,  B01J23/75 ,  B01J23/78 ,  B01J23/80 ,  B01J23/889 ,  B01J35/02 ,  B01J35/08 ,  B01J37/00 ,  B01J37/03 ,  B01J37/08

Abstract: The present invention relates to a ferrite-based catalyst composite, a method of preparing the same, and a method of preparing butadiene using the same. More particularly, the present invention provides a ferrite-based catalyst composite having a shape that allows effective dispersion of excess heat generated in a butadiene production process and prevention of catalyst damage and side reaction occurrence by reducing direct exposure of a catalyst to heat, a method of preparing the ferrite-based catalyst composite, and a method of preparing butadiene capable of lowering the temperature of a hot spot and reducing generation of Cox by allowing active sites of a catalyst to have a broad temperature gradient (profile) during oxidative dehydrogenation using the ferrite-based catalyst composite, and thus, providing improved process efficiency.