公开(公告)号：US09925525B2

公开(公告)日：2018-03-27

申请号：US14427207

申请日：2014-11-18

Applicant: LG CHEM, LTD.

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

IPC: B01J23/887 ,  C07C5/48 ,  B01J37/02 ,  B01J29/04 ,  B01J35/02 ,  B01J23/31 ,  B01J23/00 ,  B01J29/076 ,  B01J29/26 ,  B01J29/48 ,  B01J29/78

CPC classification number: B01J23/8876 ,  B01J23/002 ,  B01J23/31 ,  B01J29/04 ,  B01J29/076 ,  B01J29/26 ,  B01J29/48 ,  B01J29/7807 ,  B01J29/7815 ,  B01J35/026 ,  B01J37/0221 ,  B01J37/0236 ,  B01J37/0246 ,  B01J2229/64 ,  B01J2523/00 ,  C07C5/48 ,  C07C2523/04 ,  C07C2523/28 ,  C07C2523/31 ,  C07C2523/745 ,  C07C2523/75 ,  C07C2523/887 ,  C07C11/167 ,  B01J2523/13 ,  B01J2523/15 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845

Abstract: The present invention relates to a bismuth molybdate-based composite oxide catalyst having a microporous zeolite coating layer on the surface thereof and thus having high selectivity for 1,3-butadiene, a method of preparing the same, and a method of preparing 1,3-butadiene using the same. The catalyst has a microporous zeolite coating layer, and thus enables only gaseous products (light) to selectively pass through the zeolite coating layer, improving selectivity for 1,3-butadiene.

公开(公告)号：US09914682B2

公开(公告)日：2018-03-13

申请号：US14906155

申请日：2015-09-15

Applicant: LG CHEM, LTD.

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

IPC: C07C29/141 ,  B01J23/78 ,  B01J19/24 ,  B01J21/08

CPC classification number: C07C29/141 ,  B01J19/24 ,  B01J21/08 ,  B01J23/78 ,  B01J2219/00103 ,  C07C31/20

Abstract: Disclosed are a highly efficient neopentyl glycol preparation method and a device therefor. The method includes adding a hydroxypivaldehyde solution and hydrogen to a hydrogenation reactor that includes a hydrogenation catalyst. The hydroxypivaldehyde solution includes 6 to 30% by weight of hydroxypivaldehyde, 35 to 70% by weight of neopentyl glycol, 10 to 30% by weight of alcohol, and 10 to 30% by weight of water.The neopentyl glycol preparation method does not require separate heating in a section of a feed vessel to an inlet of a hydrogenation reactor unlike conventional technologies to save energy, and, at the same time, by-products with a high boiling point are not generated in the section to prevent poisoning of a hydrogenation catalyst in a reactor due to the by-products with a high boiling point and increase a hydrogenation yield, and a device therefor can be provided.

公开(公告)号：US09751819B2

公开(公告)日：2017-09-05

申请号：US15035430

申请日：2015-11-25

Applicant: LG CHEM, LTD.

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

IPC: C07C5/327 ,  C07C5/333 ,  C07C5/48 ,  B01J23/00 ,  B01J23/887

CPC classification number: C07C5/48 ,  B01J23/00 ,  B01J23/002 ,  B01J23/8876 ,  B01J35/002 ,  B01J37/031 ,  B01J2523/00 ,  C07C2523/02 ,  C07C2523/887 ,  C07C11/167 ,  B01J2523/13 ,  B01J2523/15 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845

Abstract: The present invention relates to a method of preparing butadiene. More particularly, the present invention relates to a method of preparing butadiene by feeding butene and oxygen into a reactor containing a composite metal oxide catalyst and performing oxidative dehydrogenation, wherein a mole ratio of the oxygen to the butene is 1.8 to 2.2.In accordance with the present invention, a method of preparing butadiene to secure long-term operation stability by maintaining the intensity of a catalyst despite oxidative dehydrogenation and not to decrease selectivity due to less side reaction is provided.

公开(公告)号：US12194447B2

公开(公告)日：2025-01-14

申请号：US18513178

申请日：2023-11-17

Applicant: LG CHEM, LTD.

Inventor： Myungji Suh ,  Dong Hyun Ko ,  Minkee Choi ,  Kyunglim Hyun

IPC: B01J31/06 ,  B01J23/44 ,  C07C5/09 ,  C08F26/06

Abstract: 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.

公开(公告)号：US11660584B2

公开(公告)日：2023-05-30

申请号：US17117406

申请日：2020-12-10

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

CPC classification number: B01J23/80 ,  B01J21/04 ,  B01J35/0026 ,  B01J35/023 ,  B01J35/026 ,  B01J35/08 ,  B01J35/1076 ,  B01J37/0018 ,  B01J37/0036 ,  B01J37/0221 ,  B01J37/0236 ,  B01J37/038 ,  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:

X wt %+Y wt %=100 wt %,  



wherein X is a content of AB2O4 and is 5 or more and less than 30, and Y is a content of the porous support and is more than 70 and 95 or less,

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：US11447435B2

公开(公告)日：2022-09-20

申请号：US17050031

申请日：2019-07-10

Applicant: LG CHEM, LTD.

Inventor： Myungji Suh ,  Jun Han Kang ,  Kyong Yong Cha ,  Dong Hyun Ko

IPC: C07C5/48 ,  B01J23/31 ,  B01J23/80 ,  B01J37/02 ,  B01J37/03

Abstract: An exemplary embodiment of the present application provides a method for preparing butadiene, the method comprising a process of performing an oxidative dehydrogenation reaction by introducing a reactant comprising butene, oxygen, nitrogen, and steam into a reactor which is filled with a catalyst, in which during a first start-up of the oxidative dehydrogenation reaction, the oxygen is introduced into the reactor before the butene, or the oxygen is introduced into the reactor simultaneously with the butene.

公开(公告)号：US20220241767A1

公开(公告)日：2022-08-04

申请号：US17613486

申请日：2020-12-24

Applicant: LG CHEM, LTD.

Inventor： Sunhwan Hwang ,  Jun Kyu Han ,  San Jin Han ,  Dong Hyun Ko ,  Kyoung Yong Cha

IPC: B01J37/03 ,  B01J37/06 ,  B01J23/80 ,  C07C5/48

Abstract: 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.

公开(公告)号：US11185852B2

公开(公告)日：2021-11-30

申请号：US16306839

申请日：2018-02-02

Applicant: LG CHEM, LTD.

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

IPC: C07C45/50 ,  B01J31/00 ,  B01J31/18 ,  B01J31/20 ,  B01J31/22

Abstract: The present invention relates to a catalyst composition for hydroformylation and a method of preparing an aldehyde using the same. More specifically, the present invention provides a catalyst composition for hydroformylation including a specific phosphite-based ligand and a transition metal compound in a specific amount range, thereby being capable of greatly lowering a use amount of an expensive transition metal compound and exhibiting excellent catalyst activity or stability. In addition, by using the catalyst composition in hydroformylation, excellent reaction efficiency may be provided and iso-aldehyde may be generated in high yield.

公开(公告)号：US10946364B2

公开(公告)日：2021-03-16

申请号：US16327151

申请日：2018-04-12

Applicant: LG CHEM, LTD.

Inventor： Myungji Suh ,  Dong Hyun Ko ,  Jun Han Kang ,  Hyunseok Nam ,  Sang Jin Han ,  Seongmin Kim

IPC: B01J23/80 ,  B01J8/02 ,  B01J35/08 ,  C07C5/48 ,  B01J21/00 ,  B01J21/04 ,  B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/08 ,  C07C11/167

Abstract: Provided is a catalyst system for oxidative dehydrogenation, a reactor for oxidative dehydrogenation including the catalyst system, and a method of performing oxidative dehydrogenation using the reactor. In the catalyst system, a fixed-bed reactor is filled with a catalyst for oxidative dehydrogenation in an n-stage structure (n being an integer of 2 or more), wherein each stage of the n-stage structure satisfies Equations 1 and 2 as claimed so that the concentration of an active ingredient included in the catalyst gradually increases in the direction in which reactants are fed into the reactor. Heat generated inside the reactor may be effectively controlled during oxidative dehydrogenation, thereby improving conversion rate, selectivity, and yield. In addition, catalyst deterioration may be reduced, thereby improving long-term stability of the catalyst.

公开(公告)号：US10913055B2

公开(公告)日：2021-02-09

申请号：US15765979

申请日：2017-07-04

Applicant: LG CHEM, LTD.

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

IPC: C07C47/02 ,  B01J31/18 ,  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.