公开(公告)号：US11858874B2

公开(公告)日：2024-01-02

申请号：US17761149

申请日：2021-08-30

申请人： LG CHEM, LTD.

发明人： Jaekwon Jeoung ,  Dong Hyun Ko ,  Sunhwan Hwang ,  Jun Han Kang ,  Sang Jin Han

IPC分类号： C07C1/24 ,  C07C15/46

CPC分类号： C07C15/46 ,  C07C1/24

摘要： 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 (H2O), 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.

公开(公告)号：US20210387152A1

公开(公告)日：2021-12-16

申请号：US17274737

申请日：2020-08-12

申请人： LG CHEM, LTD.

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

IPC分类号： B01J8/06

摘要： 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：US10343958B2

公开(公告)日：2019-07-09

申请号：US15561316

申请日：2017-03-30

申请人： LG CHEM, LTD.

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

IPC分类号： C07C5/48 ,  B01J35/04 ,  B01J23/80 ,  B01J37/02 ,  B01J37/08 ,  B01J37/03 ,  B01J35/02 ,  B01J37/00 ,  B01J23/74 ,  B01J23/78 ,  B01J23/84 ,  C07C7/20 ,  C07C11/08

摘要： The present invention relates to a catalyst for coating a surface of a porous material and a method of treating the surface of the porous material. More particularly, when the catalyst for coating a surface of a porous material and the method of treating the surface of the porous material of the present invention are used for butadiene synthesis reaction under high gas space velocity and high pressure conditions, heat generation may be easily controlled and differential pressure may be effectively alleviated, thereby providing improved reactant conversion rate and product selectivity.

公开(公告)号：US10946364B2

公开(公告)日：2021-03-16

申请号：US16327151

申请日：2018-04-12

申请人： LG CHEM, LTD.

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

IPC分类号： 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

摘要： 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：US09592496B2

公开(公告)日：2017-03-14

申请号：US14763104

申请日：2014-11-14

申请人： LG CHEM, LTD.

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

IPC分类号： B01J23/02 ,  B01J23/18 ,  B01J23/28 ,  B01J23/31 ,  C07C5/48 ,  C07C11/16 ,  C07C11/167 ,  B01J27/236 ,  B01J37/04 ,  B01J37/02 ,  B01J37/08 ,  C01F7/00 ,  B01J23/00 ,  B01J23/887 ,  B01J35/00 ,  B01J37/03 ,  B01J37/00 ,  B01J35/10

CPC分类号： B01J27/236 ,  B01J23/002 ,  B01J23/007 ,  B01J23/31 ,  B01J23/8876 ,  B01J35/002 ,  B01J35/1009 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1042 ,  B01J37/0009 ,  B01J37/0036 ,  B01J37/0236 ,  B01J37/03 ,  B01J37/04 ,  B01J37/08 ,  B01J2523/00 ,  C01F7/005 ,  C07C5/48 ,  C07C2523/28 ,  C07C2523/31 ,  C07C11/167 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/22 ,  B01J2523/31

摘要： Disclosed are a catalyst composition for oxidative dehydrogenation and a method of preparing the same. More particularly, disclosed is a catalyst composition comprising a multi-ingredient-based metal oxide catalyst and a mixed metal hydroxide. The catalyst composition and the method of preparing the same according to the present disclosure may prevent loss occurring in a filling process due to superior mechanical durability and wear according to long-term use, may inhibit polymer formation and carbon deposition during reaction, and may provide a superior conversion rate and superior selectivity.

摘要翻译： 公开了用于氧化脱氢的催化剂组合物及其制备方法。 更具体地，公开了包含多成分基金属氧化物催化剂和混合金属氢氧化物的催化剂组合物。 根据本公开的催化剂组合物及其制备方法可以防止由于优异的机械耐久性和根据长期使用的磨损而在填充过程中发生的损失，可能抑制反应期间的聚合物形成和碳沉积，并且可以提供 转化率高，选择性好。

公开(公告)号：US11865522B2

公开(公告)日：2024-01-09

申请号：US17293586

申请日：2020-07-13

申请人： LG CHEM, LTD.

发明人： Sang Jin Han ,  Dong Hyun Ko ,  Kyong Yong Cha ,  Ye Seul Hwang ,  Sunhwan Hwang

IPC分类号： B01J23/80 ,  B01J23/00 ,  B01J37/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/06 ,  B01J37/08 ,  C07C5/48

CPC分类号： B01J23/80 ,  B01J23/005 ,  B01J37/009 ,  B01J37/0236 ,  B01J37/031 ,  B01J37/06 ,  B01J37/08 ,  C07C5/48 ,  C07C2523/80

摘要： 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 (HNO3) and hydrocarbon acid.

公开(公告)号：US11247195B2

公开(公告)日：2022-02-15

申请号：US16307676

申请日：2018-04-26

申请人： LG CHEM, LTD.

发明人： Sang Jin Han ,  Dong Hyun Ko ,  Kyong Yong Cha ,  Jun Kyu Han ,  Sun Hwan Hwang

IPC分类号： B01J23/60 ,  B01J23/80 ,  B01J35/00 ,  B01J37/03 ,  C01G49/06 ,  C07C5/48 ,  C07C11/167 ,  C01G49/00 ,  C01B13/36 ,  B01J23/00 ,  B01J37/04 ,  B01J23/76

摘要： A method of preparing a catalyst for oxidative dehydrogenation that includes coprecipitation and injecting inert gas or air at a specific time point to reduce the ratio of an inactive α-Fe2O3 crystal structure, thereby improving the activity of the catalyst. Also provided is a method of performing oxidative dehydrogenation using the catalyst. When oxidative dehydrogenation of butene is performed using the catalyst, side reaction may be reduced, and selectivity for butadiene may be improved, providing butadiene with high productivity.

公开(公告)号：US11040335B2

公开(公告)日：2021-06-22

申请号：US16480977

申请日：2018-12-19

申请人： LG CHEM, LTD.

发明人： Jun Kyu Han ,  Dong Hyun Ko ,  Kyong Yong Cha ,  Sang Jin Han ,  Sunhwan Hwang ,  Seongmin Kim

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

摘要： Provided is a method for producing a zinc ferrite catalyst, the method comprising: preparing a zinc precursor solution; preparing a ferrite precursor solution; obtaining a first precipitate by bringing the zinc precursor solution into contact with an alkaline solution; obtaining a second precipitate by adding the ferrite precursor solution to the first precipitate; and drying and firing the second precipitate after filtering the second precipitate.

公开(公告)号：US10994262B2

公开(公告)日：2021-05-04

申请号：US15765445

申请日：2017-05-18

申请人： LG CHEM, LTD.

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

IPC分类号： B01J23/00 ,  B01J23/72 ,  B01J23/745 ,  B01J23/75 ,  B01J23/755 ,  B01J23/78 ,  B01J23/825 ,  B01J23/83 ,  B01J23/847 ,  B01J23/86 ,  B01J23/889 ,  B01J21/04 ,  B01J27/224 ,  B01J37/02 ,  C07C5/48 ,  C07C11/167 ,  B01J35/02 ,  B01J23/02 ,  B01J23/26 ,  B01J37/00 ,  B01J23/22 ,  B01J37/08 ,  B01J23/34 ,  B01J23/10 ,  B01J23/08 ,  B82Y40/00 ,  B82Y30/00 ,  B01J35/00 ,  B01J23/80 ,  B01J23/06 ,  B01J21/06 ,  B01J21/08 ,  B01J21/16 ,  B01J27/24 ,  B01J35/08

摘要： Disclosed are a catalyst for oxidative dehydrogenation and a method of preparing the same. More particularly, a catalyst for oxidative dehydrogenation of butene having a high butene conversion rate and superior side reaction inhibition effect and thus having high reactivity and high selectivity for a product by preparing metal oxide nanoparticles and then fixing the prepared metal oxide nanoparticles to a support, and a method of preparing the same are provided.

公开(公告)号：US11370730B2

公开(公告)日：2022-06-28

申请号：US16771141

申请日：2019-02-01

申请人： LG CHEM, LTD.

发明人： Hyunseok Nam ,  Jun Han Kang ,  Kyong Yong Cha ,  Jaewon Jeong ,  Dong Hyun Ko ,  Jun Kyu Han ,  Sang Jin Han ,  Kyung Moo Lee ,  Joohyuck Lee ,  Daeheung Choi ,  Myungji Suh ,  Ye Seul Hwang ,  Sunhwan Hwang ,  Seongmin Kim

IPC分类号： C07C5/48 ,  C07C7/04 ,  B01D5/00

摘要： The present specification provides a method for preparing 1,3-butadiene, the method comprising: (A) obtaining a first product comprising a light component, 1,3-butadiene, and a heavy component from a reactant comprising butene; (B) separating the heavy component from a second product comprising the 1,3-butadiene and the light component by condensing the heavy component after heat exchanging the first product; and (C) separating concentrated heavy component by reboiling the condensed heavy component.