公开(公告)号：US09624150B2

公开(公告)日：2017-04-18

申请号：US14917167

申请日：2014-09-17

Applicant: LG CHEM, LTD.

Inventor： Hyun Nam ,  Jin Soo Kim ,  Yong Jin Choe ,  Sun Hyuk Choi

IPC: C07C29/141 ,  C07C29/34 ,  C07C29/14 ,  B01J19/24

CPC classification number: C07C29/141 ,  B01J19/24 ,  B01J2219/24 ,  C07C29/14 ,  C07C29/34 ,  C07C31/12

Abstract: Provided are a method of preparing an alkanol and a device for preparing the same. According to the method and device, economic feasibility and stability of a preparation process may be enhanced, and mass production of an alkanol may be performed.

公开(公告)号：US10266475B2

公开(公告)日：2019-04-23

申请号：US15752181

申请日：2017-01-31

Applicant: LG CHEM, LTD. ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Won Jae Lee ,  Dong Su Song ,  Yong Jin Choe ,  Hyun Joo Lee ,  Min Su Kim

IPC: C07C51/25 ,  C07C51/44 ,  C07C51/50 ,  C07C57/04 ,  B01J23/44 ,  B01J23/58 ,  B01J23/60 ,  B01J23/66 ,  B01J23/68 ,  B01J23/74 ,  B01J23/78 ,  B01J23/80 ,  B01J23/89 ,  B01J35/00 ,  B01J35/02 ,  B01J35/08 ,  B01J37/00 ,  B01J37/02 ,  B01J23/46 ,  B01J23/52 ,  B01J37/16

Abstract: A method for preparing acrylic acid, more specifically, to a method for preparing acrylic acid under a neutral condition at high yield in a short time without using a base, unlike the prior art in which a base is essentially used. The acrylic acid is produced using a supported catalyst having a specific composition when preparing acrylic acid by oxidation of allyl alcohol. Particularly, the preparation method can recover acrylic acid rather than acrylic acid salt as a final product, and thus has an advantage that the overall process cost can be reduced by eliminating essential processes in the prior art, such as ion exchange after the acidification process required for the conversion of acrylic acid salt to acrylic acid.

公开(公告)号：US09845275B2

公开(公告)日：2017-12-19

申请号：US15028286

申请日：2015-01-15

Applicant: LG CHEM, LTD.

Inventor： Ji Eun Kim ,  Won Jae Lee ,  Yong Jin Choe ,  Won Jong Kwon ,  Hyun Nam ,  Kwon Nam Sohn

IPC: C07C27/12 ,  D01F9/15 ,  C10C3/04

CPC classification number: C07C27/12 ,  C10C3/04 ,  D01F9/15

Abstract: Disclosed are a method of preparing polyaromatic oxide and polyaromatic oxide prepared thereby, wherein the method includes (a) placing a plurality of kinds of polyaromatic hydrocarbons and water in a reactor and then stirring them; (b) increasing the temperature inside the reactor to 150 to 300° C. and then feeding a gas containing 10 wt % or more of oxygen into the reactor to increase the partial pressure of oxygen inside the reactor to 2 to 30 bar; and (c) reacting the plurality of kinds of polyaromatic hydrocarbons with oxygen to oxidize the plurality of kinds of polyaromatic hydrocarbons.