公开(公告)号：US20180237372A1

公开(公告)日：2018-08-23

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 ,  B01J23/44 ,  B01J23/52

CPC classification number: C07C51/25 ,  B01J23/44 ,  B01J23/46 ,  B01J23/52 ,  B01J23/58 ,  B01J23/60 ,  B01J23/66 ,  B01J23/682 ,  B01J23/685 ,  B01J23/686 ,  B01J23/688 ,  B01J23/74 ,  B01J23/78 ,  B01J23/80 ,  B01J23/89 ,  B01J23/8906 ,  B01J23/8913 ,  B01J23/892 ,  B01J23/8946 ,  B01J23/8953 ,  B01J35/0013 ,  B01J35/006 ,  B01J35/023 ,  B01J35/08 ,  B01J37/0072 ,  B01J37/009 ,  B01J37/0211 ,  B01J37/16 ,  B01J2523/00 ,  C07C51/44 ,  C07C51/50 ,  C07C57/04 ,  B01J2523/19 ,  B01J2523/22 ,  B01J2523/824

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.