公开(公告)号：US20230398523A1

公开(公告)日：2023-12-14

申请号：US18035824

申请日：2021-08-03

Applicant: SHOWA DENKO K.K.

Inventor： Kazuhiro KITAGAWA ,  Yasuhiro HOSOGI ,  Yasuhiro IWAMA ,  Kazuki UMEHARA

IPC: B01J23/89 ,  B01J31/04 ,  B01J37/02 ,  B01J37/16 ,  C07C67/055

CPC classification number: B01J23/8926 ,  B01J31/04 ,  B01J37/024 ,  B01J37/0205 ,  B01J37/0207 ,  B01J37/16 ,  B01J37/0219 ,  B01J37/0217 ,  C07C67/055

Abstract: A method for producing a vinyl acetate production catalyst containing a carrier, copper, palladium, gold, and an acetate, the method including in the following order: step 1) a step for impregnating the carrier with an alkaline solution; step 2) a step for contact-impregnating the carrier with a solution containing a compound containing copper, a compound containing palladium, and a compound containing gold; step 3) a step for performing reduction treatment; and step 4) a step for causing the carrier to carry the acetate.