公开(公告)号：US20220251009A1

公开(公告)日：2022-08-11

申请号：US17595722

申请日：2021-01-08

Applicant: SHOWA DENKO K.K.

Inventor： Gen INOUE ,  Toshihiro KIMURA ,  Masafumi KOYANO

IPC: C07C29/04 ,  B01J23/30

Abstract: A method for producing an alcohol by hydrating an olefin using a heteropolyacid catalyst is provided, in which the catalyst can be stably used over a long period. The method is for producing an alcohol by supplying water and an olefin having 2-5 carbon atoms to a reactor and hydrating the olefin in a gas phase using a solid acid catalyst loaded with a heteropolyacid or a salt thereof, and is characterized in that a raw-material mixture to be supplied to the reactor has an aldehyde compound content of 70 mol ppm or less.

公开(公告)号：US20210380509A1

公开(公告)日：2021-12-09

申请号：US17288382

申请日：2019-10-28

Applicant: SHOWA DENKO K.K.

Inventor： Wataru OGUCHI ,  Gen INOUE ,  Toshihiro KIMURA ,  Masafumi KOYANO ,  Takuya KUZUTANI

IPC: C07C29/17 ,  B01J21/08 ,  B01J37/08 ,  B01J37/04 ,  B01J23/30 ,  B01J35/10

Abstract: A method and catalyst for producing an alcohol, which method includes supplying water and a C2-C5 olefin to a reactor and performing hydration in a gas phase using a solid acid catalyst. The solid acid catalyst is one in which a heteropolyacid or a salt thereof is supported on a silica carrier. The silica carrier is obtained by kneading a fumed silica obtained by a combustion method, a silica gel obtained by a gel method, and a colloidal silica obtained by a sol-gel method or a water glass method; molding the resulting kneaded product; and calcining the resulting molded body.

公开(公告)号：US20200238255A1

公开(公告)日：2020-07-30

申请号：US16639922

申请日：2018-09-03

Applicant: SHOWA DENKO K.K.

Inventor： Wataru OGUCHI ,  Katsuhiko YAMASHITA ,  Toshihiro KIMURA ,  Daiki SHIMONO

IPC: B01J21/08 ,  B01J6/00 ,  B01J35/10 ,  B01J35/00 ,  B01J35/02 ,  C01B33/14 ,  B01J37/04

Abstract: A method for producing the silica carrier which includes kneading fumed silica obtained by a combustion method, silica gel obtained by a gel method, and colloidal silica obtained by a sol-gel method or a water glass method, molding the resulting kneaded product, and calcining the resulting molded body. The silica carrier has, in the measurement of pore size distribution, mesopores with a pore size of 2 to 50 nm and macropores with a pore size of more than 50 nm and 1,000 nm or less.

公开(公告)号：US20220227691A1

公开(公告)日：2022-07-21

申请号：US17615436

申请日：2021-03-25

Applicant: SHOWA DENKO K.K.

Inventor： Masafumi KOYANO ,  Toshihiro KIMURA ,  Gen INOUE

IPC: C07C29/04 ,  B01J21/08 ,  B01J23/30

Abstract: A method for producing an alcohol by hydrating an olefin using a heteropolyacid catalyst is provided, in which an alcohol having high product purity can be stably produced over a long period of time. The method is for producing an alcohol by supplying a raw material mixture comprising water and an olefin having a carbon atom number of X, wherein X is an integer of 2 to 5, to a reactor and subjecting them to a hydration reaction in a gas phase using a solid acid catalyst on which a heteropolyacid or a salt thereof is supported to obtain a reaction product, wherein the content of an impurity olefin having a carbon atom number of Y, wherein Y is an integer of 2 to 6 and Y and X are different, contained in the raw material mixture is 700 mol ppm or less.