公开(公告)号：US20190262800A1

公开(公告)日：2019-08-29

申请号：US16319712

申请日：2017-08-08

申请人： ASAHI KASEI KABUSHIKI KAISHA

发明人： Dai NAGATA ,  Satoshi MIIKE

IPC分类号： B01J23/30 ,  B01J21/08 ,  B01J35/02 ,  B01J37/04 ,  B01J37/02 ,  B01J37/08 ,  C07C253/24 ,  C07C255/08 ,  C07C51/215 ,  C07C57/04

摘要： The present invention provides a method for producing an oxide catalyst containing antimony, comprisinga step (A) of obtaining the oxide catalyst using antimony particles containing a diantimony trioxide as a source of the antimony,wherein an abundance of a pentavalent antimony in a surface layer of the antimony particle to be measured in XPS analysis is less than 70 atom %, andthe antimony particle has an average particle size of 1.2 μm or less.

公开(公告)号：US20180085737A1

公开(公告)日：2018-03-29

申请号：US15563381

申请日：2016-03-30

申请人： ASAHI KASEI KABUSHIKI KAISHA

发明人： Satoshi MIIKE ,  Eri TATENO ,  Yusuke ISHII

IPC分类号： B01J23/30 ,  C07C253/24 ,  B01J23/00 ,  B01J37/04 ,  B01J37/08 ,  B01J35/02

CPC分类号： B01J23/30 ,  B01J23/002 ,  B01J35/023 ,  B01J37/04 ,  B01J37/08 ,  B01J2523/00 ,  C07B61/00 ,  C07C253/24 ,  C07C255/08 ,  Y02P20/52 ,  B01J2523/3712 ,  B01J2523/53 ,  B01J2523/55 ,  B01J2523/56 ,  B01J2523/68 ,  B01J2523/69

摘要： The present invention provides a method for producing an oxide catalyst comprising Mo, V, Sb, and Nb for use in a gas-phase catalytic oxidation reaction or a gas-phase catalytic ammoxidation reaction of propane or isobutane, the method comprising: a preparation step of preparing a first aqueous mixed solution containing Mo, V, and Sb; a mixing step of mixing the first aqueous mixed solution with a support raw material comprising silica sol, and a Nb raw material to obtain a second aqueous mixed solution; a drying step of drying the second aqueous mixed solution to obtain a dry powder; and a calcination step of calcining the dry powder to obtain the oxide catalyst, wherein the support raw material comprises 25% by mass or more, based on SiO2, of the silica sol having an average primary particle size of 3.0 nm or larger and smaller than 11 nm based on a total amount of the support raw material, and the silica sol comprises 55% or more of silica sol particles having a primary particle size of smaller than 11 nm.