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1. (WO2018030384) METHOD FOR PRODUCING OXIDE CATALYST, METHOD FOR PRODUCING UNSATURATED NITRILE AND METHOD FOR PRODUCING UNSATURATED ACID

Pub. No.:    WO/2018/030384    International Application No.:    PCT/JP2017/028716
Publication Date: Fri Feb 16 00:59:59 CET 2018 International Filing Date: Wed Aug 09 01:59:59 CEST 2017
IPC: B01J 23/30
C07C 253/24
C07C 255/08
C07B 61/00
Applicants: ASAHI KASEI KABUSHIKI KAISHA
旭化成株式会社
Inventors: NAGATA, Dai
永田 大
MIIKE, Satoshi
三池 智士
Title: METHOD FOR PRODUCING OXIDE CATALYST, METHOD FOR PRODUCING UNSATURATED NITRILE AND METHOD FOR PRODUCING UNSATURATED ACID
Abstract:
The present invention provides a method for producing an oxide catalyst containing antimony, which comprises a step (A) for obtaining an oxide catalyst with use of antimony particles containing diantimony trioxide as the antimony source, and wherein: the abundance ratio of pentavalent antimony in the surface layers of the antimony particles as determined by XPS analysis is less than 70% by atom; and the average particle diameter of the antimony particles is 1.2 μm or less.