US 11,964,937 B2
(Meth)acrolein oxidation catalyst and preparation method thereof
Xin Wen, Shanghai (CN); Ge Luo, Shanghai (CN); Xinlei Jin, Shanghai (CN); Tonghao Wu, Shanghai (CN); Yan Zhuang, Shanghai (CN); Zhigang Qian, Shanghai (CN); and Xiaodong Chu, Shanghai (CN)
Assigned to Shanghai Huayi New Material Co., Ltd., Shanghai (CN)
Appl. No. 16/959,647
Filed by Shanghai Huayi New Material Co., Ltd., Shanghai (CN)
PCT Filed Jan. 17, 2019, PCT No. PCT/CN2019/072085
§ 371(c)(1), (2) Date Jul. 1, 2020,
PCT Pub. No. WO2019/134715, PCT Pub. Date Jul. 11, 2019.
Claims priority of application No. 201810001362.0 (CN), filed on Jan. 2, 2018.
Prior Publication US 2021/0078929 A1, Mar. 18, 2021
Int. Cl. C07C 51/25 (2006.01); B01J 21/06 (2006.01); B01J 21/18 (2006.01); B01J 27/199 (2006.01); B01J 35/00 (2006.01); B01J 35/06 (2006.01); B01J 37/00 (2006.01); B01J 37/04 (2006.01); B01J 37/08 (2006.01)
CPC C07C 51/252 (2013.01) [B01J 21/063 (2013.01); B01J 21/18 (2013.01); B01J 27/199 (2013.01); B01J 35/0013 (2013.01); B01J 35/06 (2013.01); B01J 37/0009 (2013.01); B01J 37/04 (2013.01); B01J 37/088 (2013.01)] 10 Claims
 
1. A heteropolyacid catalyst for preparing (meth)acrylic acid by oxidation of (meth)acrolein, wherein the catalyst has a composition represented by the following formula:
x(Mo12PaCsbVcDeOf)+tC/yZ
wherein Mo12PaCsbVcDeOf is a primary catalyst of heteropolyacid salt, C is a nanocarbon fiber additive, and Z is a support/heat conducting diluent;
Mo, P, Cs, V and O represent elements of molybdenum, phosphorus, cesium, vanadium and oxygen respectively;
D represents at least one element selected from the group consisting of copper, iron, magnesium, manganese, antimony, zinc, tungsten, silicon, nickel, and palladium;
Z is selected from the group consisting of SiC, SiO2, MoO3, WO3, TiO2, and mixtures thereof in any ratios;
a, b, c, e, and f represent the atomic proportions of the elements, wherein a=0.1-3, b=0.01-3, c=0.01-5, e=0.01-2, and f is an atomic proportion of oxygen needed to satisfy the valences of the above components;
x, y represent the weights of the primary catalyst and the support/heat-conducting diluent Z, wherein y/x=11.1-50%;
t represents a weight of the nanocarbon fiber, t/x=3-10%; and
wherein the nanocarbon fiber has a diameter between 50-200 nm.