Shanghai Huayi Acrylic Acid Co., Ltd.

Other

Shanghai Huayi New Material Co., Ltd.

Chunhua Qin

Yan Zhuang

Jianxue Ma

Ge Luo

Xiaodong Chu

Tonghao Wu

Jinhua Ji

Yong Chen

Xin Wen

Xiaodong Zhu

Jingming Shao

Xinlei Jin

Xiaoqi Zhao

Xuemei Li

Kun Jiao

Shiqiang Feng

Disclosed is a method for preparing a heteropolyacid salt catalyst, comprising dissolving the lead compounds for each element to prepare a suspension and dispersion slurry of catalyst precursor, which comprises all of the catalyst components; drying the catalyst precursor, mixing them with an organic compound, molding, and calcining to produce the catalyst.

Heteropolyacid salt catalysts and their preparation method

A method for preparing methacrolein from t-butanol, specifically a method for preparing methacrolein by using t-butanol as a starting material, is disclosed, comprising passing the starting material through a fixed bed reactor filled with catalyst, wherein the fixed bed reactor is divided to n reaction zones from the inlet of the starting material to the outlet of the starting material and each zone is filled with catalysts of different catalytic activities; wherein the catalytic activity of the catalyst in the first reaction zone is higher than the catalytic activity of the catalyst in the second reaction zone, and the catalytic activity of the catalyst is gradually increased from the second reaction zone to the last reaction zone; and n is an integer between 3 to 10.

Methods for preparing methacrolein from t-butanol

The present invention provides a complex oxide catalyst whose general formula is MoVCuWXYO/Z. reducing agent needs to be added into the catalyst during the preparation process of the active component of the catalyst and (or) molding process of the catalyst. Specifically, X is at least one selected from a group consisting of Nb, Sb, Sr, Ba and Te; Y is at least one selected from a group consisting of La, Ce, Nd, Sm and Cs; 'a' is ranging from 2 to 8; 'b' is ranging from 1 to 6; &#x201c;c&#x201d; is ranging from 0.5 to 5; &#x201c;d&#x201d; is ranging from 0.01 to 4; &#x201c;e&#x201d; is ranging from 0.01 to 4; f is determined by the oxidation state of the component element; Z is silicon powder; the reducing agent is C2&#x2dc;C6 diol or polyol.

Preparation process of a complex oxide catalyst and application thereof to the synthesis of the acrylic acid

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Shanghai, China

Chunhua Qin