Shanghai Huayi Acrylic Acid Co., Ltd.

Kaimin Shi

Jian Wang

Yan Zhuang

Xiaodong Chu

Jingming Shao

Jianxue Ma

Xuemei Li

Kun Jiao

A method of preparing a catalyst for producing acrolein by oxidation of propylene at high space velocity, said catalyst is a Mo&#x2014;Bi&#x2014;Fe&#x2014;Co based composite metal oxide. Producing unsaturated aldehyde via partial oxidation of lower unsaturated olefin at high space velocity using said catalyst is suitable for process with or without off-gas recirculating. Said catalyst is prepared by co-precipitation, the reaction conditions for using said catalyst to produce unsaturated aldehyde are, the space velocity of unsaturated lower olefin relative to catalyst being 120&#x2dc;200 h-1(STP), reaction temperature being 300&#x2dc;420&#xb0; C. and absolute pressure being 0.1&#x2dc;0.5 MPa; a single-stage unsaturated lower olefin conversion ratio of greater than 98.0% and carbon oxide yield of less than 3.3% with an overall yield of unsaturated lower aldehyde and acid of greater than 94.0% are obtained. The process to prepare the said catalyst is simple, easy to be repeated, and capable of industrial scale-up.

Catalyst for producing unsaturated aldehyde by oxidation of lower olefin at high space velocity

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Shanghai, China

Kaimin Shi