The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2013
Filed:
May. 26, 2011
Jian Wang, Shanghai, CN;
Xuemei LI, Shanghai, CN;
Yan Zhuang, Shanghai, CN;
Kaimin Shi, Shanghai, CN;
Kun Jiao, Shanghai, CN;
Jianxue MA, Shanghai, CN;
Xiaodong Chu, Shanghai, CN;
Jingming Shao, Shanghai, CN;
Jian Wang, Shanghai, CN;
Xuemei Li, Shanghai, CN;
Yan Zhuang, Shanghai, CN;
Kaimin Shi, Shanghai, CN;
Kun Jiao, Shanghai, CN;
Jianxue Ma, Shanghai, CN;
Xiaodong Chu, Shanghai, CN;
Jingming Shao, Shanghai, CN;
Shanghai Huayi Acrylic Acid Co., Ltd., Shanghai, CN;
Abstract
A method of preparing a catalyst for producing acrolein by oxidation of propylene at high space velocity, said catalyst is a Mo—Bi—Fe—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˜200 h-1(STP), reaction temperature being 300˜420° C. and absolute pressure being 0.1˜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.