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:
Dec. 20, 2016
Filed:
Dec. 04, 2015
Shanghai Huayi New Material Co., Ltd., Shanghai, CN;
Shanghai Huayi Acrylic Acid Co., Ltd., Shanghai, CN;
Xiaoqi Zhao, Shanghai, CN;
Ge Luo, Shanghai, CN;
Yong Chen, Shanghai, CN;
Chunhua Qin, Shanghai, CN;
Tonghao Wu, Shanghai, CN;
Yan Zhuang, Shanghai, CN;
Jianxue Ma, Shanghai, CN;
Xiaodong Chu, Shanghai, CN;
Jinhua Ji, Shanghai, CN;
Shanghai Huayi New Material Co., Ltd, Shanghai, CN;
Shanghai HuaYi Acrylic Acid Co. Ltd., Shanghai, CN;
Abstract
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.