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. 19, 2017
Filed:
Aug. 05, 2014
Xi'an Modern Chemistry Research Institute, Shaanxi, CN;
Jian Lu, Shaanxi, CN;
Bo Wang, Shaanxi, CN;
Yue Qin, Shaanxi, CN;
Wei Mao, Shaanxi, CN;
Liangang Kou, Shaanxi, CN;
Zhenhua Zhang, Shaanxi, CN;
Fei He, Shaanxi, CN;
Wei Zhang, Shaanxi, CN;
Hui Ma, Shaanxi, CN;
Yangbo Ma, Shaanxi, CN;
Zhijun Hao, Shaanxi, CN;
Chunying Li, Shaanxi, CN;
Yongmei Du, Shaanxi, CN;
Fengxian Li, Shaanxi, CN;
Sheng Han, Shaanxi, CN;
XI'AN MODERN CHEMISTRY RESEARCH INSTITUTE, Shaanxi, CN;
Abstract
Disclosed in the present invention is a chromium-free catalyst for gas-phase fluorination and an application thereof. The precursor of the related chromium-free catalyst for gas-phase fluorination consists of a compound containing iron element, a compound containing rare earth metal element and a compound containing element A, wherein element A is one selected from Ca, Al, Mg and Ti, the precursor is subjected to calcination and fluorination treatment to obtain the chromium-free catalyst for gas-phase fluorination. The precursor of the catalyst is calcined at 400-500° C. and fluorinated with hydrogen fluoride at 350-450° C. to obtain the chromium-free fluorinated catalyst. The catalyst has characteristics of being chromium-free and environment-friendly, good catalytic activity and long life etc. The catalyst can be used for preparing hydrofluoroolefins or hydrochlorofluoroolefins from halohydrocarbons.