发明授权
US5571770A Catalyst for fluorination of 1,1,1,-trifluoro-2,2-dichloroethane and method for preparing the same 失效
用于氟化1,1,1-三氟-2,2-二氯乙烷的催化剂及其制备方法

Catalyst for fluorination of 1,1,1,-trifluoro-2,2-dichloroethane and
method for preparing the same
摘要:
There are a catalyst for fluorination production of 1,1,1-trifluoro-2,2-dichloroethane comprises chromium, one compound selected from the group consisting of Mg and Ca and at least one metal component selected from the group consisting of Zn, Ce and Ni, wherein the molar ratio of Cr to Mg or Ca ranges from 1:1 to 1:32 and the molar ratio Cr to the metal component is not more than 1:0.5, and method for preparing the same comprising the steps of; producing an admixture of a composition comprising chromium, one compound selected from the group consisting of magnesium fluoride and calcium fluoride and at least one metal compound selected from a group consisting of cerium fluoride, zinc fluoride and nickel fluoride with water and refluxing the admixture in methanol or ethanol.
公开/授权文献
信息查询
0/0