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:
Jan. 23, 2024
Filed:
Feb. 24, 2020
Zhejiang Research Institute of Chemical Industry Co., Ltd., Zhejiang, CN;
Zhejiang Lantian Environmental Protection Hi-tech Co., Ltd., Hangzhou, CN;
Sinochem Lantian Co., Ltd., Hangzhou, CN;
Jianjun Zhang, Zhejiang, CN;
Wenfeng Han, Zhejiang, CN;
Shucheng Wang, Zhejiang, CN;
Wucan Liu, Zhejiang, CN;
Feixiang Zhou, Zhejiang, CN;
SINOCHEM LANTIAN CO., LTD., Zhejiang, CN;
ZHEJIANG LANTIAN ENVIRONMENTAL PROTECTION HI-TECH CO., LTD., Hangzhou, CN;
ZHEJIANG RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CO., LTD., Zhejiang, CN;
Abstract
Disclosed is a method for reducing carbon deposits on a catalyst in recycling HFC-23. The recycling is realized by means of a fluorine-chlorine exchange reaction with HFC-23 and a halogenated hydrocarbon. The catalyst for the fluorine-chlorine exchange reaction comprises a main body catalyst and a precious metal. The precious metal is selected from at least one of Pt, Pd, Ru, Au or Rh, and has an addition amount of 0.01-2 wt %. During the fluorine-chlorine exchange reaction, hydrogen gas is introduced. The invention has advantages of good catalyst stability, long life, etc.