气相氟化合成氢氟烯烃催化剂的研究进展

Research Progress of Catalysts for Gas-phase Fluorination to Synthesize Hydorfluoroolefins

氢氟烯烃(HFOs)是重要的精细化工中间体,气相氟化合成HFOs具有可连续生产、避免对反应釜的严重腐蚀等优点,简化生产工艺已成为国内外生产氟化工产物的重要方法.本文简要介绍了合成HFOs的常见催化反应类型以及反应机制,并按照主催化剂成分分类概述气相氟化合成所用的催化剂,介绍了各类催化剂的传统制备方法(如沉淀法等)和新的制备方法(如自组装法、溶液燃烧合成法、硬模板法、静电纺丝法等),以及催化性能,提出了该催化剂的未来发展方向.

Fluorine-containing hydrocarbons,which are commonly used as fluoroelastomer functional polymer monomers and fluororesin monomers,refrigerants,aerosol sprays,and foaming agents,were synthe⁃sized by the gas phase fluorination method.The method has the advantages of continuous production and avoiding serious corrosion to the reaction kettle,which simplifies the production process and becomes an important method for the production of fluorinated chemical products.This article summarizes catalytic reaction types and reaction mechanisms for the synthesis of HFOs are briefly introduced,and the catalysts used in gas⁃phase fluorination synthesis are summarized according to the main catalyst components.The traditional preparation methods(such as precipitation methods,etc.)and new preparation methods of various catalysts are introduced(Such as self⁃assembly method,solution combustion synthesis method,hard template method,electrospinning method,etc.),as well as catalytic performance,proposed the future development direction of the catalyst.