Catalytic properties of tungsten oxycarbide and carbide in hydrocarbon conversion

作     者：GAO,Zi QIN,Dai-Yi Department of Chemistry,Fudan University,Shanghai 200433 

出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)

年 卷 期：1990年第8卷第3期

页      面：207-214页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：This work was supported by the National Natural Science Foundation of China 

主　　题：WOC EXAFS 

摘      要：Tungsten oxycarbide with specific surface area 24 m^2/g was prepared from white tungstic acid by reduction and carburization with CO and H_*** and EXAFS measurements confirmed that the WOC obtained has a simple hexagonal structure isotypic with α-WC and the oxygen is inserted into the trigonal prismatic interstices of the crystal *** reactions of n- hexane,n-heptane and cyclohexane on WOC were studied and compared with WC prepared by direct synthesis at high temperature,WOC and WC are active for the hydrogenolysis,isomerization and dehydrocyclization of alkanes and dehydrogenation of cyclohexane and their catalytic properties are in many ways similar to Pt *** insertion inhibits the catalytic activities of tung- ten carbide for hydrocarbon conversion reactions probably due to electronic effect.