Molybdenum ZSM-5 zeolite catalysts for the conversion of methane to benzene

Autor: Russell F. Howe, Mervyn A. Long, Jun-Zhong Zhang
Rok vydání: 1998
Předmět:
Zdroj: Catalysis Today. 44:293-300
ISSN: 0920-5861
DOI: 10.1016/s0920-5861(98)00202-8
Popis: This paper describes characterization studies of Mo-HZSM-5 zeolite catalysts active for the non-oxidative conversion of methane to benzene. FTIR, 27 Al and 29 Si NMR evidence is presented for migration of molybdenum into the zeolite pores during catalyst calcination at high temperatures. Mo K-edge EXAFS confirms that calcination produces highly dispersed oxomolybdenum or molybdate species which are converted to a molybdenum carbide phase under reaction conditions. Factors determining catalyst performance are discussed.
Databáze: OpenAIRE