Structural Changes of Mo/ZSM-5 Catalysts During the Methane Dehydroaromatization | Zendy

З. Р. Исмагилов | Zendy; Е.В. Матус | Zendy; И.З. Исмагилов | Zendy; М. А. Керженцев | Zendy; V.I. Zailovskii | Zendy; К. Досумов | Zendy; А. Г. Мустафин | Zendy

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Structural Changes of Mo/ZSM-5 Catalysts During the Methane Dehydroaromatization

Author(s) -

З. Р. Исмагилов,

Е.В. Матус,

И.З. Исмагилов,

М. А. Керженцев,

V.I. Zailovskii,

К. Досумов,

А. Г. Мустафин

Publication year - 2009

Publication title -

eurasian chemico-technological journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 9

eISSN - 2522-4867

pISSN - 1562-3920

DOI - 10.18321/ectj20

Subject(s) - zeolite , catalysis , mesoporous material , zsm 5 , methane , chemistry , adsorption , nuclear chemistry , inorganic chemistry , molecular sieve , materials science , chemical engineering , organic chemistry , engineering

The structure changes of Mo/ZSM-5 catalysts with different Mo content (2 and 10 wt. % Mo) and Si/Al atomic ratio (17, 30 and 45) during the methane dehydroaromatization have been investigated by X-ray powder diffractometry, N 2 adsorption and transmission electron microscopy. The treatment of Mo/ZSM-5 catalysts in reducing atmosphere (CH 4 or H 2 ) at about 700 °C promotes development of mesoporous system. The pores are open to the exterior of the zeolite grain and have an entrance diameter of ~ 4-10 nm. It is proposed that mesopore formation in Mo/ZSM-5 catalyst is connected with the dealumination of zeolite. The mesopore formation in the parent H-ZSM-5 zeolite by NaOH treatment does not improve the activity of /ZSM-5 catalyst.

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