苯
催化作用
MCM-41
化学
甲烷
分子筛
沸石
介孔材料
ZSM-5型
无机化学
化学工程
碳氢化合物
氧气
多相催化
有机化学
作者
Azfar Hassan,Abdelhamid Sayari
出处
期刊:Studies in Surface Science and Catalysis
日期:2005-01-01
被引量:1
标识
DOI:10.1016/s0167-2991(05)80284-8
摘要
Oxygen-free dehydroaromatization of methane to benzene over Mo-based catalysts supported on MCM-41 and MCM-22 has been investigated. We herein report a new catalyst preparation procedure that involves low temperature vapor deposition of Mo in zero-valent state, using Mo(CO) 6 as precursor. In situ -carburization of Mo, using CH 4 /H 2 gas mixture led to the formation of catalytically active Mo x C species. Mo/MCM-22 was found to be highly active as almost equilibrium methane conversions were obtained both at 600 and 700°C. This catalyst was also highly selective for benzene formation at both temperature.
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