Solid-state NMR studies of methanol-to-aromatics reaction over silver exchanged HZSM-5 zeolite

被引：33
|
作者：
Zeng, Danfin [1 ]
Yang, Jun [1 ]
Wang, Jiqing [1 ]
Xu, Jun [1 ]
Yang, Yongxia [1 ]
Ye, Chaohui [1 ]
Deng, Feng [1 ]
机构：
[1] Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2007年 / 98卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
methanol conversion to aromatics; AgZSM-5; solid-state NMR;
D O I：
10.1016/j.micromeso.2006.09.012
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Solid-state NMR spectroscopy was used to study the conversion of methanol to aromatics (MTA) over silver exchanged HZSM-5 zeolites. It is the silver oxide rather than silver cation that plays a crucial role for the MTA reaction. The aromatic products (mainly toluene and benzene) are formed at the expense of the small alkanes (mainly propane and isobutane). AgZSM-5 zeolite calcined in air shows much higher activity and selectivity for the MTA conversion compared with AgZSM-5 zeolite calcined in vacuum or HZSM-5 zeolite. A possible reaction mechanism is proposed for the MTA conversion on the AgZSM-5 zeolite. (C) 2006 Elsevier Inc. All rights reserved.
引用
收藏
页码：214 / 219
页数：6
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