Adsorption complexes of methanol on zeolite ZSM-5
Adsorption complexes of methanol on zeolite ZSM-5
复制标题
ZSM-5沸石上甲醇的吸附配合物
DOI:
10.1039/ft9908603039
复制
发表时间:
1990
期刊:
影响因子:
--
通讯作者:
J. Klinowski
中科院分区:
文献类型:
--
作者:
G. Mirth;J. Lercher;Michael W Anderson;J. Klinowski
Infrared spectroscopy, 1H MAS NMR and thermogravimetric analysis have been used to study the chemistry of methanol adsorbed on zeolites H-ZSM-5, Na-ZSM-5 and K-ZSM-5. On H-ZSM-5, methanol forms the CH3OH+2 methoxonium ion at low coverages. At higher coverages, large protonated clusters of strongly hydrogen-bonded molecules associated with the Bronsted-acid sites are present. In zeolites Na-ZSM-5 and K-ZSM-5 methanol is coordinatively adsorbed on the cation and forms weakly hydrogen-bonded clusters at higher equilibrium pressures.