Characterization of zeolite basicity using probe molecules by means of infrared and solid state NMR spectroscopies
Characterization of zeolite basicity using probe molecules by means of infrared and solid state NMR spectroscopies
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DOI：
10.1016/j.cattod.2008.12.012
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发表时间：
2009-05
期刊：
影响因子：
5.3
通讯作者：
M. Sánchez-Sánchez-M.-Sánchez-Sánchez-1398732651;T. Blasco
中科院分区：
文献类型：
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作者：
M. Sánchez-Sánchez-M.-Sánchez-Sánchez-1398732651;T. Blasco
这项工作回顾了使用吡咯、氯仿、甲醇以及“原位”生成的甲氧基和亚硝基作为红外和核磁共振探针分子来表征沸石碱性。参考文献中报道的主要结果涉及吸附分子的光谱性质与骨架碱度的相关性、主客体相互作用以及使用这些分子作为沸石碱度探针的局限性。特别关注使用 IR 和 NMR 光谱法在碱交换 FAU 型沸石上吸附吡咯和卤化碳（尤其是 CHCl3 和 CHClF2）的结果。
This work reviews the use of pyrrole, chloroform, methanol, as well as methoxy and nitrosonium groups generated ‘in situ’, as infrared and NMR probe molecules to characterize zeolites basicity. The main results reported in the bibliography about the correlation of the spectroscopic properties of the adsorbed molecule with the framework basicity, the host–guest interactions, and the limitations in the use of these molecules as probes for zeolite basicity are discussed. Special attention is paid to the results reported for the adsorption of pyrrole and halocarbons, most specially CHCl3and CHClF2over alkali-exchanged FAU-type zeolites using IR and NMR spectroscopies.