Adsorption chemistry of sulfur dioxide in hydrated Na-Y zeolite

被引:14
|
作者
Kirschhock, CEA [1 ]
Sultana, A [1 ]
Godard, E [1 ]
Martens, JA [1 ]
机构
[1] Catholic Univ Louvain, Ctr Surface Chem & Catalysis, B-3001 Louvain, Belgium
关键词
environmental chemistry; nitrogen oxides; sulfur; X-ray diffraction; zeolites;
D O I
10.1002/anie.200454266
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Exceptional resistance to sulfur poisoning of the Na-Y zeolite arises from the localization of adsorbed sulfur dioxide on the zeolite in the presence of water. The work shows that Rietveld refinement of guest molecules is a powerful method to determine positions and states of different molecules co-adsorbed on a zeolite (see picture; H2SO3 in yellow (S) and large red spheres (O); zeolite framework in small red (O) and gray (Si or Al) spheres; large gray sphere is the Na cation).
引用
收藏
页码:3722 / 3724
页数:3
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