Quasi All-Silica Zeolite Obtained by Isomorphous Degermanation of an As-Made Germanium-Containing Precursor

被引：57

作者：

Burel, Laurence ^{[1
]}

Kasian, Nataliia ^{[1
,2
]}

Tuel, Alain ^{[1
]}

机构：

[1] Univ Lyon 1, UMR CNRS 5256, IRCELYON, F-69626 Villeurbanne, France

[2] Natl Acad Sci Ukraine, LV Pisarzhevsky Inst Phys Chem, UA-03028 Kiev, Ukraine

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2014年 / 53卷 / 05期

关键词：

acid treatment; germanium; post-synthesis treatment; silicon; zeolites; TRANSFORMATION; MESOPORES;

D O I：

10.1002/anie.201306744

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ge-containing ITQ-22 zeolites have been almost completely degermanated under strong acidic conditions without modifications of the framework topology. Simultaneous to Ge extraction, the framework was partially dissolved; mesopores were formed but the structure was maintained through the re-incorporation of some of silicon species at vacant sites. The presence of many defects in the degermanated framework enabled the incorporation of tetrahedral aluminum, opening the way to the preparation of new and stable acid catalysts with original topologies.

引用

页码：1360 / 1363

页数：4

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