Preparation, characterisation and catalytic activity of ITQ-2, a delaminated zeolite

被引：189
|
作者：
Corma, A
Fornés, V
Guil, JM
Pergher, S
Maesen, TLM
Buglass, JG
机构：
[1] Univ Politecn Valencia, Inst Tecnol Quim, Valencia 46022, Spain
[2] CSIC, Inst Quim Fis Rocasolano, E-28006 Madrid, Spain
[3] Zeolyst Int, R&D Ctr, Conshohocken, PA 19428 USA
[4] Shell Int Chem BV, NL-1031 CM Amsterdam, Netherlands
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2000年 / 38卷 / 2-3期
关键词：
delaminated zeolites; external surface; catalytic activity; bronsted acidity; transmission electron microscopy;
D O I：
10.1016/S1387-1811(00)00149-9
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
ITQ-2 is the first member of the class of delaminated zeolite precursors. Here we present data to corroborate its proposed structure. Sorption measurements show that ITQ-2 no longer contains large 12-membered-ring (12MR) cavities typical for the non-delaminated MWW-type zeolite, and only retained the 10-membered-ring (10MR) system inside the layer. Adsorption and high resolution transmission electron microscopy (HR-TEM) experiments confirm that delamination allows the ITQ-2 layer to retain most of its structural integrity. The catalytic properties of ITQ-2 are in agreement with those expected from an aluminosilicate that combines a large, catalytically active external surface with the 10MR channel system. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：301 / 309
页数：9
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