Preparation, characterisation and catalytic activity of ITQ-2, a delaminated zeolite
Preparation, characterisation and catalytic activity of ITQ-2, a delaminated zeolite
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DOI：
10.1016/s1387-1811(00)00149-9
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发表时间：
2000-08-01
影响因子：
5.2
通讯作者：
Buglass, JG
中科院分区：
文献类型：
--
作者：
Corma, A;Fornés, V;Buglass, JG
ITQ-2是分层沸石前体类的第一个成员。在这里，我们提出的数据来证实其拟议的结构。吸附测量表明，ITQ-2不再包含大的12元环（12 MR）腔典型的非分层MWW型沸石，只保留10元环（10 MR）系统内的层。吸附和高分辨率透射电子显微镜（HR-TEM）的实验证实，分层允许ITQ-2层，以保持其大部分的结构integrity.The催化性能的ITQ-2是在与那些预期从铝硅酸盐，结合了一个大的，催化活性的外表面与10 MR通道系统。(C)2000 Elsevier Science B. V.保留所有权利。
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.