Synthesis and characterization of the new cyclosilicate hydrate (hexamethyleneimine)4•[Si8O16(OH)4]•12H2O

被引：7

作者：

Verlooy, Pieter L. H. ^{[1
]}

Robeyns, Koen ^{[2
]}

Van Meervelt, Luc ^{[2
]}

Lebedev, Oleg I. ^{[3
]}

Van Tendeloo, Gustaaf ^{[3
]}

Martens, Johan A. ^{[1
]}

Kirschhock, Christine E. A. ^{[1
]}

机构：

[1] Catholic Univ Louvain, Ctr Surface Chem & Catalysis, B-3001 Heverlee, Belgium

[2] Catholic Univ Louvain, Dept Chem, B-3001 Heverlee, Belgium

[3] Univ Antwerp, Dept Phys, EMAT, B-2020 Antwerp, Belgium

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2010年 / 130卷 / 1-3期

关键词：

Cyclosilicate hydrate; Hydrogen bonds; Cubic silicate octamer; Hexamethyleneimine; Microporous material; X-RAY-DIFFRACTION; TRIETHYL-(2-HYDROXYETHYL)AMMONIUM SILICATE SOLUTIONS; NUCLEAR-MAGNETIC-RESONANCE; DOUBLE-RING SILICATE; CLATHRATE HYDRATE; CRYSTAL-STRUCTURE; TETRAMETHYLAMMONIUM SILICATE; STRUCTURAL LINKS; ZEOLITE-TYPE; CONSTITUTION;

D O I：

10.1016/j.micromeso.2009.10.006

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A new cyclosilicate hydrate with composition (C6H14N)(4)center dot[Si8O16(OH)(4)]center dot 12H(2)O was crystallized and the structure determined by single-crystal X-ray diffraction. The structure, described by the tetragonal space group I4(1)/a, with unit cell dimensions of a = 39.2150(2) angstrom and c = 14.1553(2) angstrom, contains columns of hydrogen-bonded cubic octamer silicate anions. The space between silicate columns holds hydrogen-bonded water and protonated hexamethyleneimine molecules compensating the negative charge of the silicate. The crystal water can be removed resulting in a rearrangement of the columns into ortho-rhombic symmetry. Removal of the organic moiety causes amorphisation. Flash evacuation results in a new microporous material with pore volumes typical of a zeolite. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：14 / 20

页数：7

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