Dehydration-rehydration behaviour of layered double hydroxides: A study by X-ray diffractometry and MAS NMR spectroscopy

被引：9

作者：

Beres, A

Palinko, I

Bertrand, JC

Nagy, JB

Kiricsi, I

机构：

[1] ATTILA JOZSEF UNIV, DEPT ORGAN CHEM, H-6720 SZEGED, HUNGARY

[2] ATTILA JOZSEF UNIV, DEPT APPL CHEM, H-6720 SZEGED, HUNGARY

[3] FAC UNIV NOTRE DAME PAIX, RESONANCE MAGNET NUCL LAB, B-5000 NAMUR, BELGIUM

来源：

JOURNAL OF MOLECULAR STRUCTURE | 1997年 / 410卷

关键词：

Mg-Al and Zn-Al layered double hydroxides; calcination; rehydration; x-ray diffractometry; Al-27 MAS NMR spectroscopy;

D O I：

10.1016/S0022-2860(96)09558-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mg-Al and Zn-Al double hydroxides were synthesized and their dehydration-rehydration behaviour was studied by X-ray diffractometry and Al-27 magic-angle spinning (MAS) NMR spectroscopy. On dehydration the layered structure collapsed, but treatment in water resulted in partial reconstitution of the original structure, Or. heat treatment part of the octahedrally coordinated aluminium, typical of layered double hydroxides, became tetrahedrally coordinated, On rehydration some of the tetrahedral aluminium became octahedrally coordinated again. (C) 1997 Elsevier Science B.V.

引用

页码：13 / 16

页数：4

共 16 条

[1] Synthesis of layered double hydroxides and their reactivities in 1-butene isomerization after calcination [J].