INFRARED STUDY OF OCTAHEDRAL SITE POPULATIONS IN SMECTITES

被引：132

作者：

MADEJOVA, J ^{[1
]}

KOMADEL, P ^{[1
]}

CICEL, B ^{[1
]}

机构：

[1] SLOVAK ACAD SCI, INST INORGAN CHEM, CS-84236 BRATISLAVA, SLOVAKIA

来源：

CLAY MINERALS | 1994年 / 29卷 / 03期

关键词：

D O I：

10.1180/claymin.1994.029.3.03

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：

The hydroxyl stretching region of two montmorillonites (SWy-1, Crook County, Wyoming, USA, and JP, Jeisovy Potok, Slovakia) and a ferruginous smectite (SWa-1, Grant County, Washington, USA) have been analysed using decomposition and curve-fitting. The positions and integrated intensities of component bands were correlated with the nearest cationic environment of the OH groups, and the populations of the octahedral sheet were calculated. The differences between the octahedral coefficients obtained and those from chemical analyses were 0.07 or less. This method provides reasonable contents of octahedral cations for the smectites with various iron contents, containing no other admixtures absorbing in the 3700-3500 cm-1 region. The cation distribution was found to be not completely disordered. Though some preferential pairing has been observed, no general rule could be established.

引用

页码：319 / 326

页数：8

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