MECHANISM FOR THE DEHYDROXYLATION OF KAOLINITE, DICKITE, AND NACRITE FROM ROOM TEMPERATURE TO 455 degree C.

被引：0

作者：

Suitch, P.R. ^{[1
]}

机构：

[1] Georgia Inst of Technology, Sch of, Materials Engineering, Atlanta, GA,, USA, Georgia Inst of Technology, Sch of Materials Engineering, Atlanta, GA, USA

来源：

Journal of the American Ceramic Society | 1986年 / 69卷 / 01期

关键词：

CLAY; -; KAOLIN;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The mechanism for the dehydroxylation of Keokuk kaolinite, dickite, and nacrite (Al//2Si//2O//5(OH)//4) was investigated in detail with the aid of powder X-ray diffraction, the Rietveld method, and infrared spectroscopy. It was determined that these polymorphic clay minerals dehydroxylate via an inhomogeneous mechanism in the range room temperature to 455 degree C. This result implies that when these samples dehydroxylate (up to 40% dehydroxylated at 455 degree C) the individual crystallites spontaneously react either completely, to form the metaphase of these minerals, or not at all, retaining all the structural details of the unheated crystalline material.

引用

页码：61 / 65

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