Hydrothermal synthesis laumontite, a zeolite

被引：15

作者：

Ghobarkar, H

Schaf, O ^{[1
]}

机构：

[1] Sensor Res Ctr, Greifswald, Germany

[2] Free Univ Berlin, Inst Mineral, D-1000 Berlin, Germany

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 1998年 / 23卷 / 1-2期

关键词：

laumontite; hydrothermal synthesis; preparation of laumontite; morphology of laumontite/leonhardite; laumontite synthesis; laumontite preparation from glass;

D O I：

10.1016/S1387-1811(98)00045-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Laumontite was synthesized in a wide temperature range (between 30 degrees C and 450 degrees C) by hydrothermal treatment of artificial glasses of composition 1CaO-1Al(2)O(3)-4SiO(2) at 1 kbar H2O pressure. The zeolite was always formed with monoclinic symmetry (C2/m, a = 15.02 Angstrom, b = 13.15 Angstrom and c = 7.71 Angstrom, beta =113 degrees). A systematic change of crystal shape with temperature was observed, while other different phases coexisted with laumontite dependent on the temperature range of synthesis. Comparison of the crystal shapes of natural laumontites with the crystal shapes of synthesized laumontites allows predictions regarding the formation temperature of the phase. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：55 / 60

页数：6

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