Formation of calcium carbonate particles by direct contact of Ca(OH)2 powders with supercritical CO2

被引：69

作者：

Gu, Wei

Bousfield, Douglas W.

Tripp, Carl P. ^{[1
]}

机构：

[1] Univ Maine, Surface Sci & Technol Lab, Orono, ME 04469 USA

[2] Univ Maine, Dept Chem, Orono, ME 04469 USA

[3] Univ Maine, Dept Chem & Biol Engn, Orono, ME 04469 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2006年 / 16卷 / 32期

关键词：

D O I：

10.1039/b607184h

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：

A novel method to obtain a high conversion of Ca(OH)(2) powder to CaCO3 is reported. The method uses supercritical CO2 containing water that is passed over the dry Ca(OH)(2) powder. Conversions greater than 98% are obtained. The dominant crystal structure is calcite. The process has the advantages of the conventional solution based process in terms of high conversion and the advantages of a gas-solid based process in that dry, non-agglomerated particles are obtained by simple venting of the solvent.

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收藏

页码：3312 / 3317

页数：6

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