ADSORPTION OF CO2 ON NONSTOICHIOMETRIC STRONTIUM CALCIUM HYDROXYAPATITES

被引：44

作者：

ISHIKAWA, T

SAITO, H

YASUKAWA, A

KANDORI, K

机构：

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1993年 / 89卷 / 20期

关键词：

D O I：

10.1039/ft9938903821

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：

Colloidal particles of homogeneous solid solutions of strontium and calcium hydroxyapatites (SrCaHAP) have been synthesized in different mole fractions, Sr/(Ca + Sr) ranging from 0 to 1. The crystallite size of the SrCaHAP particles obtained was a minimum around Sr/(Ca + Sr) = 0.3, whereas the specific surface area was maximum around the same Sr/(Ca + Sr). The morphology of the SrCaHAP particles became irregular as Sr/(Ca + Sr) increased up to 0.5. The irreversible adsorption of CO2 per unit surface area was a minimum at (Ca + Sr)/P = 1.56, less than the stoichiometric value of 1.67 These results suggest that there are two kinds of irreversible adsorption site for CO2 on SrCaHAP.

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页码：3821 / 3825

页数：5

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