STANDARD ENTHALPIES OF FORMATION OF FLUORAPATITE HYDROXYAPATITE AND CHLORAPATITE

被引：20

作者：

BENCHERIFA, A

SOMRANI, S

JEMAL, M

机构：

[1] FAC SCI TUNIS,DEPT CHIM,CAMPUS UNIV,TUNIS 1060,TUNISIA

[2] INST NATL RECH SCI & TECH,HAMMAN LIF,TUNISIA

来源：

JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE | 1991年 / 88卷 / 10期

关键词：

D O I：

10.1051/jcp/1991881893

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Enthalpies of solution of fluorapatite Ca10(PO4)6F2, hydroxyapatite Ca10(PO4)6(OH)2, chlorapatite Ca10(PO4)6Cl2 in HNO3; 35,35 H2O have been measured using an isoperibol calorimeter. Combining these results with the enthalpies of solution of H3PO4; (Ca(NO3)2; 4H2O); HClaq; HFaq and H2O in the same solvant leads to the standard enthalpies of formation of calcium phosphates, these values are respectively: DELTA-H(form) degrees (T(o)) = - 3238, 2 kcal.mol-1 for FAp; - 3179,9 kcal.mol-1 for HAp and - 3148,5 kcal.mol-1 for ClAp.

引用

页码：1893 / 1900

页数：8