Standard molar enthalpies of formation of hydroxy-, chlor-, and bromapatite

被引：27

作者：

Cruz, FJAL

da Piedade, ME

Calado, JCG

机构：

[1] Inst Super Tecn, Ctr Quim Estrutural, P-1049001 Lisbon, Portugal

[2] Univ Lisbon, Fac Ciencias, Dept Quim & Bioquim, P-1749016 Lisbon, Portugal

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2005年 / 37卷 / 10期

关键词：

apatites; hydroxyapatite; chlorapatite; bromapatite; enthalpy of formation; thermochemistry;

D O I：

10.1016/j.jct.2005.01.010

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The standard (p degrees = 0.1 MPa) molar enthalpies of formation in the crystalline state of hydroxyapatite, chlorapatite and a preliminary value for bromapatite, at T = 298.15 K, were determined by reaction-solution calorimetry as: Delta(f)H(m)degrees[Ca-10(PO4)(6)Br-2, cr] = (OH)(2), cr] = -(13399 +/- 11) kJ(.)mol(-1), Delta(f)H(m)degrees[Ca-10(PO4)(6)Cl-2, cr] = -(13231 +/- 82) kJ(.)mol(-1), and Delta(f)H(m)degrees[Ca-10(PO4)(6)Br-2, cr] = -(13063 +/- 81) kJ(.)mol(-1). A critical assessment of these results and of previously published data is made. Finally, the standard molar enthalpy of formation of iodapatite is estimated as Delta(f)H(m)degrees[Ca-10(PO4)(6)I-2, cr] = -12949 kJ(.)mol(-1), from a linear correlation of Delta(f)H(m)degrees[Ca-10(PO4)(6)X-2, cr] (X = OH, F, Cl, Br) against the corresponding Delta(f)H(m)degrees[CaX2, cr]. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：1061 / 1070

页数：10

共 50 条

[31] Thermochemical Studies for Determination of the Standard Molar Enthalpies of Formation of Alkyl-Substituted Furans and Some Ethers [J].

Sergey P. Verevkin ;

Frank M. Welle .

Structural Chemistry, 1998, 9 :215-221

[32] Standard enthalpies of formation of dicyclopropyldinitromethane and tricyclopropylmethane [J].

Pimenova, S. M. ;

Lukyanova, V. A. ;

Ilin, D. Yu ;

Druzhinina, A., I ;

Dorofeeva, O., V .

JOURNAL OF CHEMICAL THERMODYNAMICS, 2019, 132 :316-321

[33] Standard molar enthalpies of formation of crystalline stereoisomers of aldono-1,4-lactones [J].

Flores, H ;

Amador, P .

JOURNAL OF CHEMICAL THERMODYNAMICS, 2004, 36 (11) :1019-1024

[34] Thermochemistry of amines: experimental standard molar enthalpies of formation of some aliphatic and aromatic amines [J].

Verevkin, SP .

JOURNAL OF CHEMICAL THERMODYNAMICS, 1997, 29 (08) :891-899

[35] Standard enthalpies of formation determination of lanthanum fluorbritholites [J].

Ardhaoui, Kaouther .

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2020, 261

[36] The standard molar enthalpies of combustion and vaporization of three oxazolidines [J].

Gudino, R ;

Torres, LA ;

Santillan, RL ;

Farfan, N .

JOURNAL OF CHEMICAL THERMODYNAMICS, 1998, 30 (06) :671-679

[37] Standard molar enthalpies of formation of 2-, 3-, and 4-piperidinomethanol isomers [J].

da Silva, Manuel A. V. Ribeiro ;

Cabral, Joana I. T. A. .

JOURNAL OF CHEMICAL THERMODYNAMICS, 2006, 38 (08) :1008-1012

[38] Synthesis, characterization and determination of standard molar enthalpies of formation of two copper borophosphates by solution calorimetry [J].

Zhang, Guang-Hui .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2016, 125 (01) :519-525

[39] Prediction of standard enthalpies of formation of boron nitride nanocones [J].

Shojaie, Fahimeh .

TURKISH JOURNAL OF PHYSICS, 2020, 44 (02) :174-194

[40] Standard molar enthalpy of formation of methoxyacetophenone isomers [J].

Amaral, Luisa M. P. F. ;

Morais, Victor M. F. ;

Ribeiro da Silva, Manuel A. V. .

JOURNAL OF CHEMICAL THERMODYNAMICS, 2014, 74 :22-31

← 1 2 3 4 5 →