Title of article
Synthesis and thermochemistry of 2CaO·B2O3·H2O
Author/Authors
Zh. Liu، نويسنده , , C.F. Zuo، نويسنده , , S.Y. Li، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2004
Pages
4
From page
59
To page
62
Abstract
A pure calcium borate 2CaO·B2O3·H2O has been synthesized under hydrothermal condition and characterized by XRD, FT-IR and TG as well as by chemical analysis. The molar enthalpy of solution of 2CaO·B2O3·H2O in HCl·54.579H2O was determined. From a combination of this result with measured enthalpies of solution of H3BO3 in HCl·54.561H2O and of CaO in HCl+H3BO3 solution, together with the standard molar enthalpies of formation of CaO(s), H3BO3(s), and H2O(l), the standard molar enthalpy of formation of −(3041.8±2.5) kJ mol−1 of 2CaO·B2O3·H2O was obtained.
Keywords
Synthesis , Standard molar enthalpy of formation , 2CaO·B2O3·H2O
Journal title
Thermochimica Acta
Serial Year
2004
Journal title
Thermochimica Acta
Record number
1196608
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