New synthetic method and thermochemistry of szaibelyite |
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| Authors: | Liu Zhihong Hu Mancheng |
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| Affiliation: | School of Chemistry and Materials Science, Shaanxi Normal University, Xi’an 710062, PR China |
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| Abstract: | A new synthetic method of szaibelyite (2MgO·B2O3·H2O) has been reported. The enthalpy of solution of 2MgO·B2O3·H2O in 2.9842 mol dm−3 HCl (aq) was determined. From a combination of this result with measured enthalpies of solution of H3BO3 in 2.9842 mol dm−3 HCl (aq) and of MgO in (HCl+H3BO3) solution, together with the standard molar enthalpies of formation of MgO (s), H3BO3 (s), and H2O (l), the standard molar enthalpy of formation of −(2884.36±1.82) kJ mol−1 of 2MgO·B2O3·H2O was obtained. |
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| Keywords: | Szaibelyite Synthesis Standard molar enthalpy of formation Solution calorimetry |
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