节点文献
Synthesis,Characterization and Thermochemistry of 2MgO·B2O3·1.5H2O
【Abstract】 A new magnesium borate 2MgO·B_ 2 O_ 3 ·1.5H_ 2 O has been synthesized by the method of phase transformation of double salt under hydrothermal condition and characterized by XRD,IR,Raman spectra and TG. The enthalpy of solution of 2MgO· B_ 2 O_ 3 ·1.5H_ 2 O in 2.9842 mol·L -1 HCl was determined. From a combination of this result with measured enthalpies of solution of H_ 3 BO_ 3 in 2.9842 mol·L -1 HCl(aq.) and of MgO in (HCl+H_ 3 BO_ 3 ) solution,together with the standard molar enthalpies of formation of MgO(s),H_ 3 BO_ 3 (s),and H_ 2 O(l),the standard molar enthalpy of formation of -(3019.76±1.79) kJ· mol -1 of 2MgO·B_ 2 O_ 3 ·1.5H_ 2 O was obtained.
【关键词】 2MgO·B2O3·1.5H2 O；
synthesis；
characterization；
standard molar enthalpy of formation；
【Key words】 2MgO·B2O3·1.5H2 O； synthesis； characterization； standard molar enthalpy of formation；
【Key words】 2MgO·B2O3·1.5H2 O； synthesis； characterization； standard molar enthalpy of formation；
【基金】 ProjectsupportedbytheNaturalScienceFoundationofShaanxiProvinceofChina (No .2 0 0 2B13 )
- 【文献出处】 Chinese Journal of Chemistry ,中国化学(英文版) , 编辑部邮箱 ,2003年12期
- 【分类号】O642
- 【被引频次】1
- 【下载频次】5