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合成氯柱硼镁石(2MgO·2B_2O_3·MgCl_2·14H_2O)和章氏硼镁石(MgO·2B_2O_3·9H_2O),用恒定温度环境反应热量计测定溶解热和反应热的基础上,运用热化学循环原理计算得到这两种硼酸盐的标准生成焓。
On the basis of the determination of the heat of solution and the reaction heat by using a constant temperature environment calorimeter, the thermochemical cycle was established by synthesizing chloropinocarbite (2MgO · 2B_2O_3 · MgCl_2 · 14H_2O) and magnesia-magnesia (MgO · 2B_2O_3 · 9H_2O) The principle calculation yields the standard enthalpy of formation for both borates.