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为了解决2种溶液在混合前温度不易相等的问题而设计的双温度计法,可以快速测定2种溶液混合前后温度差值,并将这一新方法用于衡量锰、铝、铁水合氧化物在吸附溶液硼时所产生的热效应。结果表明,锰、铝、铁的水合氧化物对硼的吸附均有不同程度的热效应。供试样品与硼发生吸附反应所引起的热效应造成温度随时间变化的情况与通常的雷诺曲线相同,而水合氧化物悬浮液以及吸附质溶液的稀释与吸附反应相比较,其热效应小得多。使用这种双温度计法就可实现在通常条件下测定诸如吸附反应这类热效应引起的温度变化,从而为进一步研究吸附热提供了简单易行的量热方法。
In order to solve the problem that the two solutions are not easy to be equalized before mixing, the double thermometer method can quickly determine the temperature difference between the two solutions before and after mixing. The new method is used to measure the difference between Adsorption of boron solution when the thermal effects. The results show that the adsorption of boron by hydrated oxides of manganese, aluminum and iron all have different degrees of thermal effects. The thermal effect caused by the adsorption reaction between the sample and the boron causes the temperature to change with time as usual and the Reynolds curve is the same. However, the dilution effect of the hydrous oxide suspension and the adsorbate solution is much smaller than that of the adsorption reaction. Using this dual-thermometer method, it is possible to measure the temperature change caused by the thermal effect such as the adsorption reaction under the usual conditions, thereby providing a simple and easy calorimetric method for further studying the heat of adsorption.