SOLUBILITIES OF HYDROGEN AND NITROGEN IN ALCOHOLS AND NORMAL-HEXANE
SOLUBILITIES OF HYDROGEN AND NITROGEN IN ALCOHOLS AND NORMAL-HEXANE
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DOI：
10.1021/je60069a018
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发表时间：
1976-01-01
期刊：
影响因子：
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通讯作者：
NITTA, T
中科院分区：
文献类型：
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作者：
KATAYAMA, T;NITTA, T
在大气压和25 ℃、0 ℃、-20 ℃、-40 ℃和-60 ℃的温度下测量氢和氮在甲醇、乙醇、正丙醇、异丙醇、正丁醇和正己烷中的溶解度，氢异丙醇体系除外。气体的偏摩尔过剩熵（A？）在醇（A）和正己烷（B）中的溶解度由实验数据计算得到的PA-sf-B在-2.4和-3.7 cal/mol·K之间。气体在液体中的溶解度是化工行业设计气体吸收和汽提塔的基本性质。此外，在宽温度范围内的溶解度结果在研究溶液性质中是有用的。已知气体在醇类中的溶解熵小于在非极性溶剂中的溶解熵（5）。然而，在很宽的温度范围内，气体在醇中的溶解度的数据很少。在本实验中，在25、0、-20、-40和-60 ℃的温度下测量了氢和氮在脂肪醇中的溶解度。还获得了在正己烷中的溶解度数据，作为在惰性溶剂中的参考溶解度。根据实验溶解度与温度的关系，计算了气体溶解度的实验熵。
Solubilities of hydrogen and nitrogen in methanol, ethanol, n-propanol, isopropanol, n-butanol, and n-hexane were measured at atmospheric pressure and temperatures of 25, 0,—20,—40, and—60 C, except for the hydrogenisopropanol system. Differences In the partial molar excess entropies of the gases (A?) in alcohols (A) and those in n-hexane (B) sP A—sf-B, calculated from the experimental solubility data, were within the values of—2.4 and—3.7 cal/mol'K.Solubilities of gases in liquids are fundamental properties for designs ofgas absorption and stripping columns in chemi-cal industries. In addition, solubility results over a wide range of temperature are useful in studying the solution properties. The entropies of solution of a gas In alcohols have been known to be smaller than those in nonpolar solvents (5). However, there have been few data of gas solubilities in alcohols over a wide range of temperature. In this experiment, solubility measurements of hydrogen and nitrogen in aliphatic alcohols at temperatures of 25, 0,—20,—40, and—60 C have been performed. Solubility data in n-hexane have also been obtained as reference solubilities in an inert solvent. The experimental entropies of solution of a gas are calculat-ed from the temperature dependence of experimental solubilities.