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高压下气体在混合溶剂中溶解度的测定与研究,无论在理论研究或是实际应用方面均具有重要的意义。但由于进行这类研究,特别是在升温升压下,费时,昂贵和有一定难度,目前这方面的数据十分缺乏。作为本实验室研究系列之一部份,本文将报导文献中尚未见发表的氮气在正庚烷-正辛烷混合溶剂中的溶解度研究结果。实验部份1.试剂氮气纯度99.999%,由北京氧气厂提供;正庚烷,正辛烷由北京化工厂产分析纯试剂,本实验室又进一步精馏纯化。纯化后的试剂用气相色谱分析其纯度高于99.4%.混合溶剂的组成用重量法配制。
The measurement and research on the solubility of gas under high pressure in mixed solvents are of great significance both in theory and in practical application. However, due to the time-consuming, expensive and difficult task of carrying out such studies, especially under the conditions of increasing temperature and increasing pressure, the current data on this area are very scarce. As part of our laboratory series, this article reports the results of a literature review of the solubility of nitrogen in n-heptane-n-octane mixtures. Experimental 1. Reagents Nitrogen purity of 99.999%, provided by the Beijing Oxygen Plant; n-heptane, n-octane by the Beijing Chemical Plant production of analytical reagents, the laboratory further distillation purification. The purity of the purified reagent was higher than 99.4% by gas chromatography, and the composition of the mixed solvent was gravimetric.