【摘要】 用独特的毛细管流动法装置测定物质的临界温度和临界压力,该法具有体积小、升温迅速和受热均匀等特点,适于测定不稳定化合物的临界性质。以正己烷、1 庚烯为标准试剂,对该装置进行了考核。测定了溴乙烷、丙烯酸丁酯、烯丙醇3种物质的临界温度及临界压力。首次提供了丙烯酸丁酯、烯丙醇的临界数据,并且校正了溴乙烷临界温度和临界压力值。更多还原

【Abstract】 A unique capillary-flow method apparatus was used to determine the critical temperatures (T_c) and (critical) pressures (p_c).Such method has the advantages of simple structure,rapid heating-up and evenly-heated, and is suitable for determining the critical properties of unstable compounds.Apparatus was calibrated with n-h(exane) and n-heptene as standard reagents.The critical temperatures and pressures of three organic compounds,including ethyl bromide,n-butyl acrylate,allyl alcohol were determined with such apparatus.The T_c and p_c data of ethyl bromide are more reliable than the early years work, and the data of n-butyl acrylate and allyl alcohol were provided for the first time.更多还原