Effect of Dissolved Cadmium Chloride and Ammonium Chloride Salts on the Enthalpy of Mixing of the Methanol＋Benzene System at 303.15 K  

作　　者：TAMILARASAN Rengasamy ANAND PRABU Arun KAP JIN Kim DHARMENDIRA KUMAR Mahendradas 

机构地区：[1]Department of Chemistry, Anna University (Tiruchirappalli-Pattukkottai Campus) 614 701, India [2]Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology University, Vellore 632014, India [3]Department of Advanced Materials Engineering for Information & Electronics, College of Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do 446-701, South Korea [4]Department of Chemical Engineering, Alagappa Chettiar College of Technology, Anna University, Chennai 600 025, India

出　　处：《Chinese Journal of Chemical Engineering》2010年第6期995-999,共5页中国化学工程学报（英文版）

基　　金：Supported by Basic Science Research Program through the National Research Foundation of Korea(NRF);funded by the Ministry of Education,Science and Technology(R11-2005-065);DST-SERC,New Delhi,India(100/IFD/9726/2009-2010 dated 2/2/2010)

摘　　要：The effect of two dissolved inorganic salts,cadmium chloride CdCl2 and ammonium chloride NH4Cl,on the excess enthalpy of mixing(HE) of the binary system methanol + benzene measured at 303.15 K using an iso-thermal displacement calorimeter with vapor space is investigated in the present work. Compared to the salt-free system,a decreasing trend in the endothermicity of HE values is significant with the addition of CdCl2 salt but the decrease in the HE values is insignificantly smaller with the addition of NH4Cl salt. The experimental values of the enthalpy of mixing are fitted into a Redlich-Kister equation and the deviations in the values and the parameters are reported. The importance of the solute-solvent interactions and the solvent-solvent interactions are demonstrated from the increasing excess enthalpy of mixing values in the positive direction with the increase of salt concentration.The effect of two dissolved inorganic salts,cadmium chloride CdCl2 and ammonium chloride NH4Cl,on the excess enthalpy of mixing（HE） of the binary system methanol ＋ benzene measured at 303.15 K using an iso-thermal displacement calorimeter with vapor space is investigated in the present work. Compared to the salt-free system,a decreasing trend in the endothermicity of HE values is significant with the addition of CdCl2 salt but the decrease in the HE values is insignificantly smaller with the addition of NH4Cl salt. The experimental values of the enthalpy of mixing are fitted into a Redlich-Kister equation and the deviations in the values and the parameters are reported. The importance of the solute-solvent interactions and the solvent-solvent interactions are demonstrated from the increasing excess enthalpy of mixing values in the positive direction with the increase of salt concentration.

关 键 词：salt effect enthalpy of mixing displacement calorimeter methanol-benzene Redlich-Kister equation 

分 类 号：TQ113.72[化学工程—无机化工] O614.242[理学—无机化学]