1,2-环己二醇标准摩尔燃烧焓和定压热容测定  

Study on standard combustion enthalpy and heat capacity for cis- and trans-1, 2-cyclohexanediol

作　　者：蒋登高[1] 周彩荣[1] 王斐[1] 李惠萍[1] 卫冬燕[1] 

机构地区：[1]郑州大学化工学院,河南郑州450002

出　　处：《化学工程》2005年第4期63-67,共5页Chemical Engineering(China)

基　　金：河南省自然科学基金项目(0211020800);河南省杰出人才创新基金项目(01210011900)

摘　　要：采用GR-3500型氧弹量热计实验测定了顺式-1,2-环己二醇和反式-1,2-环己二醇的标准燃烧焓,分别为-3507.043kJ/mol和-3497.8kJ/mol,并用萘作标准物验证测试仪器,其实验测定值与文献值相对误差为0.053%,同时推算出环己二醇的标准摩尔生成热,分别为568.997kJ/mol(顺式)和578.240kJ/mol(反式)。用NETZSCHDSC204型差示扫描量热仪测定了1,2-环己二醇的定压热容,拟合出环己二醇摩尔定压热容与温度之间的函数关系;同时还测定了1,2-环己二醇的熔点和熔化热,为该产品的新工艺开发、工程设计和工业化生产提供了基础数据。The standard combustion enthalpy of 1,2-cyclohexanediol of the differ geometric structure, as trans-1,2- cyclohexanediol and cis-1,2-cyclohexanediol, were determined by calorimeter, which were respectively - 3497.8 kJ/mol and -3507. 043 kJ/mol at 298.15 K（25 ℃ ） , and the standard enthalpy of formation of 1,2-cylcohexanediol was calculated to be 568. 997 kJ/mol （cis-） and 578. 240 kJ/mol （trans-）. The function relationship between heat capacity and temperature, the melting point as well as the melting heat, were determined by NETZSCH DSC 204 Scanning Calorimeter for 1,2-cyclohexanediol. The basic data were furnished for the exploiting new synthesis method, engineering design and industrialized production on 1,2-cyclohexanediol

关 键 词：1 2-环己二醇 燃烧焓 量热法 热容 

分 类 号：O624.31[理学—有机化学]