化学学报 ›› 1988, Vol. 46 ›› Issue (8): 746-750. 上一篇    下一篇

研究论文

汽体流动量热计: 苯汽化热与苯汽体热容的测量

林瑞森;韩贤林;严文兴   

  1. 浙江大学化学系
  • 发布日期:1988-08-15

Vapor-flow calorimeter : The determination of heats of vaporization and vapor heat capacities of benzene

LIN RUISEN;HAN XIANLIN;YAN WENXING   

  • Published:1988-08-15

介绍了根据Pitzer型汽体流动量热计和Newsham型汽化热量热计建立的一套同时测定汽化热和汽态热容的汽体流动量热计. 该量热计可用于测定有机化合物及其混合物在不同温度下的汽化热、从沸点到200℃范围内的汽体热容. 量热计用苯标定, 汽化热的精度达到0.5%以上, 汽体热容的精度约1%.

关键词: 热力学性质, 苯, 比热, 气体流动, 汽化热, 量热剂量计

A combined vapor-flow calorimeter, modified after the Pitzer's vapor-flow calorimeter and the Newsham's vaporization flow calorimeter is described. The calorimeter was used to determine heats of vaporization under different pressures and vapor heat capacities from boiling temps. up to 200癈 for organic compounds and their mixtures The calorimeter was calibrated with benzene, with an accuracy of <0.5% for the heat of vaporization and that of about 1% for the vapor heat capacities.f

Key words: THERMODYNAMIC PROPERTIES, BENZENE, SPECIFIC HEAT, GAS FLOW, VAPORIZATION HEAT, COLORIMETRIC DOSIMETERS

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