| (n-C18H37NH3)2MCl4热容的测定 |
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| 引用本文： | 徐瑞云,孔德俊,蔡显鄂,朱京.(n-C18H37NH3)2MCl4热容的测定[J].物理化学学报,1993,9(6):802-807. |
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| 作者姓名： | 徐瑞云 孔德俊 蔡显鄂 朱京 |
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| 作者单位： | Shanghai Institute of Chemical Technology, Shanghai 200233; Department of Chemistry, Fudan University, Shanghai 200433 |
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| 摘 要： | 在差示扫描量热仪(DSC仪)上, 采用扫描热焓法测定物质的热容, 实验精度达到±1%左右. 在190-410 K温度区间内, 测定了四氯合金属酸(Ⅱ)正十八铵(n-C_(18)H_(37)NH_3)_2MCl_4(M=Mn和Zn; 简称C_(18)M)的热容. 同时测定了C_(18)M的固-固相变焓和相变熵. 本文报导了C_(18)M每隔5 K的热力学函数.
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| 关 键 词： | 扫描量热法 热容 固-固相变焓 四氯合金属酸(II)正十八铵 |
| 收稿时间： | 1992-04-24 |
| 修稿时间： | 1992-11-09 |
MEASUREMENT OF CAPACITIES FOR (n-C_(18)H_(37)NH_3)_2MCl_4 |
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| Xu Ruiyun.MEASUREMENT OF CAPACITIES FOR (n-C_(18)H_(37)NH_3)_2MCl_4[J].Acta Physico-Chimica Sinica,1993,9(6):802-807. |
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| Authors: | Xu Ruiyun |
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| Institution: | Shanghai Institute of Chemical Technology, Shanghai 200233; Department of Chemistry, Fudan University, Shanghai 200433 |
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| Abstract: | The heat capacities of samples were measured by Differential Scanning Calorimetry(DSC), using scanning enthalpy method. The accuracy of the heat capacity measurements was appoximately 1 per cent by the method. The heat capacities of bis(n-octadecylammonium) tetrachlorometal-iates (Ⅱ), (n-C_(18)H_(37)NH_3)_2MCl_4 (M=Mn, Zn; short notation C_(18)M), were measured from 190 to 410 K. The enthalpies and entropies of the solid-solid phase transitions for C_(18)M were calculated. The selected thermodynamic functions were given at intervals of 5 K from 190 to 410 K. |
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| Keywords: | Scanning enthalpy method Heat capacity Solid-solid phase transition enthalpy n-octadecylammonium) tetrachloro-metallated(II)' ') Bis(n-octadecylammonium) tetrachloro-metallated(II)" target="_blank">">Bis(n-octadecylammonium) tetrachloro-metallated(II) |
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