| 四氯合金属(II)酸正烷铵在280-500K间的热力学性质和相变 II: 四氯合锌(II)酸正十二烷铵 |
| |
| 引用本文： | 张志英,杨孟林.四氯合金属(II)酸正烷铵在280-500K间的热力学性质和相变 II: 四氯合锌(II)酸正十二烷铵[J].化学学报,1988,46(3):281-284. |
| |
| 作者姓名： | 张志英 杨孟林 |
| |
| 作者单位： | 西北大学热化学研究室 |
| |
| 摘 要： | 研究了四氯合锌(II)酸正十二烷铵(C12H25NH3)2ZnCl4(1)]在280-500K间的热力学性质和相变热参数. 据报导(RNH3)MX4型化合物在300-380K间有相变焓很大的固-固相变, 是很有开发前景的固-固相变低温储能材料, 本文为(1)的应用提供了精确的热数据.
|
| 关 键 词： | 铵化合物 热力学性质 相变 熵 焓 量热法 比热 十二碳化合物 氯化锌 绝热 |
Thermodynamic properties and phase transitions of alkylammonium tetrachlorometallates(II) between 280 and 500K II: Dodecylammonium tetrachlorozincate(II) |
| |
| ZHANG ZHIYING,YANG MENGLIN.Thermodynamic properties and phase transitions of alkylammonium tetrachlorometallates(II) between 280 and 500K II: Dodecylammonium tetrachlorozincate(II)[J].Acta Chimica Sinica,1988,46(3):281-284. |
| |
| Authors: | ZHANG ZHIYING YANG MENGLIN |
| |
| Abstract: | The heat capacity of (n-C12H25NH3)2ZnCl4 was measured at 280-500 K by means of an automatic adiabatic calorimeter. Two phase transitions, one solid-solid and the other solid-liq., were found at 364.3 ?0.1 and 435.1 ?0.1 K resp. The enthalpies and entropies of these transitions are 66.79 ?0.35 kJ/mol and 183.3 ?11.0 J/K mol for the solid-solid transitions, and 9.12 ?0.14 kJ/mol and 20.96 ?0.32 J/K.mol for the solid-liq. transition, resp. The selected thermodn. properties are tabulated in 10 K interval from 280 to 500 K. |
| |
| Keywords: | AMMONIUM COMPOUND THERMODYNAMIC PROPERTIES PHASE TRANSFORMATION ENTROPY ENTHALPY CALORIMETRY SPECIFIC HEAT C12 COMPOUNDS ZINC CHLORIDE THERMAL INSULATION |
|
| 点击此处可从《化学学报》浏览原始摘要信息 |
| 点击此处可从《化学学报》下载免费的PDF全文 |
