| 含水C_4烷烃系统高压相平衡和临界现象与其他含水烷烃系统的比较 |
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| 引用本文： | 田宜灵,李全生,董习靖,任晓文,张凤才.含水C_4烷烃系统高压相平衡和临界现象与其他含水烷烃系统的比较[J].天津大学学报(英文版),1995(2). |
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| 作者姓名： | 田宜灵 李全生 董习靖 任晓文 张凤才 |
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| 摘 要： | 利用具有光学宝石窗和电磁搅拌的高压釜测定了正了烷和异丁烷两个含水体系高温高压下的相平衡数据．温度和压力范围分别为５００Ｋ到６６０Ｋ和１０ＭＰａ到３００ＭＰａ左右．两个体系的临界曲线都是从纯水的临界点开始，首先趋向于较高压力和较低温度，经过一个温度最小值然后伸向高温高压方向．两个体系的温度极小值分别为６２４Ｋ和６２５Ｋ．还给出了相界面上的过剩体积．实验结果与其正烷烃－水体系的临界数据进行了比较．
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| 关 键 词： | 临界现象，高压，异丁烷，正了烷，溶液，水 |
A COMPARISON OF HIGH PRESSURE PHASE EQUILIBRIA AND ORITIOAL PHENOMENA FOR AQUEOUS C_4-ALKANE-SYSTEMS WITH OTHER ALKANES SYSTEMS |
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| Tian yiling, Li Quansheng,Dong Xijing,Ren Xiaowen,Zhang Fengcai.A COMPARISON OF HIGH PRESSURE PHASE EQUILIBRIA AND ORITIOAL PHENOMENA FOR AQUEOUS C_4-ALKANE-SYSTEMS WITH OTHER ALKANES SYSTEMS[J].Transactions of Tianjin University,1995(2). |
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| Authors: | Tian yiling Li Quansheng Dong Xijing Ren Xiaowen Zhang Fengcai |
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| Institution: | Dept. of Chemistry |
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| Abstract: | In an optical high--pressure autoclave with saphire windows and magnetic stirring, phase equilibria data in mixtures of water-n--butane and water-iso--butane were measured in a temperature range from 500K to 600K and at a pressure from 10MPa to 300MPa. The critical curves of these systems start at the critical point of pure water and tend to higher pressures and lower temperatures. These curves pass a temperature minima 624K and 625K respectively and then tend to a high temperature and pressure. Excess volumes on the phase equilibria surface were given. The results are discussed in view of the phase equilibria of other water--n--alkane systems. |
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| Keywords: | critical phenomena high pressure iso-butane n--butane solution water |
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