| 氢氟烃在离子液体[HMIM][PF6]中的扩散系数和亨利常数 |
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| 引用本文： | 刘向阳,潘培,彭三国,何茂刚,贺永东. 氢氟烃在离子液体[HMIM][PF6]中的扩散系数和亨利常数[J]. 化工学报, 2017, 68(12): 4486-4493. DOI: 10.11949/j.issn.0438-1157.20170589 |
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| 作者姓名： | 刘向阳 潘培 彭三国 何茂刚 贺永东 |
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| 作者单位： | 1.西安交通大学热流科学与工程教育部重点实验室, 陕西 西安 710049;2.新疆大学物理科学与技术学院, 新疆 乌鲁木齐 830000 |
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| 基金项目： | 国家杰出青年科学基金项目（51525604）。 |
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| 摘 要： | 氢氟烃+离子液体是一种非常有潜力的吸收式制冷循环工质对。利用压力衰减法测量了303.15～343.15 K范围内6种氢氟烃（R32、R125、R161、R143a、R1234yf、R152a）在离子液体1-已基-3-甲基咪唑（钅翁）六氟磷酸盐（[HMIM][PF6]）中的扩散系数和亨利常数。结果表明：6种氢氟烃在[HMIM][PF6]中的扩散系数和亨利常数均随着温度的升高而增大。在6种氢氟烃中,因R32在[HMIM][PF6]中具有较大的溶解度和扩散系数,所以R32+[HMIM][PF6]较适合作为吸收式制冷循环的工质对。最后,采用Arrhenius方程对6种氢氟烃在[HMIM][PF6]中的扩散系数和亨利常数进行了关联,计算结果与实验数据的平均绝对相对偏差分别小于2.5%和6.0%。
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| 关 键 词： | 压力衰减法 扩散系数 亨利常数 离子液体 氢氟烃 |
| 收稿时间： | 2017-05-10 |
| 修稿时间： | 2017-09-27 |
Diffusion coefficients and Henry's constants of six hydrofluorocarbons in ionic liquid [HMIM] [PF6] |
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| LIU Xiangyang,PAN Pei,PENG Sanguo,HE Maogang,HE Yongdong. Diffusion coefficients and Henry's constants of six hydrofluorocarbons in ionic liquid [HMIM] [PF6][J]. Journal of Chemical Industry and Engineering(China), 2017, 68(12): 4486-4493. DOI: 10.11949/j.issn.0438-1157.20170589 |
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| Authors: | LIU Xiangyang PAN Pei PENG Sanguo HE Maogang HE Yongdong |
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| Affiliation: | 1.Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China;2.School of Physical Science and Technology, Xinjiang University, Urumqi 830000, Xinjiang, China |
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| Abstract: | Hydrofluorocarbon + ionic liquid is a potential working pair for the absorption refrigeration cycle. A pressure decay technique was used to measure the diffusion coefficients and Henry's constants of six hydrofluorocarbons (R32, R125, R161, R143a, R1234yf and R152a) in 1-hexyl-3-methylimidazolium hexafluorophosphate ([HMIM] [PF6]) in the temperature range from 303.15 K to 343.15 K. The experimental results show that the diffusion coefficients and Henry's constants of six hydrofluorocarbons in [HMIM] [PF6] increase with the increasing temperature. Compared with other five hydrofluorocarbons, R32 not only exhibits higher solubility but also higher diffusivity. Therefore, R32 + [HMIM] [PF6] is very suitable for the absorption refrigeration cycle. The Arrhenius equation was applied to correlate the diffusion coefficients and Henry's constants of six hydrofluorocarbons in [HMIM] [PF6]. The average absolute relative deviations between the calculated results and the experimental data were less than 2.5% and 6.0%, respectively. |
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| Keywords: | pressure decay technique diffusion coefficient Henry's constant ionic liquid hydrofluorocarbon |
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