化工学报2017，Vol.68Issue(12)：4486-4493,封2,9.DOI:10.11949/j.issn.0438-1157.20170589
氢氟烃在离子液体[HMIM][PF6]中的扩散系数和亨利常数
Diffusion coefficients and Henry's constants of six hydrofluorocarbons in ionic liquid [HMIM][PF6]
摘要
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.关键词
压力衰减法/扩散系数/亨利常数/离子液体/氢氟烃Key words
pressure decay technique/diffusion coefficient/Henry's constant/ionic liquid/hydrofluorocarbon分类
能源科技引用本文复制引用
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,封2,9.基金项目
国家杰出青年科学基金项目(51525604). supported by the National Science Fund for Distinguished Young Scholars of China (51525604). （51525604）
