LIU Xiangyang, PAN Pei, PENG Sanguo, et al. Diffusion coefficients and Henry's constants of six hydrofluorocarbons in ionic liquid [HMIM] [PF6][J]. CIESC Journal, 2017, (12): 4486-4493. DOI: 10.11949/j.issn.0438-1157.20170589.
LIU Xiangyang, PAN Pei, PENG Sanguo, et al. Diffusion coefficients and Henry's constants of six hydrofluorocarbons in ionic liquid [HMIM] [PF6][J]. CIESC Journal, 2017, (12): 4486-4493. DOI: 10.11949/j.issn.0438-1157.20170589.DOI:
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%