je7b00102_si_001.pdf (526.63 kB)
Specific Heat Capacities of Two Functional Ionic Liquids and Two Functional Deep Eutectic Solvents for the Absorption of SO2
journal contribution
posted on 2017-08-17, 11:19 authored by Kai Zhang, Haomin Li, Shuhang Ren, Weize Wu, Yuyun BaoThe specific heat capacities (Cp) of
four absorbents (1,1,3,3-tetramethlylguanidinium lactate, monoethanolammonium
lactate, betaine-ethylene glycol, and l-carnitine-ethylene
glycol), which can chemically absorb sulfur dioxide (SO2) with low concentrations, were measured by a Calvet BT 2.15 calorimeter
in a temperature range of 318.15 K–363.15 K. The measured specific
heat capacities as a function of temperature were correlated with
a second-order empirical polynomial equation. The result indicates
that the equation can accurately fit the measured specific heat capacities.
All the measured specific heat capacities increase with increasing
temperature. 1,1,3,3-Tetramethlylguanidinium lactate has the lowest
specific heat capacity. The measured specific heat capacities of the
four absorbents are lower than that of water, which is beneficial
to the desulfurization process.