期刊
JOURNAL OF CHEMICAL AND ENGINEERING DATA
卷 62, 期 9, 页码 2708-2712出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jced.7b00102
关键词
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资金
- National Natural Science Foundation of China [21176020, 21306007]
- Ministry of Finance
- Ministry of Education of PRC (BUCT)
The specific heat capacities (C-p) 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.
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