TY - JOUR
T1 - Adsorption of Difluoromethane (HFC-32) onto phenol resin based adsorbent
T2 - Theory and experiments
AU - Sultan, Muhammad
AU - Miyazaki, Takahiko
AU - Saha, Bidyut B.
AU - Koyama, Shigeru
AU - Kil, Hyun Sig
AU - Nakabayashi, Koji
AU - Miyawaki, Jin
AU - Yoon, Seong Ho
N1 - Funding Information:
The research was partially supported by Japan Science and Technology Agency (JST), Core Research for Evolutional Science and Technology (CREST). Authors acknowledge Mr. Tsutomu Sumii for the help in the experiments.
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/12
Y1 - 2018/12
N2 - Adsorption and desorption of difluoromethane (HFC-32) onto newly developed phenol resin based adsorbent (SAC-2) have been measured experimentally for the isotherm temperatures ranging from 30 °C to 130 °C and pressure up to 3 MPa. A magnetic suspension balance based adsorption measurement unit is used to measure adsorption uptake gravimetrically. The presented SAC-2/HFC-32 pair has adsorption uptake as high as 2.23 kgref/kgads (excess adsorption) and 2.34 kgref/kgads (absolute adsorption) at 30 °C and 1.67 MPa. To the best of our knowledge, it is the highest HFC-32 adsorption capacity onto any adsorbent available in the literature. The experimental data of adsorption/desorption isotherms show that there is no hysteresis for the studied pair. The data have been fitted with Tóth; Dubinin–Astakhov (D–A); and Guggenheim, Anderson, De-Boer (GAB) adsorption isotherm models. The parameters of adsorption isotherm models are optimized by nonlinear optimization technique. The D–A model fits the experimental data precisely as compared to other models. In addition, numerical values of isosteric heat of adsorption have also been extracted by means of Clausius–Clapeyron equation using adsorption isotherm models.
AB - Adsorption and desorption of difluoromethane (HFC-32) onto newly developed phenol resin based adsorbent (SAC-2) have been measured experimentally for the isotherm temperatures ranging from 30 °C to 130 °C and pressure up to 3 MPa. A magnetic suspension balance based adsorption measurement unit is used to measure adsorption uptake gravimetrically. The presented SAC-2/HFC-32 pair has adsorption uptake as high as 2.23 kgref/kgads (excess adsorption) and 2.34 kgref/kgads (absolute adsorption) at 30 °C and 1.67 MPa. To the best of our knowledge, it is the highest HFC-32 adsorption capacity onto any adsorbent available in the literature. The experimental data of adsorption/desorption isotherms show that there is no hysteresis for the studied pair. The data have been fitted with Tóth; Dubinin–Astakhov (D–A); and Guggenheim, Anderson, De-Boer (GAB) adsorption isotherm models. The parameters of adsorption isotherm models are optimized by nonlinear optimization technique. The D–A model fits the experimental data precisely as compared to other models. In addition, numerical values of isosteric heat of adsorption have also been extracted by means of Clausius–Clapeyron equation using adsorption isotherm models.
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U2 - 10.1016/j.ijheatmasstransfer.2018.07.097
DO - 10.1016/j.ijheatmasstransfer.2018.07.097
M3 - Article
AN - SCOPUS:85050556270
SN - 0017-9310
VL - 127
SP - 348
EP - 356
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
ER -