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@article{ART002605847},
author={Kim Moon Hyeon and Choi Sang Ok and Choo Soo Tae},
title={A role of the microtextural and surface chemical heterogeneities of porous carbons for the adsorption of CO2, CO and N2},
journal={Carbon Letters},
issn={1976-4251},
year={2019},
volume={29},
number={6},
pages={553-566},
doi={10.1007/s42823-019-00055-7}

TY - JOUR
AU - Kim Moon Hyeon
AU - Choi Sang Ok
AU - Choo Soo Tae
TI - A role of the microtextural and surface chemical heterogeneities of porous carbons for the adsorption of CO2, CO and N2
JO - Carbon Letters
PY - 2019
VL - 29
IS - 6
PB - Korean Carbon Society
SP - 553
EP - 566
SN - 1976-4251
AB - Microtextural and surface chemical heterogeneities of activated carbons (AC) have been studied to see their distinctive role for the adsorption of CO2, CO and N2 at 25 °C and up to 850 Torr. Not only the microtextural properties influence the adsorption of the gases, particularly CO2, but the chemical surface heterogeneity also plays a significant role for CO2 adsorption. The volume of ultramicropores < 7 Å is of predominantly importance in high CO2 adsorption at pressures above 30 Torr. However, the average size of micropores and their size distribution, and the chemical surface heterogeneity are much more critical at the Henry’s law region (< 30 Torr). The latter could be well characterized by the amount and Henry constant of CO2 adsorption at the low pressures, the Toth model parameters, the change in CO2/CO and CO2/N2 selectivities with respect to pressure, the amount of CO from the thermal decomposition, and the direct probing of very strong basicity sites using a technique that is the temperature-programmed desorption of CO2 adsorbed. All of them are consistent with the difference in the energetic nonuniformity between ACs studied, except for the last measure whose results could be reasonably explained when combining with the microtextural heterogeneity.
KW - CO2 adsorption Microporous carbons Microtextural heterogeneity Chemical surface heterogeneity Surface basicity
DO - 10.1007/s42823-019-00055-7
ER -

Kim Moon Hyeon, Choi Sang Ok and Choo Soo Tae. (2019). A role of the microtextural and surface chemical heterogeneities of porous carbons for the adsorption of CO2, CO and N2. Carbon Letters, 29(6), 553-566.

Kim Moon Hyeon, Choi Sang Ok and Choo Soo Tae. 2019, "A role of the microtextural and surface chemical heterogeneities of porous carbons for the adsorption of CO2, CO and N2", Carbon Letters, vol.29, no.6 pp.553-566. Available from: doi:10.1007/s42823-019-00055-7

Kim Moon Hyeon, Choi Sang Ok, Choo Soo Tae "A role of the microtextural and surface chemical heterogeneities of porous carbons for the adsorption of CO2, CO and N2" Carbon Letters 29.6 pp.553-566 (2019) : 553.

Kim Moon Hyeon, Choi Sang Ok, Choo Soo Tae. A role of the microtextural and surface chemical heterogeneities of porous carbons for the adsorption of CO2, CO and N2. 2019; 29(6), 553-566. Available from: doi:10.1007/s42823-019-00055-7

Kim Moon Hyeon, Choi Sang Ok and Choo Soo Tae. "A role of the microtextural and surface chemical heterogeneities of porous carbons for the adsorption of CO2, CO and N2" Carbon Letters 29, no.6 (2019) : 553-566.doi: 10.1007/s42823-019-00055-7

Kim Moon Hyeon; Choi Sang Ok; Choo Soo Tae. A role of the microtextural and surface chemical heterogeneities of porous carbons for the adsorption of CO2, CO and N2. Carbon Letters, 29(6), 553-566. doi: 10.1007/s42823-019-00055-7

Kim Moon Hyeon; Choi Sang Ok; Choo Soo Tae. A role of the microtextural and surface chemical heterogeneities of porous carbons for the adsorption of CO2, CO and N2. Carbon Letters. 2019; 29(6) 553-566. doi: 10.1007/s42823-019-00055-7

Kim Moon Hyeon, Choi Sang Ok, Choo Soo Tae. A role of the microtextural and surface chemical heterogeneities of porous carbons for the adsorption of CO2, CO and N2. 2019; 29(6), 553-566. Available from: doi:10.1007/s42823-019-00055-7

Kim Moon Hyeon, Choi Sang Ok and Choo Soo Tae. "A role of the microtextural and surface chemical heterogeneities of porous carbons for the adsorption of CO2, CO and N2" Carbon Letters 29, no.6 (2019) : 553-566.doi: 10.1007/s42823-019-00055-7