Article citationsMore>>
Xing, W., Liu, C., Zhou, Z., Zhang, L., Zhou, J., Zhuo, S., Yan, Z., Gao, H., Wang, G. and Qiao, S. (2012) Superior CO2 Uptake of N-Doped Activated Carbon through Hydrogen-Bonding Interaction. Energy & Environmental Science, 5, 7323-7327.
https://doi.org/10.1039/c2ee21653a
has been cited by the following article:
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TITLE:
Investigation of Non-Thermodynamical CO2 Adsorption Behavior for Amine-Modified Nanoporous Silica
AUTHORS:
Kazuhisa Yano, Norihiko Setoyama, Kenzo Fukumori
KEYWORDS:
CO2 Adsorption, Nanoporous Silica, Temperature Dependence, Pulsed NMR Measurement, Spin-Spin Relaxation Time
JOURNAL NAME:
Advances in Materials Physics and Chemistry,
Vol.10 No.3,
March
25,
2020
ABSTRACT: Non-thermodynamical CO2 adsorption behavior for amine-modified nanoporous silica is clarified by evaluating the mobility of organic functional
group inside mesopores by using pulsed NMR technique. CO2 adsorption
behavior of nanoporous silica modified with amino-propyl silane (AP) changes significantly
depending on the amount of AP loaded. A low AP loaded sample shows normal
adsorption behavior; the amount of CO2 adsorbed decreases with
increasing temperature. In contrast, a high AP loaded sample possesses
non-thermodynamic CO2 adsorption behavior in which the amount of CO2 adsorbed increases with increasing temperature in within a certain temperature
range. To address the mechanism, a pulsed NMR technique was employed to clarify
the mobility of AP molecules, and it was found that the mobility of mobile
components in a high AP loaded sample increased drastically with increasing temperature
while the mobility in a low AP loaded sample remained unchanged. It is
understood that the enhancement of the diffusion of CO2 inside nanopores
leads to the non-thermodynamic adsorption behavior.
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