Pore size characterization of micro-mesoporous carbons using CO2 adsorption.

Dantas S, Struckhoff KC, Thommes M, Neimark AV (2021)

Publication Type: Journal article, Original article

Subtype: other

Publication year: 2021


Publisher: Elsevier Ltd.

Book Volume: 173

Pages Range: 842-848-848

DOI: 10.1016/j.carbon.2020.11.059


Pore structure characterization plays a crucial role in the optimization of adsorption properties of nanoporous carbons employed for water purifn., gas and liq. phase sepns., carbon dioxide redn., energy storage, and other applications. Here, we present an original methodol. for evaluating the pore size distribution in carbons in a wide range of micro- and mesopores from 0.385 to 10 nm from a single isotherm of high-pressure adsorption of CO2 at 273 K. The proposed method is based on the ref. theor. isotherms calcd. by Monte Carlo simulations in model pores of slit-shaped and cylindrical geometry. The relationship between the pore size and the pore filling pressure is established. Special attention is given to the predicting of the capillary condensation transitions in mesopores by using the meso-canonical ensemble (gauge cell) Monte Carlo simulations. The proposed technique is demonstrated and verified against the conventional N2 and Ar low temp. adsorption methods drawing on the example of micro-mesoporous carbons of the CMK family. Advantages and limitations of CO2 adsorption characterization of nanoporous materials are discussed and further improvements are proposed. [on SciFinder(R)]

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Dantas, S., Struckhoff, K.C., Thommes, M., & Neimark, A.V. (2021). Pore size characterization of micro-mesoporous carbons using CO2 adsorption. Carbon, 173, 842-848-848. https://doi.org/10.1016/j.carbon.2020.11.059


Dantas, Silvio, et al. "Pore size characterization of micro-mesoporous carbons using CO2 adsorption." Carbon 173 (2021): 842-848-848.

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