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The Relationship between CO2 Adsorption and Microporous Volume in a Porous Carbon Material

  • INNOVATIVE TECHNOLOGIES OF OIL AND GAS
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Chemistry and Technology of Fuels and Oils Aims and scope

In this work, we have characterized four types of porous carbon material by N2 adsorption at 77 K and CO2 adsorption at the freezing point. The results show that both the BET equation based on the N2 adsorption isotherm and the D-A model parameters obtained from the CO2 adsorption isotherm are not applicable for analyzing the CO2 adsorption characteristics in porous carbon materials. The density functional theory (DFT) analysis results of the CO2 adsorption isotherm show that the adsorption of CO2 in a porous carbon material occurs mainly in micropores, and the micropore volume calculated by the DFT model is in good agreement with the adsorption isotherm. Therefore, the DFT model based on the CO2 adsorption isotherm is a reliable characterization method and can accurately reflect the CO2 adsorption characteristics of activated carbon.

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Authors and Affiliations

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China

    Yongjie Wei, Junchao Wang, Chen Gu & Zhengfei Ma

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  1. Yongjie Wei
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  2. Junchao Wang
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  3. Chen Gu
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  4. Zhengfei Ma
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Correspondence to Zhengfei Ma.

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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 6, pp. 57 – 61, November – December, 2020.

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Wei, Y., Wang, J., Gu, C. et al. The Relationship between CO2 Adsorption and Microporous Volume in a Porous Carbon Material. Chem Technol Fuels Oils 56, 932–940 (2021). https://doi.org/10.1007/s10553-021-01210-5

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