The effect of the conditions of postsynthetic modification of CMK-3 carbon mesoporous molecular sieves on their structural and adsorption properties was studied. The specific surface, volume, pore size, and hydrogen adsorption are markedly enhanced upon activation of CMK-3 by thermal, steam, and chemical treatment using H2, CO2, H2O2, and HNO3. Analysis of the occupancy density of the mesopore surface indicated increased hydrogen adsorption capacity of the hydrogen-activated carbon surface of CMK-3. Hydrogen adsorption is increased from 1.20 to 2.23 mass % at 1 atm and 77 K by steam treatment. This effect may be employed to create efficient carbon MMS adsorbents, including composite adsorbents, for the accumulation and storage of hydrogen at high pressure (adsorption >6 mass %).
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Translated from Teoreticheskaya i Éksperimental’naya Khimiya, Vol. 45, No. 6, pp. 365-370, November-December, 2009.
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Lysenko, N.D., Yaremov, P.S., Shvets, A.V. et al. Effect of the chemical and structural modification of CMK-3 mesoporous carbon molecular sieve on hydrogen adsorption. Theor Exp Chem 45, 380–385 (2009). https://doi.org/10.1007/s11237-010-9110-9
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DOI: https://doi.org/10.1007/s11237-010-9110-9