Effect of the chemical and structural modification of CMK-3 mesoporous carbon molecular sieve on hydrogen adsorption |
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Authors: | N D Lysenko P S Yaremov A V Shvets V G Il’in |
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Institution: | (1) Hiden Isochema Ltd, Europa Boulevard 231, Warrington, WA5 7TN, UK;; |
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Abstract: | 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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