Abstract
Carbon fiber adsorbents based on hydrated cellulose fiber, in which the transport porosity is absent, due to which the micropores become readily accessible towards adsorptive molecules have been studied. The aim of this work is to study the influence of the conditions of sorbent synthesis on their adsorption properties. The state of the surface of pristine carbon fiber has been determined, and the porous structure of activated carbon fibers has been estimated. It has been found that, when activating the cloth with a temperature of heat treatment of 1070–1270 K, it becomes possible to obtain the adsorbent with good molecular-sieve characteristics, although with the relatively small micropore volume. It has been suggested that it is linked with the restructuring of the carbon fiber structure that takes place at the activation temperature in cloths. During the study, it has been experimentally found and confirmed that the adsorption properties of sorbents obtained differ depending on the synthesis conditions and the surface state.
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Voloshchuk, A.M., Khokhlova, G.P., and Kryazhev, Yu.G., Effect of the activation temperature and the addition of molybdenum oxides on the porous structure of activated carbon fibers based on hydrated cellulose, Khim. Tverd. Topl. (Moscow), 2005, no. 4, p.85.
Fridman, L.I., Apparatus design of steam-gas activation of carbon fibrous materials, Khim. Volokna, 2008, no. 5, p.60.
Voloshchyuk, A.M., Dubinin, M.M., Moskovskaya, T.A., et al., Porous structure and chemical condition of the surface of carbon adsorbents, Izv. Akad. Nauk SSSR, Ser. Khim., 1988, no. 2, p.277.
Dubinin, M.M., Microporous structures and adsorption properties of carbonaceous adsorbents, Carbon, 1983, vol. 21, no. 4, p.359.
Gregg, S.J. and Sing, K.S.W, Adsorption, Surface Area and Porosity, London: Academic, 1982, 2nd ed.
Shil'yakova, S.E., Effect of the conditions of producing carbon fiber adsorbents from a hydrate-cellulosed fabric on their structural and process characteristics, Cand. Sci. (Eng.) Dissertation, Moscow: Mendeleev Univ. of Chemical Technology of Russia, 1991.
Gorlov, V.A., Nagorbina, L.A., Shil’yakova, S.E., and Fedoseev, S.D., Application of potentiodynamic curves for assessing the reduction-oxidation properties of the surface of carbon fiber adsorbents, Izv. Akad. Nauk SSSR, Ser. Khim., 1990, no. 3, p. 713.
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Original Russian Text © S.E. Lyashenko, I.V. Soboleva, V.M. Drobyshev, 2018, published in Teoreticheskie Osnovy Khimicheskoi Tekhnologii, 2018, Vol. 52, No. 1, pp. 103–107.
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Lyashenko, S.E., Soboleva, I.V. & Drobyshev, V.M. Effect of the Preparation Conditions of Carbon Fiber Adsorbents on Their Adsorption Capacity. Theor Found Chem Eng 52, 97–101 (2018). https://doi.org/10.1134/S0040579518010116
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DOI: https://doi.org/10.1134/S0040579518010116