Formation and Dissociation of Carbon Dioxide Gas Hydrate in the Pore Space of Al2O3
V. G. SMIRNOV1, A. Yu. MANAKOV2, N. V. SHIKINA3, Z. R. ISMAGILOV1,3,4
1 T. F. Gorbachev Kuzbass State Technical University, Kemerovo, Russia
2 Nikolaev Institute of Inorganic Chemistry, SB RAS, Novosibirsk, Russia
3 Boreskov Institute of Catalysis, SB RAS, Novosibirsk, Russia
4 Institute of Coal Chemistry and Material Science, Federal Research Center of Coal and Coal, Chemistry, SB RAS, Kemerovo, Russia
Keywords: hydrates, carbon dioxide, alumina, pores, sorption, phase equilibrium
Abstract
Decomposition and formation conditions of carbon
dioxide hydrate were experimentally determined in porous matrix. As
the latter, samples of γ, θ,
and α
phases of alumina with different porous structure, pore size distribution, and
specific surface area were selected. The resulting deviation values of
decomposition temperature from the equilibrium curve were compared with a
possible diameter of hydrate species computed on the ground of the
Gibbs-Thomson equations and known data about the porous structure of the used
samples. Comparative analysis of the results of this work and earlier studies
of hydrate formation processes in natural coals revealed qualitative
differences.
DOI: 10.15372/CSD20180110
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