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- W2040773617 abstract "The interaction between the components of LiClo3O4 and LiOHCo3O4 catalysts for oxidative coupling of methane has been studied by ESR, TPR and specific surface area measurements. The interaction between Co3O4 and LiCl begins at temperatures higher than the melting point of LiCl, lithium—cobalt spinels with a low lithium content (about 0.03 at.%) being obtained. Lithium—cobalt spinels with a much higher lithium content (more than 2.5 at.%) and a LiCoO2 phase are obtained from Co3O4 and LiOH. The higher activity and selectivity of LiClCo3O4 for oxidative coupling of methane in comparison with LiOHCo3O4 are related to surface effects rather than to formation of mixed LiCo oxide phases. LiCl modifies spinel morphology and forms a dense layer over the spinel crystallites. The effect of water vapour (a reaction product of the oxidative coupling of methane) on the catalyst stability is discussed. Water vapour initiates the interaction between LiCl and Co3O4 due to LiCl hydrolysis, and thus mixed lithium—cobalt spinel oxides with a higher lithium content are obtained. At higher heating temperatures, there occurs a parallel process of extraction of Li+ from the interstices of the spinel lattice under the effect of HCl and H2O from the reaction medium." @default.
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- W2040773617 date "1992-12-01" @default.
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- W2040773617 title "Interaction between the components of a LiClCo3O4 catalyst for oxidative coupling of methane" @default.
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- W2040773617 doi "https://doi.org/10.1016/0304-5102(92)80213-z" @default.
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