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- W2348828134 abstract "The correlations of the calcination temperature, structure and catalytic activity of the LiLa0.5Ti0.5O2-2 catalysts with main phase and major active phase of perovskite-type tnnary complex oxide LaTi1-yLiyO3-2 in the oxidative coupling of methane (OCM) have been studied. The surface and bulk structures of the analysis were characterized by means of XRD, XPS, IR, BFT and so on The results clearly indicated that the effect of calcination temperature on the activity for the oxidativc coupling of methane is twofold.On one hand, high calcination temperature is favorable for Li substitution for Ti3+ into the lattice of LaTiO3 and the production of more oxygen vacancies at which active oxygen species are formed. However, excessively high calcmution temperature makes Li substitution for Ti3+ less due to a little change of structure or phases ot the eatalyst.On the other hand, the conversion of CH4 drops because of the decrease of surface area, when the calcination temperature is raised." @default.
- W2348828134 created "2016-06-24" @default.
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- W2348828134 date "1995-01-01" @default.
- W2348828134 modified "2023-09-24" @default.
- W2348828134 title "STUDIES OF MULTICOMPONENT COMPLEX OXIDE CATALYSTS FOR OXIDATIVE COUPLING OF METHANE VII. EFFECT OF CALCINATION TEMPERATURE ON Ti-La-Li PEROVSKTTE-TYPE OXIDE CATALYSTS" @default.
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