Journal
RESEARCH ON CHEMICAL INTERMEDIATES
Volume 46, Issue 3, Pages 1881-1907Publisher
SPRINGER
DOI: 10.1007/s11164-019-04070-1
Keywords
Ethylbenzene; Styrene; Co3O4; La2O3; MgO; CO2
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A series of lanthanum oxide (La2O3-2-14 wt%)-encapsulated Co3O4/MgO catalysts and bare Co/MgO solid oxides were prepared by wetness impregnation method. Among all catalysts, La2O3-promoted Co3O4/MgO (CM) was found to be remarkable in terms of superior promotional effect of La oxide species. Therefore, La2O3-incorporated Co3O4/MgO (LCM) catalysts afforded unusual catalytic activity efficiency with respect to high EB conversion and styrene selectivity due to the synergistic effect of Co-La species. By contrast, bare Co3O4/MgO solid oxide (CM) catalyst afforded low EB conversion with mild catalytic activity due to the absence of promotional role of La oxide.
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