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In this paper, the effect on the physico-chemical properties and catalytic performance of CeO2-modified Co/ZrO2 catalysts were investigated in the Fischer–Tropsch synthesis (FTS) reaction. The CeO2-promoted catalysts with CeO2/ZrO2 ratios of 5wt% and 10wt% (denoted as 5 and 10) were prepared by the sequential incipient wetness method. The catalysts and/or supports were characterized by N2 adsorption-desorption,...
A theoretical understanding of CH 4 dissociation on Ni-based catalysts is of great importance for the development of CH 4 reforming catalysts with high activity and carbon-deposition resistance. Based on comparisons of CH 4 dissociation on perfect and defective MgO supported Ni 4 , as well as Ni(111), the effects of the strong interactions between Ni 4 and MgO...
Density functional theory (DFT) has been applied to investigate the adsorptions of CH 4 , CH 3 , CH 2 , CH, C, H and dissociations CH 4 , CH 3 , CH 2 , CH on the (111) catalyst surfaces of elementary metals Co bimetals NiFe. More important, the adsorptions and dissociations of those adspecies on elementary metals (Fe, Co, Ni and Cu) and bimetals (NiFe,...
A modified two-stage quartz reactor was designed to further investigate the mechanism of sulfur transformation based on the interactions between volatiles and char during brown coal pyrolysis at different temperatures. With the two-stage reactor, the active volatiles generated from the coal fast pyrolysis can be in direct contact with the nascent char produced from the coal temperature-programmed...
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