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- W2360008243 abstract "Fischer-Tropsch(F-T) synthesis is a complex heterogeneous surface catalytic reaction,and hydrocarbon products is formed by surface polymerization reaction of monomer CH_2.Based on the carbide mechanism of F-T synthesis,8 models of the CO consumption rate expressions were derived.Using differential fixed bed reactor,reaction rate data were determined for CO hydrogenation on ZrO_2 modified (Co-Ru/γ-Al_2O_3) catalyst at 458～498 K,0.50～2.00 MPa,3 000～5 000 h~(-1),n__(H_2)∶n__(CO)=2.0,fitting the(kinetic) models by using experimental data at 473 K.The results indicate that the model 6,i.e.H_2 completely dissociation,formation of HCO species by adsorbed CO hydrogenation,then formation surface C and (simultaneously) O removal by H_2O through HCO species hydrogenation,is in good agreement with the(experimental) results.The rate is expressed by -dN__(CO)/dw=kp___(CO)p~~(1/2)__(H_2)/(1+1.499p~~(1/2)__(H_2)+1.609p___(CO)+(2.541p~~(-1/2)__(H_2)p___(CO))~2,) where k=(99.83) mmol/(h·g·MPa~(1.5)) at 473 K.Nonlinear-regression is carried out for the model 6 with the experimental results at 458～478 K,1.00 MPa and 5 000 h~(-1) for F-T synthesis of ZrO_2 modified Co-Ru/γ-Al_2O_3 catalyst,the activation energy,adsorption activity energy and pre-exponential factor of the model are obtained,which the activity energy is 68.34 kJ/mol." @default.
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- W2360008243 date "2006-01-01" @default.
- W2360008243 modified "2023-09-27" @default.
- W2360008243 title "Intrinsic Kinetics of ZrO_2 Modified Co-Ru/γ-Al_2O_3 Catalyst for F-T Synthesis" @default.
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