With regard to the reaction of higheralcohol synthesis(HAS),the optimizations of activity and selectivity towards C_(2+)alcohol are restricted by the improper equilibrium in two different CO activation pathways and ch...With regard to the reaction of higheralcohol synthesis(HAS),the optimizations of activity and selectivity towards C_(2+)alcohol are restricted by the improper equilibrium in two different CO activation pathways and chain growth capacity.Herein,we find that delibrately controlling the compositions of catalysts is an effective strategy to achieve the equilibrium of CO activation pathways and promote the chain growth.As a result,the optimized Cu_(0.25)Co_(0.75) alloy catalyst can achieve a large proportion of higher alcohol in alcohol products(C_(2+)OH/MeOH=4.40),together with high CO conversion of 71.27%and space-time-yield of 147.65 g kg^(-1) h^(-1).The mechanistic studies suggest that the good performance of Cu_(0.25)Co_(0.75) catalyst is attributed to the synergistic effect between alloyed Cu and Co.展开更多
基金supported by National Key Research and Development Program of China(Nos.2017YFA0403402,2019YFA0405602)National Natural Science Foundation of China(Nos.21673214,U1732272)+1 种基金Foundation of State Key Laboratory of Coal Conversion(No.J20-21-902)。
文摘With regard to the reaction of higheralcohol synthesis(HAS),the optimizations of activity and selectivity towards C_(2+)alcohol are restricted by the improper equilibrium in two different CO activation pathways and chain growth capacity.Herein,we find that delibrately controlling the compositions of catalysts is an effective strategy to achieve the equilibrium of CO activation pathways and promote the chain growth.As a result,the optimized Cu_(0.25)Co_(0.75) alloy catalyst can achieve a large proportion of higher alcohol in alcohol products(C_(2+)OH/MeOH=4.40),together with high CO conversion of 71.27%and space-time-yield of 147.65 g kg^(-1) h^(-1).The mechanistic studies suggest that the good performance of Cu_(0.25)Co_(0.75) catalyst is attributed to the synergistic effect between alloyed Cu and Co.
