燃料化学学报（中英文）2023，Vol.51Issue(11)：1663-1672,10.DOI:10.1016/S1872-5813(23)60368-8
金属助剂对合成气制高碳醇Co/AC催化剂性能影响
Effect of metal promoters on catalytic performance of Co/AC for higher alcohols synthesis from syngas
摘要
Abstract
Shifting products of Fischer-Tropsch Synthesis(FTS)from paraffins to value-added higher alcohols receives great attention but remains great challenge.Herein,metal oxides of Mn,Zn,La and Zr are investigated as promoters to tune the activity and product distributions of Co/AC catalyst for syngas conversion.It is found that these promoters show different promotion effect on CO dissociation rate,the formation of Co2C phase and the alcohols selectivity.The formed Co2C/Co0 constitutes the dual active site for higher alcohols synthesis.The strongest CO dissociation rate is observed for Zn-promoted Co/AC catalyst,resulting in the highest activity and space-time yield(STY)of alcohols.The Mn promoter is most conducive to the formation of Co2C,but slightly decreases the activity.The similar CO dissociation rate and CO conversion are obtained over both Zr-and La-promoted Co/AC catalysts,but the Zr-promoted Co/AC catalyst exhibits the highest alcohols selectivity due to the function balance between CO non-dissociative insertion and CO dissociation.关键词
合成气/高碳醇合成/CO加氢/助剂/碳化钴Key words
syngas/higher alcohols/CO hydrogenation/promoter/cobalt carbide分类
化学工程引用本文复制引用
郭磊,刘培功,龚坤,齐行振,林铁军..金属助剂对合成气制高碳醇Co/AC催化剂性能影响[J].燃料化学学报（中英文）,2023,51(11):1663-1672,10.基金项目
The project was supported by Natural Science Foundation of China(22072177),Natural Science Foundation of Shanghai(21ZR1471700)and Shanghai Youth Science and Technology Talents Sailing Program(21YF1453600). （22072177）
