低碳化学与化工2025，Vol.50Issue(12)：30-39,10.DOI:10.12434/j.issn.2097-2547.20250075
助剂改性Fe基催化剂在高通量反应器中催化CO加氢制α-烯烃性能研究
Study on performance of promoter-modified Fe-based catalysts for CO hydrogenation to α-olefins in high-throughput reactor
邓家康 1汪天也 1李红伟 1张荣俊 1徐润1
作者信息
- 1. 中石化石油化工科学研究院有限公司,北京 100083
- 折叠
摘要
Abstract
Direct synthesis of α-olefins through CO hydrogenation catalyzed by Fe-based catalysts is one of the important ways to realize carbon resource utilization.x Fe/Zn and x Fe/Zn-y Na catalysts were prepared by co-precipitation and iso-volume impregnation methods,respectively,and they were evaluated by a sixteen-channel high-throughput reactor to realize rapid and efficient screening of catalysts.The promotional effects of Zn and Na additives on the preparation of α-olefins by Fe-based catalysts were also investigated.The catalysts before and after reaction were characterized by N2 adsorption/desorption,XRD,H2-TPR and so on.The data shows that Zn can form ZnFe2O4 solid solution with Fe during the addition process,improving the stability of catalysts.The addition of Na facilitates the activation of catalysts,promoting the formation of the active phases.1.0Fe/Zn-3.6Na((n(Fe)/n(Zn)=1.0 and w(Na)=3.6%)has the optimal catalytic performance under the reaction conditions of 340℃,2.0 MPa and volume space velocity of 54000 mL/(g·h):CO conversion rate of 48.17%,CH4 selectivity of 6.28%,alkene to alkane selectivity ratio for C2～C4 hydrocarbon products(O/P value)of 6.25 and mass fraction of α-olefins in C5～C15 hydrocarbon products increasing to 38.19%(data collection time of 48 h).For the screening of sixteen catalysts,high-throughput reactors can save about 94%of experimental time,compared with conventional single fixed-bed reactors,and perform excellently in stable control of reaction temperatures,pressures and other aspects of highly exothermic reactions.关键词
CO加氢/Fe基催化剂/α-烯烃/助剂Key words
CO hydrogenation/Fe-based catalysts/α-olefins/promoters分类
化学化工引用本文复制引用
邓家康,汪天也,李红伟,张荣俊,徐润..助剂改性Fe基催化剂在高通量反应器中催化CO加氢制α-烯烃性能研究[J].低碳化学与化工,2025,50(12):30-39,10.
