石油化工2026，Vol.55Issue(5)：660-666,7.DOI:10.3969/j.issn.1000-8144.2026.05.002
Pd/SiC催化乙炔选择性加氢反应性能及构效研究
Performance and structure-activity relationship of Pd/SiC catalyst in selective hydrogenation of acetylene
摘要
Abstract
The Pd/SiC catalyst,with high-thermal-conductivity SiC as the support,was prepared by the sol-immobilization method and applied in selective hydrogenation of acetylene.The structure-property relationship of the prepared Pd/SiC catalyst was investigated using characterization methods such as HRTEM,CO-FTIR,XRD,and XPS,as well as computational fluid dynamics(CFD)simulation.The experimental results show that compared with the commonly used Pd/Al2O3,Pd/SiC exhibits higher intrinsic activity(the conversion frequency of 0.029 6 s-1),higher ethylene selectivity(conversion of 92%with selectivity of 73%),and better sintering resistance.The characterization results indicate that the high activity is attributed to the higher Pd dispersion,while the high selectivity stems from the higher electron density of Pd.CFD simulation analysis reveals that the excellent thermal conductivity of Pd/SiC can effectively suppress the temperature rise of the catalyst bed,thereby enhancing the sintering resistance of the catalyst.关键词
乙炔选择性加氢/分散度/电子云密度/导热性Key words
acetylene selective hydrogenation/dispersion/electron density/thermal conductivity分类
化学化工引用本文复制引用
杨甜星,魏子荣,贺宇飞..Pd/SiC催化乙炔选择性加氢反应性能及构效研究[J].石油化工,2026,55(5):660-666,7.基金项目
国家重点研发计划青年科学家项目(2022YFA1506200) （2022YFA1506200）
连云港市科技项目(JCYJ2402) （JCYJ2402）
2025年江苏高校"青蓝工程"优秀青年骨干教师培养项目 （）
国家自然科学基金项目(U23B20164). （U23B20164）
