文献类型：期刊文献

中文题名：乙炔选择性加氢:催化剂结构敏感性分析及调控

英文题名：Selective hydrogenation of acetylene:structure sensitivity of catalysts and precise regulation

作者：李雨柔[1];葛小虎[1];曹约强[1];段学志[1];周兴贵[1];袁渭康[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2020

卷号：39

期号：12

起止页码：4845

中文期刊名：化工进展

外文期刊名：Chemical Industry and Engineering Progress

收录：CSTPCD;;EI(收录号：20205109661862);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金(21922803)。

语种：中文

中文关键词：乙炔;催化;加氢;结构敏感性;反应动力学

外文关键词：acetylene;catalysis;hydrogenation;structure-sensitivity;reaction kinetics

摘要：Pd催化乙炔选择性加氢是石脑油蒸汽裂解和煤基电石乙炔路径制备聚合级乙烯的关键。传统的Pd基催化剂使用成本较高且选择性和稳定性较差。本文综述了近年来乙炔选择性加氢催化剂结构敏感性及其调控方面的相关研究进展,重点介绍了包括活性金属粒径、纳米颗粒形貌和电子结构等对乙炔选择性加氢反应性能的重要作用,进而阐明了催化剂结构调控的目标与方向。进一步归纳总结了针对该反应特性的催化剂结构定向调控的研究进展,主要包括合金和金属间化合物催化剂、单原子及其合金催化剂的设计。通过合理地调控催化剂结构,优化关键物种的吸脱附和反应动力学行为,能够显著提高乙炔加氢催化剂的选择性及稳定性。在未来的研究中,如何针对该反应特性,构筑高效、稳定和低成本的催化剂将会是该体系催化剂研究的重点与难点。
Selective hydrogenation of acetylene catalyzed by Pd-based catalysts is crucial in the production of polymer-grade ethylene from both steam cracking process of naphtha and the coal-based acetylene feedstock.The traditional Pd-based catalysts are expensive,and exhibit poor selectivity and stability.This review summarizes recent research advances in the structure-sensitivity of catalyst and the corresponding regulation of catalysts'structures.The effects of particle sizes,morphologies and electronic structures of active metal nanoparticles on the catalytic performance are demonstrated,which provides the target of structure regulation toward enhanced performance.Furthermore,the research progress related to the precise structure regulations for the catalysts are summarized based on the characteristics of hydrogenation of acetylene,including the introduction of a second metal to prepare alloy or intermetallic compounds catalysts and the design of single atom and single atom alloy catalysts(SAC and SAA).By rationally regulating the structure of catalysts,we could optimize the adsorption/desorption behavior of key species involved in the reaction and the reaction kinetics,and then the selectivity and stability of catalysts can be significantly improved.In the future research,the rational design of highly efficient,stable and low-cost catalysts for the reaction would be the key issue.