摘要
烷烃加氢异构反应在化学工业中起重要作用,由于双功能催化剂上金属位和酸位两种位点间复杂的协同作用,制备具有优异加氢异构性能的催化剂仍是一个挑战。为进一步提升催化剂性能,需要优化金属位点与酸位点间的平衡关系,良好的金属-酸平衡状态有助于提高催化剂的异构产物选择性。首先介绍烷烃加氢异构反应中的双功能机理,从金属位和酸位间数量平衡与距离平衡两个方面概述近年来该催化体系中金属-酸平衡相关研究成果,综述部分优化催化剂金属-酸平衡性质的改性方法。
The hydroisomerization of alkanes plays an increasingly important role in the chemical industry.However,due to the complex synergistic effect between the metal and acid sites on bifunctional catalysts,preparing catalysts with excellent hydroisomerization performance remains a challenge.To further improve the performance of the catalyst,it is necessary to optimize the equilibrium relationship between metal sites and acid sites,and a good metal acid equilibrium state helps to improve the selectivity of isomeric products in the catalyst.This review first introduces the bifunctional mechanism in the hydroisomerization of alkanes,and then summarizes the relevant research results of metal-acid balance between metal sites and acid sites in this catalytic system in recent years from two aspects:concentration balance and distance balance.Finally,some modification methods for optimizing the metal-acid balance of catalysts are exampled.
作者
张明伟
冯传密
王聪
Zhang Mingwei;Feng Chuanmi;Wang Cong(China Tianchen Engineering Co.,Ltd.,Tianjin 300400,China)
出处
《工业催化》
CAS
2024年第5期18-25,共8页
Industrial Catalysis
基金
中国天辰科技专项。
关键词
催化化学
加氢异构
烷烃
金属-酸平衡
催化剂改性
catalytic chemistry
hydroisomerization
alkane
metal-acid balance
catalyst modification
作者简介
张明伟,1993年生,男,河北省承德市人,工学博士,工程师,从事工业催化剂研究;通讯联系人:王聪,教授级高工,从事工业催化研究和流程模拟。E-mail:aa-wcong@cntcc.cn。
