钯基乙炔选择性加氢催化剂研究进展

doi:10.16085/j.issn.1000-6613.2018-0428

化工进展 ›› 2019, Vol. 38 ›› Issue (03): 1353-1361.DOI: 10.16085/j.issn.1000-6613.2018-0428

钯基乙炔选择性加氢催化剂研究进展

徐浩(),徐逸琦,蒋亦舒,张群峰(),李小年()

浙江工业大学工业催化研究所，绿色化学合成技术国家重点实验室培训基地，浙江杭州 310014

收稿日期:2018-03-02 修回日期:2018-05-17 出版日期:2019-03-05 发布日期:2019-03-05
通讯作者: 张群峰,李小年
作者简介:徐浩（1992—），硕士研究生，研究方向为多相催化。E-mail：hasmsx@foxmail.com。|张群峰，副研究员，主要从事炭载钯硫化物催化剂的原位合成。E-mail：zhangqf@zjut.edu.cn|李小年，教授，博士生导师，主要从事工业催化剂技术创新及其在精细有机新材料绿色合成与煤/天然气绿色转化中的应用。E-mail：xnli@zjut.edu.cn
基金资助:
国家重点基础研究发展计划(2011CB710800);国家自然科学基金(21476207、21406199、21776258);浙江省科技厅项目(2015C1042)

Research progress in palladium-based catalysts for selective hydrogenation of acetylene

Hao XU(),Yiqi XU,Yishu JIANG,Qunfeng ZHANG(),Xiaonian LI()

State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology，Institute of Industrial Catalysis of Zhejiang University of Technology，Hangzhou 310014，Zhejiang, China

Received:2018-03-02 Revised:2018-05-17 Online:2019-03-05 Published:2019-03-05
Contact: Qunfeng ZHANG,Xiaonian LI

摘要/Abstract

摘要：

催化选择加氢去除乙烯中微量乙炔是石化工业重要的反应过程，工业钯基催化剂选择性低、催化剂使用寿命较短。本文综述了近年来国内外乙炔选择性加氢钯基催化剂的研究进展。主要探讨了过渡金属、金属氧化物与非金属配体助剂能调变钯粒子空间结构，隔离分散钯粒子并与钯粒子产生电子效应；阐明了钯粒子尺寸与织构形貌的调控能改变钯的晶面结构，影响钯对乙烯的吸脱附和对氢气的活化与解离性能；评述了单一氧化物、复合金属氧化物、碳材料等载体为催化剂提供合适的表面酸碱性并加强了与活性中心之间的相互作用，稳定钯粒子抑制其发生迁移与团聚。提高乙烯选择性与催化剂稳定性是该研究的重点与难点，负载型钯基催化剂的发展方向是构建高分散钯粒子，并在反应过程中保持稳定。

关键词: 加氢, 钯, 催化剂, 选择性, 载体

Abstract:

The selective hydrogenation of ethyne in an ethene-rich stream is a critical process in petrochemical industry. Supported palladium catalysts are generally used as the semi-hydrogenation catalysts. However， several problems still exist， including poor selectivity and short catalyst lifetime. This paper reviews recent researches of the palladium-based catalysts applied in selective hydrogenation of acetylene. The transition metals， metallic oxides and nonmetallic ligands can enhance the selectivity of ethylene by modifying the structure of the active sites， isolating the palladium nanoparticles and forming electron-transport between palladium particles and promoters. The particle size and texture of palladium determine the adsorption/desorption of ethylene and the activation/dissociation of hydrogen. In addition，the supports，such as single oxides，mixed metal oxides and carbon materials can provide appropriate surface acidity and basicity and strengthen the interaction between the supports and metals to prevent the palladium nanoparticles from migration and aggregation. Improving the selectivity of ethylene and stability of catalysts the key and difficult point in this field. The developing tendency of the supported palladium catalyst is to prepare highly dispersed palladium particles and to keep them stable in the reaction process.

Key words: hydrogenation, palladium, catalyst, selectivity, support

中图分类号:

O643

徐浩,徐逸琦,蒋亦舒,张群峰,李小年. 钯基乙炔选择性加氢催化剂研究进展[J]. 化工进展, 2019, 38(03): 1353-1361.

Hao XU,Yiqi XU,Yishu JIANG,Qunfeng ZHANG,Xiaonian LI. Research progress in palladium-based catalysts for selective hydrogenation of acetylene[J]. Chemical Industry and Engineering Progress, 2019, 38(03): 1353-1361.

图/表 4

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钯基乙炔选择性加氢催化剂研究进展

Research progress in palladium-based catalysts for selective hydrogenation of acetylene

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