化工进展2019，Vol.38Issue(3)：1353-1361,9.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
Research progress in palladium-based catalysts for selective hydrogenation of acetylene
摘要
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.关键词
加氢/钯/催化剂/选择性/载体Key words
hydrogenation/palladium/catalyst/selectivity/support分类
化学化工引用本文复制引用
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(3):1353-1361,9.基金项目
国家重点基础研究发展计划(2011CB710800) （2011CB710800）
国家自然科学基金(21476207、21406199、21776258) （21476207、21406199、21776258）
浙江省科技厅项目(2015C1042) （2015C1042）
