Pd-Fe双金属催化剂制备与应用研究进展  

Review on research for preparation and application of Pd-Fe bimetallic catalyst

作　　者：葛伟童 嵇广雄 廖亚龙[1] 吴越 刘庆丰 李明原 GE Wei-tong;JI Guang-xiong;LIAO Ya-long;WU Yue;LIU Qing-feng;LI Ming-yuan(Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan Province,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093

出　　处：《化学工程》2021年第9期52-57,78,共7页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(21978122);昆明理工大学分析测试基金项目(2020M20192202030)。

摘　　要：综述Pd-Fe双金属催化剂的制备工艺和应用研究进展,分析制备工艺、载体、金属质量比、反应条件对催化剂结构和性能的影响。浸渍法生产方法简单、生产能力高、成本低且活性组分利用率高,但存在活性组分分布不均的缺陷;沉淀法杂质含量低,活性组分结合紧密,但存在工艺过程冗长、活性组分分散均匀程度低的劣势;控制条件并添加表面分散剂时,液相还原法可制备粒径均匀、分散性好、比表面积大的催化剂。在传统的制备过程中引入超声、微波等强化手段,可以提高活性组分的分散度,缩短制备时间,降低生产成本。Pd-Fe双金属催化剂在脱氯、加氢和氧化上都表现出优异的催化性能,在反应体系中添加单宁酸等辅助试剂可提高催化性能。The preparation process and application of Pd-Fe bimetallic catalysts were reviewed.The influences of different preparation methods on the catalytic performance,as well as the difference of catalytic effect under different support,metal mass ratio and reaction conditions were analyzed.The analysis shows that the impregnation method has the advantages of high production capacity,low cost and high utilization rate of active components at an easy operating condition.However,the impregnation method produces polluted gas and has the defects of uneven distribution of active components during the preparation.The structure with low impurity content and tightly bound active components can be obtained by precipitation method,but the process flow is lengthy and the active components are not uniformly dispersed.The catalyst prepared by liquid phase reduction method has the advantages of uniform particle size,good dispersion and large specific surface area assisted with surface dispersant.Compared with the traditional process,the introduction of ultrasonic,microwave and other strengthening methods in the preparation process can not only improve the dispersion of catalytic active components,but also shorten the preparation time and reduce the production cost.The research on the application of Pd-Fe bimetallic catalyst shows that it has excellent catalytic performance in dechlorination,hydrogenation and oxidation,and that the dechlorination rate can still be improved by adding auxiliary reagents like tannins in the reaction system.

关 键 词：Pd-Fe双金属 催化剂 制备工艺 加氢脱氯 

分 类 号：TQ426.82[化学工程]