钯基催化剂在电催化加氢脱氯技术的应用与挑战  

Application and challenges of palladium-based catalysts in electrocatalytic hydrodechlorination

作　　者：李俊熙 柳云骐[1] LI Junxi;LIU Yunqi(State Key Laboratory of Heavy Oil Processing,College of Chemistry and Chemical Engineering,China University of Petroleum(East China),Qingdao 266580,Shandong,China)

机构地区：[1]中国石油大学(华东)化学化工学院重质油国家重点实验室,山东青岛266580

出　　处：《化工进展》2024年第11期6428-6442,共15页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(22178388)。

摘　　要：电催化加氢脱氯(EHDC)技术是一种新型的高效、安全、绿色的水处理技术。钯(Pd)催化剂作为较有效的EHDC催化剂由于其易失活和价格昂贵的原因限制其工业应用。本文分析了调控Pd的形态结构(分散度、颗粒大小、晶面)、尺度效应(单原子催化剂、双原子催化剂)和电子结构调控对提升Pd的EHDC性能的研究进展,提出提升Pd对污染物的有效吸附能够提升EHDC性能。探讨了其他因素(工作电位、共存离子、pH等)对其活性的影响。对EHDC技术未来应用进行了展望,以简单方式制备Pd单原子催化剂,实现100%的原子利用率,显著降低Pd的成本,耦合可再生能源技术降低能源成本,推动工业化应用是未来的一个研究方向。Electrocatalytic hydrodechlorination(EHDC)technology is a new type of efficient,safe and environmentally friendly water treatment technology.Palladium(Pd)catalyst is the more effective EHDC catalyst,but is limited in industrial application due to its easy deactivation and high price.In this paper,the research progress on the regulations of morphological structure(dispersion,particle size,crystal plane),scale effect(single atom catalyst,double atom catalyst)and electronic structure of Pd to improve the EHDC performance is analyzed.It is proposed that the effective adsorption of pollutants over Pd can improve the EHDC performance.The effects of other factors(working potential,coexisting ions,pH,etc.)on its activity were discussed.The future application prospect of EHDC technology is outlooked,including the preparation of Pd single atom catalyst in a simple way to achieve 100%atom utilization rate and significantly reduce the cost of Pd.Meanwhile,the coupling of renewable energy technology to reduce energy cost and promote industrial application is a future research direction.

关 键 词：电化学 电催化加氢脱氯 钯基催化剂 含氯有机物 废水 

分 类 号：O643.36[理学—物理化学]