甘油高值化转化中的电催化剂筛选及调控  

Screening and regulation of electrocatalysts for high-value conversion of glycerol

作　　者：李志伟[1] 高媛[1] 金华 熊昆[1] 张海东[1] LI Zhi-wei;GAO Yuan;JIN Hua;XIONG Kun;ZHANG Hai-dong(Engineering Research Center for Waste Oil Recovery Technology and Equipment,Ministry of Education,College of Environment and Resources,Chongqing Technology and Business University,Chongqing 400067,China)

机构地区：[1]重庆工商大学废油资源化技术与装备教育部工程研究中心,环境与资源学院,重庆400067

出　　处：《化学研究与应用》2023年第7期1505-1513,共9页Chemical Research and Application

基　　金：国家自然科学基金项目(22078032)资助;重庆市教委科学技术研究重大/重点项目(KJZD-M202100802,KJZD-K201900805)资助;重庆市研究生科研创新项目(CYS22612)资助。

摘　　要：甘油作为生物柴油生产过程中的主要副产物,具有廉价、无毒、可生成高附加值产物等优点,成为环境中过剩资源高效利用的重要原料。在众多甘油资源化转化途径中,电催化氧化甘油由于反应条件温和、绿色无害、过程易控制等优点而备受关注,同时甘油电催化氧化反应(GEOR)起始电位远低于电解水析氧反应(OER),因此,利用GEOR替代OER,与电解水析氢反应(HER)耦合,可实现甘油资源化利用与电解水制氢的“一箭双雕”效果,对高价值的精细化学品发展和“绿氢”的节能制备具有重要的研究意义和价值。其中,如何设计构筑高效的电催化剂促进GEOR并调控产物的选择性是当前研究的重点。为此,结合本课题组的研究工作,综述了近年来国内外关于GEOR的最新研究进展,重点梳理了电催化剂的筛选策略及其形貌、组分、电子结构的调控对提升GEOR催化活性、稳定性和产物选择性的影响,并对GEOR电催化剂所面临的挑战和发展方向进行了展望。Glycerol,as the main by-product in biodiesel production,has the advantages of low cost,non-toxic and high value-added products,and has become an important raw material for efficient utilization of excess resources in the environment.Among many glycerol conversions,glycerol electrocatalytic oxidation reaction(GEOR)has attracted much attention due to its advantages of mild reaction,green and controllable process.Furthermore,GEOR is much lower than the initial potential of anode oxygen evolution reac-tion(OER)from water electrolysis.Therefore,the utilization of glycerol resources and energy-saving hydrogen production from water splitting can be achieved by using GEOR to replace OER and couple with cathode hydrogen evolution reaction(HER)from water e-lectrolysis,that is“A stone kills two birds”,which is significant for the development of high-value fine chemicals and the energy-saving production of green hydrogen.The key of the technology is how to design high-efficient electrocatalysts to promote GEOR and effectively regulate product selectivity.Herein,this paper mainly reviews the latest progress of GEOR in recent years,and focuses on the summaries of the screening strategies of electrocatalysts and the influence of their regulation of the morphology,components and electronic structure on improving electrocatalytic activity,stability and product selectivity during GEOR process.Finally,the challen-ges and development directions of GEOR elctrocatalysts is proposed to provide a guideline for the rational design of high perform-ance electrocatalysts.

关 键 词：电催化氧化 甘油 电催化剂 产物选择性 调控 

分 类 号：TQ645.5[化学工程—精细化工] TQ153.6