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二氧化碳电还原制乙醇催化体系与材料研究进展

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利用二氧化碳电催化还原(CO2RR)技术可将CO2直接转化为燃料或高附加值化学品,是当前缓解资源、环境等问题的有效途径之一.在CO2RR产物中,乙醇具有相对较高的能量密度和经济附加值,但由于基元过程复杂且易受传质与副产析氢的影响,该过程常常伴随高过电位、低反应速率等系列问题.为此,重点介绍利用体系耦合的"过程串联",活性位点耦合的"反应串联",以及凸显"电子效应"、"应变效应"和"限域效应"的"反应协同"进行CO2RR制乙醇催化体系的设计思路及相关电催化材料的研究进展.最后,指出"串联催化"和"协同催化"是当前电催化体系设计的两种主要策略;在不同的电催化策略下,基于机理的催化材料设计是CO2RR制乙醇过程活性提升的关键.
Research progress of catalytic system and materials for electrocatalytic reduction of carbon dioxide to ethanol
Carbon dioxide electrocatalytic reduction(CO2RR)technology which converts CO2 into fuel and high value-added chemicals is one of the effective ways to alleviate the current resources,environment,and many other problems.Among numerous products of CO2RR,ethanol has a relatively high energy density and economic value.However,due to the complex elementary process,and it is affected by the mass transfer and by-product hydrogen evolution,the process of CO2RR-to-ethanol is often accompanied by a series of problems such as high potential,low reaction,and low selectivity.Therefore,the current design ideas of CO2RR to ethanol catalytic system and the research progress of catalytic materials by using the"tandem process"of system coupling,the"tandem reaction"of active site coupling,and the"synergy reaction"that highlights the"electronic effect","strain effect"and"confinement effect"were reviewed.It was proposed that"tandem catalysis"and"synergy catalysis"were the two main strategies for the design of electrocatalytic systems at present.It was also suggested that mechanism-based catalysts design was the key to improving the performance of CO2RR to ethanol pro-cess under different electrocatalytic strategies.

carbon dioxide electrocatalytic reductiontandem catalysissynergy catalysiselectrochemistryethonal

王挺、章文文、毛庆、吕丽、刘长珍

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中国核工业中原建设有限公司,北京 100070

大连理工大学化工学院,辽宁大连 116023

国民核生化灾害防护国家重点实验室,北京 100091

二氧化碳电还原 串联催化 协同催化 电催化 乙醇

国家自然科学基金项目

22179016

2024

无机盐工业
中海油天津化工研究设计院 中国化工学会无机酸碱盐专业委员会

无机盐工业

CSTPCD北大核心
影响因子:0.489
ISSN:1006-4990
年,卷(期):2024.56(7)
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