用于将二氧化碳电化学还原为C1-C5碳氢化合物的钯金催化剂。
Palladium-gold catalyst for the electrochemical reduction of CO2 to C1-C5 hydrocarbons.
作者信息
Kortlever R, Peters I, Balemans C, Kas R, Kwon Y, Mul G, Koper M T M
机构信息
Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands.
PhotoCatalytic Synthesis Group, MESA+ Institute for Nanotechnology, Faculty of Science and Technology, University of Twente, Ennschede, The Netherlands.
出版信息
Chem Commun (Camb). 2016 Aug 11;52(67):10229-32. doi: 10.1039/c6cc03717h.
Copper is a unique electrocatalyst for CO2 reduction, since it is one of the few catalysts able to produce methane, ethylene and ethane from CO2 with decent faradaic efficiencies. Here we report on the design and synthesis of a new non-copper-containing catalyst able to reduce CO2 to C1 to C5 hydrocarbons. This catalyst was designed by combining a metal that binds CO strongly, Pd, with a metal that binds CO weakly, Au, in an attempt to tune the binding energy of CO. We show that a mixture of C1-C5 hydrocarbons and soluble products are produced from an onset potential of -0.8 VRHE. We propose that the higher hydrocarbons are formed via a polymerization of -CH2 groups adsorbed on the catalyst surface.
铜是一种独特的用于二氧化碳还原的电催化剂，因为它是少数能够以相当高的法拉第效率从二氧化碳中产生甲烷、乙烯和乙烷的催化剂之一。在此，我们报告一种新型非含铜催化剂的设计与合成，该催化剂能够将二氧化碳还原为C1至C5烃类。这种催化剂是通过将一种能强烈结合一氧化碳的金属钯与一种能弱结合一氧化碳的金属金相结合来设计的，旨在调节一氧化碳的结合能。我们表明，从-0.8 VRHE的起始电位开始会产生C1 - C5烃类和可溶性产物的混合物。我们提出，高级烃类是通过吸附在催化剂表面的-CH2基团聚合形成的。
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