浸渍纳米多孔铜作为糠醛电催化加氢的催化剂

IF 7.9 3区 材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
Wei-Ting Lin , Yu-Shuo Lee , Wen-Yueh Yu , I-Chung Cheng
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引用次数: 0

摘要

电化学加氢和氢解(ECH)为将生物质衍生的糠醛(FF)转化为糠醇(FOL)和2-甲基呋喃(MF)等有价值的产品提供了一种可持续的方法。然而,由于低法拉第效率(FE)、有限的生产速率和相互竞争的析氢反应,挑战仍然存在。在本研究中,通过对CuAl2进行脱合金处理,合成了纳米多孔铜(NPC)作为高效的催化剂载体。结构表征证实了其高表面积和明显的FCC晶面。与商品铜粉相比,NPC的电化学表面积增加了16倍,从而提高了催化性能。在−1.00 V下,FOL的FE从43.2%提高到83.0%,HER从12.7%降低到0.6%,产品收率提高了4-6倍。此外,还研究了在NPC上负载10% Co、Ni和Pd的双金属催化剂。值得注意的是,10Ni/NPC形成了具有FCC结构的Cu - Ni固溶体,并显著提高了19.1%的MF选择性,这可能是由于Ni/Cu(111)表面有利于加氢脱氧途径。这些发现强调了NPC在提高FF的ECH方面的有效性,以及它作为双金属催化剂设计的可调平台的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impregnated nanoporous copper as catalysts for the electrocatalytic hydrogenation of furfural
Electrochemical hydrogenation and hydrogenolysis (ECH) offer a sustainable approach for converting biomass-derived furfural (FF) into valuable products such as furfuryl alcohol (FOL) and 2-methylfuran (MF). However, challenges remain due to low Faradaic efficiency (FE), limited production rates, and competing hydrogen evolution reactions. In this study, nanoporous copper (NPC) was synthesized via dealloying of CuAl2 to serve as an efficient catalyst support. Structural characterization confirmed its high surface area and distinct FCC crystalline facets. Compared to commercial Cu powder, NPC exhibited a 16-fold increase in electrochemical surface area, resulting in enhanced catalytic performance. At −1.00 V, the FE for FOL increased from 43.2 % to 83.0 %, HER was suppressed from 12.7 % to 0.6 %, and product yields improved by 4–6 times. Furthermore, bimetallic catalysts with 10 wt% Co, Ni, and Pd supported on NPC were investigated. Notably, 10Ni/NPC formed a Cu–Ni solid solution with FCC structure and significantly improved MF selectivity by 19.1 %, likely due to a Ni/Cu(111) surface favoring the hydrodeoxygenation pathway. These findings highlight the effectiveness of NPC in enhancing the ECH of FF and its potential as a tunable platform for bimetallic catalyst design.
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来源期刊
CiteScore
5.80
自引率
6.40%
发文量
174
审稿时长
32 days
期刊介绍: Materials Today Sustainability is a multi-disciplinary journal covering all aspects of sustainability through materials science. With a rapidly increasing population with growing demands, materials science has emerged as a critical discipline toward protecting of the environment and ensuring the long term survival of future generations.
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