Selective electrocatalytic nitrobenzene-to-aniline reduction on nickel-cobalt layered double hydroxide via dual-site hydrogen atom transfer.
ニッケル-コバルト層状複水酸化物における二部位水素原子移動を介した選択的電気化学的ニトロベンゼンからアニリンへの還元 (AI 翻訳)
Jianxiang Shi, Shuquan Huang, Chenyang Xu, Hui Xu, Yongming Luo
🤖 gxceed AI 要約
日本語
本研究では、ニッケル-コバルト層状複水酸化物（NiCo-LDH）を用いた高効率・高選択的な電気化学的ニトロベンゼン還元触媒を開発。中性条件下で99%以上の転化率、98.3%の選択性、87.3%のファラデー効率を達成し、水をグリーン水素源として利用。二部位触媒モデルと水素原子移動過程が優れた性能の鍵であることを解明した。
English
This study develops a highly efficient and selective electrocatalyst (NiCo-LDH) for nitrobenzene reduction to aniline under neutral conditions, achieving >99% conversion, 98.3% selectivity, and 87.3% Faradaic efficiency using water as a green hydrogen source. A dual-site catalytic model and hydrogen atom transfer process are key to the superior performance.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
In the global GX context
This paper contributes to green chemistry by enabling sustainable production of aniline, a key industrial intermediate, via electrocatalysis using water as hydrogen source, reducing reliance on fossil-based processes and harsh conditions. It aligns with global efforts to decarbonize chemical manufacturing.
👥 読者別の含意
🔬研究者:Demonstrates a novel dual-site catalyst design for efficient electrochemical hydrogenation, relevant to sustainable chemical synthesis.
🏢実務担当者:Potentially useful for chemical companies aiming to adopt green electrosynthesis for aniline production, reducing carbon footprint.
📄 Abstract（原文）
The selective reduction of nitrobenzene to aniline provides key intermediates for the industrial production of diverse chemical feedstocks and materials. Conventional synthesis routes typically operate under harsh conditions, such as elevated temperatures and pressures, posing significant challenges to sustainability and energy efficiency. The direct electrocatalytic reduction of nitrobenzene to aniline utilizing water as a green hydrogen source offers a promising solution. However, its industrial implementation is often hindered by low selectivity of catalytic electrodes. Herein, we report a highly efficient and selective electrocatalytic system for nitrobenzene-to-aniline reduction using nickel‑cobalt layered double hydroxide (NiCo-LDH) electrocatalyst. By precisely adjusting the ratio of nickel and cobalt metal cations and embedding acetate ions (Ac-) into the LDH layers, a series of nickel foam-supported dual-site nickel‑cobalt layered double hydroxide electrodes (NiCo(x)-LDH-Y/NF) were prepared. The optimized NiCo(2)-LDH-20 electrode could achieve exceptional nitrobenzene conversion (>99 %) to aniline with 98.3 % selectivity and 87.3 % Faradaic efficiency under neutral conditions. Mechanistic investigations with electrochemical adsorption (ECA) studies and density functional theory (DFT) calculation revealed that the superior performance originates from a dual-site catalytic model of NiCo(x)-LDH-Y dominated by hydrogen atom transfer (HAT) process. The innovative integration of the basal plane sites in adsorbing substrate and edge sites in facilitating reactive hydrogen (Hads) production remarkably improves the reaction pathway and overall performance of the catalyst.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1016/j.jcis.2026.139837first seen 2026-05-15 20:20:31
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