气候变化领域集成服务门户(CCPortal): Ni, Co hydroxide triggers electrocatalytic production of high-purity benzoic acid over 400 mA cm-2

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DOI	10.1039/d0ee02607g
	Ni, Co hydroxide triggers electrocatalytic production of high-purity benzoic acid over 400 mA cm-2
	Huang H.; Yu C.; Han X.; Huang H.; Wei Q.; Guo W.; Wang Z.; Qiu J.
发表日期	2020
ISSN	17545692
起始页码	4990
结束页码	4999
卷号	13 期号:12
英文摘要	With the increasingly prominent energy issues and environment problems, the electrocatalytic production of value-added fine chemicals by hybrid water electrolysis has shown much hope for replacing conventional energy-intensive chemical technology. However, the low current density caused by the competition of the oxygen evolution reaction at the anode has hindered the large-scale production of fine chemicals and H2. Besides, the separation of products from the complicated electrolyte also remains a significant barrier. Herein, we present the integration of hybrid water electrolysis and conventional crystallization separation for the first time, achieving the electrocatalytic production and separation of benzoic acid without impurities. An amorphous nanosheet composed of Ni, Co hydroxide supported on Ni foam (A-Ni-Co-H/NF), with a large active area and low charge transfer resistance, is prepared for the first time and applied to catalyze the electrocatalytic benzyl alcohol oxidation reaction. A-Ni-Co-H/NF enables us to achieve an industrial-scale current density over 400 mA cm-2 without the occurrence of the OER, and delivers ultrafast reaction kinetics. The yield of Ph-COOH is close to 100%, only spending 15 min at room temperature and atmosphere pressure. In situ Raman spectroscopy reveals that the as-made A-Ni-Co-H/NF catalyst features reversible structure evolution and recovery during the EBA reaction. The converted nickel oxyhydroxide containing Co species (Co-NiOOH) is confirmed as the real active species. This presents a novel electrocatalyst to achieve industrial-scale prodution for value-added chemicals and the novel integrated technology also provides guidance for the separation and collection of products during the electrocatalytic process. This journal is © The Royal Society of Chemistry.
英文关键词	Benzoic acid; Charge transfer; Cobalt compounds; Cobalt metallography; Electrocatalysts; Electrolysis; Electrolytes; Indicators (chemical); Industrial chemicals; Nickel metallography; Oxygen evolution reaction; Reaction kinetics; Separation; Benzyl alcohol oxidation; Charge transfer resistance; Chemical technologies; Electrocatalytic process; In-situ Raman spectroscopy; Integrated technologies; Large scale productions; Value-added chemicals; Nickel compounds; catalyst; cobalt; electrochemical method; electrochemistry; hydroxide; manufacturing; nickel; organic acid; purification
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189454
作者单位	State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian, 116024, China; College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
推荐引用方式 GB/T 7714	Huang H.,Yu C.,Han X.,et al. Ni, Co hydroxide triggers electrocatalytic production of high-purity benzoic acid over 400 mA cm-2[J],2020,13(12).
APA	Huang H..,Yu C..,Han X..,Huang H..,Wei Q..,...&Qiu J..(2020).Ni, Co hydroxide triggers electrocatalytic production of high-purity benzoic acid over 400 mA cm-2.Energy & Environmental Science,13(12).
MLA	Huang H.,et al."Ni, Co hydroxide triggers electrocatalytic production of high-purity benzoic acid over 400 mA cm-2".Energy & Environmental Science 13.12(2020).