通过电解利用尿素生产车载氢气,促进氮氧化物排放的低温催化还原

IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Current Opinion in Electrochemistry Pub Date : 2024-09-12 DOI:10.1016/j.coelec.2024.101591
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引用次数: 0

摘要

氮氧化物排放给环境带来了巨大挑战,尤其是在重工业化、交通繁忙的地区。尽管采用了各种后处理技术来降低内燃机汽车的排放水平,但全球氮氧化物水平仍在持续上升。在低排气温度(< 200 C)下提高氮氧化物转化效率的新方法包括在选择性催化还原模块之前集成氢气和氨气喷射。尿素电解为同时制氢和制氨提供了一条很有前景的途径。阴离子交换膜电解槽是一种可行的车载制氢低成本解决方案,具有体积小、与现有车辆系统兼容等优点。克服催化剂和组件选择、电解质可行性和系统集成等挑战,对于充分发挥基于电解的乘用车氮氧化物减排战略的潜力仍然至关重要。
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On-board hydrogen production from urea via electrolysis to promote low-temperature catalytic reduction of NOx emissions
Nitrogen oxides emissions pose a significant environmental challenge, particularly in heavily industrialized, high-traffic regions. Global NOx levels continue to rise, despite various aftertreatment techniques being deployed to mitigate emission levels of combustion engine vehicles. Novel approaches to enhance NOx conversion efficiency at low exhaust temperatures (< 200 C) include integrating hydrogen and ammonia injection before selective catalytic reduction modules. Urea electrolysis presents a promising avenue for simultaneous hydrogen and ammonia production. An anion exchange membrane electrolyser emerges as a viable and low-cost solution for on-board hydrogen production, offering compact size and compatibility with existing vehicle systems. Overcoming challenges such as catalyst and component selection, electrolyte viability, and system integration remains critical for realising the full potential of electrolysis-based NOx mitigation strategies in passenger vehicles.
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来源期刊
Current Opinion in Electrochemistry
Current Opinion in Electrochemistry Chemistry-Analytical Chemistry
CiteScore
14.00
自引率
5.90%
发文量
272
审稿时长
73 days
期刊介绍: The development of the Current Opinion journals stemmed from the acknowledgment of the growing challenge for specialists to stay abreast of the expanding volume of information within their field. In Current Opinion in Electrochemistry, they help the reader by providing in a systematic manner: 1.The views of experts on current advances in electrochemistry in a clear and readable form. 2.Evaluations of the most interesting papers, annotated by experts, from the great wealth of original publications. In the realm of electrochemistry, the subject is divided into 12 themed sections, with each section undergoing an annual review cycle: • Bioelectrochemistry • Electrocatalysis • Electrochemical Materials and Engineering • Energy Storage: Batteries and Supercapacitors • Energy Transformation • Environmental Electrochemistry • Fundamental & Theoretical Electrochemistry • Innovative Methods in Electrochemistry • Organic & Molecular Electrochemistry • Physical & Nano-Electrochemistry • Sensors & Bio-sensors •
期刊最新文献
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