利用活性氮化合物实现氮循环经济。

IF 7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Chemical record Pub Date : 2024-08-02 DOI:10.1002/tcr.202400094
Dr. Tatsuo Kimura
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引用次数: 0

摘要

氮氧化物(NOx)应根据逐年增加的环境法规进行净化。迄今为止,已开发出多种脱硝技术,如通过注入氨(NH3)等还原剂将氮氧化物选择性催化还原(SCR)为氮气(N2)和将氮氧化物储存还原(NSR)为氮气。要实现能源的可持续性,包括氮氧化物的完全净化,也许必须采用先进的催化方法。作为同时解决环境和资源问题的解决方案之一,这篇概念文章重点关注活性氮(Nr)化合物(主要是氮氧化物)的利用,以鼓励考虑氮循环经济。为了通过 NH3 循环利用氮氧化物,我们提出了一种具有挑战性但合理的催化技术,即在不改变反应温度的情况下,在含氧化性氮氧化物的气体和含还原性 H2 的气体之间交替切换入口气体。考虑到 NOx 的反应活性高于 N2,这种 NOx 到 NH3(NTA)工艺在合成 NH3 方面前景广阔,在不久的将来不仅可用作肥料,还可用作燃料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Utilization of Reactive Nitrogen Compounds for Nitrogen Circular Economy

Nitrogen oxides (NOx) should be purified according to environmental regulations, being restricted increasingly year by year. A wide variety of denitration technologies, such as selective catalytic reduction (SCR) of NOx to nitrogen (N2) and NOx storage reduction (NSR) to N2 by injecting reducing agents like ammonia (NH3), has so far been developed practically. Sophisticated catalytic approaches are perhaps mandatory for the sustainability in energy including complete purification of NOx. As one of the solutions to overcome problems for environment and resource simultaneously, this concept article focuses on the utilization of reactive nitrogen (Nr) compounds, mainly NOx, for encouraging an opening to consider nitrogen circular economy. For the recycling of NOx via NH3, a challenging but rational catalytic technology can be proposed by an alternate switching the inlet gas between NOx containing oxidative gas and H2 containing reductive one without an operation to change the reaction temperature. Considering the reactivity of NOx higher than that of N2, this kind of NOx to NH3 (NTA) process is promising for synthesizing NH3, being valuable not only as fertilizer but also as fuel in near future.

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来源期刊
Chemical record
Chemical record 化学-化学综合
CiteScore
11.00
自引率
3.00%
发文量
188
审稿时长
>12 weeks
期刊介绍: The Chemical Record (TCR) is a "highlights" journal publishing timely and critical overviews of new developments at the cutting edge of chemistry of interest to a wide audience of chemists (2013 journal impact factor: 5.577). The scope of published reviews includes all areas related to physical chemistry, analytical chemistry, inorganic chemistry, organic chemistry, polymer chemistry, materials chemistry, bioorganic chemistry, biochemistry, biotechnology and medicinal chemistry as well as interdisciplinary fields. TCR provides carefully selected highlight papers by leading researchers that introduce the author''s own experimental and theoretical results in a framework designed to establish perspectives with earlier and contemporary work and provide a critical review of the present state of the subject. The articles are intended to present concise evaluations of current trends in chemistry research to help chemists gain useful insights into fields outside their specialization and provide experts with summaries of recent key developments.
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