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Updated: Jan 10, 2026

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Ammonia Synthesis at Low Pressure
Published on: August 23, 2017
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太阳能驱动的大气CO2与氨直接合以合成尿素
Zhiyong Zhang1,2, Qing Huang1,2, Yangen Xie1,2
1Key Laboratory of Photochemistry, Institute of Chemistry Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Beijing, PR China.
Nature communications
|November 25, 2025
概括
这项研究介绍了一种新的太阳能系统,可以将大气中的二氧化碳 (CO2) 和氨直接转化为尿素. 这种实用方法绕过了能源密集型净化,在现实条件下提供高效的碳利用.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 目前的二氧化碳 (CO2) 利用需要能源密集的捕获和净化.
- 大气中二氧化碳的转化具有挑战性,因为度低,环境氧气的干扰.
研究的目的:
- 开发一个实用的系统,直接利用大气中的二氧化碳制成有价值的产品.
- 为了证明太阳能驱动的环境二氧化碳和氨的转化为尿素.
主要方法:
- 制造一种混合结构催化剂,该催化剂结合了 - 氨酸金属有机框架和UiO-66-NH2.2.
- 利用太阳能作为减少二氧化碳和氧化氨的唯一动力来源.
- 设计一个可扩展的平台,用于集成的二氧化碳捕获,转化和产品收集.
主要成果:
- 从大气中的CO2直接获得了272.1μmol·g−1·h−1的CO2生产率.
- 通过将二氧化碳减少和氨氧化相结合,证明了具有高选择性的直接空气到尿素的转化.
- 一个扩大规模的原型在自然阳光下实现了32.4μmol·g−1·h−1的尿素生产率.
结论:
- 开发的系统为大气碳利用提供了一个实用且可扩展的途径.
- 这项技术将二氧化碳捕获,太阳能驱动转化和产品收集集成到一个平台上.
- 这些发现提供了一种可行的方法,可以使用可再生能源直接从空气中生产尿素.
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