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通过海藻生物碳作为生物来源的催化剂分解NOx:实验和密度函数理论方法

Ronan Pelé¹, María González Martínez¹, Ange Nzihou²

¹Université de Toulouse, IMT Mines Albi, RAPSODEE CNRS UMR, 5302, Campus Jarlard, F., Albi Cedex 09, 81013, France.

Journal of environmental management

|February 18, 2026

概括

来自海藻的生物碳通过催化分解有效地去除氧化 (NOx). 较高的热解温度提高了催化剂的性能,尽管氧基可以导致失活.

科学领域:

催化剂是一种催化剂.
材料科学材料科学材料科学
环境化学环境化学

背景情况:

氧化 (NOx) 是主要的空气污染物,需要有效的减排策略.
生物基催化剂为减少NOx提供了一个可持续的替代方案.
了解催化剂失活对于改善催化剂寿命和再生至关重要.

研究的目的:

为了研究海洋藻类衍生生物碳的NOx减排性能.
阐明NOx分解和催化剂失活的机制.
探索热解温度和操作条件对催化剂效率的影响.

主要方法:

在不同的热解温度 (650°C和800°C) 下,从海洋藻中制备生物碳.
使用固定床反应堆对NOx分解的实验评估.
使用密度函数理论 (DFT) 来研究NO吸附机制的理论研究.

主要成果:

在800°C (SW800) 烧解的生物碳在350°C显示出较高的NOx转化率 (22.5%),而不是SW650 (15.6%).
较高的矿物质含量,而不是表面积,与SW800的性能改善有关.
DFT的计算证实了酸和酸位在NO吸附中的重要作用,而氧基则抑制了它.

结论:

来自海藻的生物碳是减少NOx的有希望的催化剂.
催化剂的失活归因于含氧组和焦炭沉积.
优化生物碳特性,特别是含量和矿物成分,是提高NOx去除的关键.

关键词:

生物碳是一种生物碳.生物来源的催化剂在 DFT 模拟中使用 DFT.减少氧化的减少海藻是一种海藻.

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