铯促进的负载在钛酸锶上的钌纳米颗粒催化氮还原为氨的可见光和近红外光辅助作用
Visible and NIR Light Assistance of the N Reduction to NH Catalyzed by Cs-promoted Ru Nanoparticles Supported on Strontium Titanate.
作者信息
Peng Yong, Albero Josep, Franconetti Antonio, Concepción Patricia, García Hermenegildo
机构信息
Instituto Universitario de Tecnología Química CSIC-UPV, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Universitat Politecnica de Valencia, Avda. de los Naranjos s/n, 46022 Valencia, Spain.
Departamento Química Orgánica, Facultad de Química, Universidad de Sevilla, Profesor García Gonzalez 1, 41012 Sevilla, Spain.
出版信息
ACS Catal. 2022 May 6;12(9):4938-4946. doi: 10.1021/acscatal.2c00509. Epub 2022 Apr 12.
NH production accounts for more than 1% of the total CO emissions and is considered one of the most energy-intensive industrial processes currently ( > 400 °C and > 80 bars). The development of atmospheric-pressure N fixation to NH under mild conditions is attracting much attention, especially using additional renewable energy sources. Herein, efficient photothermal NH evolution in continuous flow upon visible and NIR light irradiation at near 1 Sun power using Cs-decorated strontium titanate-supported Ru nanoparticles is reported. Notably, for the optimal photocatalytic composition, a constant NH rate near 3500 μmol g h was achieved for 120 h reactions, being among the highest values reported at atmospheric pressure under 1 Sun irradiation.
氨的生产占二氧化碳排放总量的1%以上，被认为是目前能源密集度最高的工业过程之一（温度>400°C，压力>80巴）。在温和条件下将大气中的氮固定为氨的研究进展备受关注，特别是利用额外的可再生能源。在此，报道了使用铯修饰的钛酸锶负载钌纳米颗粒，在近1个太阳光功率的可见光和近红外光照射下，连续流动中高效的光热氨析出。值得注意的是，对于最佳光催化组合物，在120小时的反应中实现了接近3500 μmol g-1 h-1的恒定氨生成速率，这是在1个太阳光照射下大气压下报道的最高值之一。
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