Citation: Yaping Zhou, Yongcheng Ma, Guojun Lan, Haodong Tang, Wenfeng Han, Huazhang Liu, Ying Li. A highly stable and active mesoporous ruthenium catalyst for ammonia synthesis prepared by a RuCl₃/SiO₂-templated approach[J]. Chinese Journal of Catalysis, ;2019, 40(1): 114-123. doi: 10.1016/S1872-2067(18)63192-4 shu

A highly stable and active mesoporous ruthenium catalyst for ammonia synthesis prepared by a RuCl₃/SiO₂-templated approach

a Institute of Industry Catalysis, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China;
b Sichuan Huadi Construction Engineering Co., Ltd., Chengdu 610081, Sichuan, China

Received Date: 12 September 2018
Revised Date: 19 October 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (20803064), and the Natural Science Foundation of Zhejiang Provence (LY17B030010).

Molecular nitrogen is relatively inert and the activation of its triple bond is full of challenges and of significance. Hence, searching for an efficiently heterogeneous catalyst with high stability and dispersion is one of the important targets of chemical technology. Here, we report a Ba-K/Ru-MC catalyst with Ru particle size of 1.5-2.5 nm semi-embedded in a mesoporous C matrix and with dual promoters of Ba and K that exhibits a higher activity than the supported Ba-Ru-K/MC catalyst, although both have similar metal particle sizes for ammonia synthesis. Further, the Ba-K/Ru-MC catalyst is more active than commercial fused Fe catalysts and supported Ru catalysts. Characterization techniques such as high-resolution transmission electron microscopy, N₂ physisorption, CO chemisorption, and temperature-programmed reduction suggest that the Ru nanoparticles have strong interactions with the C matrix in Ba-K/Ru-MC, which may facilitate electron transport better than supported nanoparticles.
- Mesoporous carbon,
- Semi-embedded,
- Ru/Carbon catalyst,
- High dispersion,
- Ammonia synthesis
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A highly stable and active mesoporous ruthenium catalyst for ammonia synthesis prepared by a RuCl3/SiO2-templated approach

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通讯作者: 陈斌, bchen63@163.com

A highly stable and active mesoporous ruthenium catalyst for ammonia synthesis prepared by a RuCl₃/SiO₂-templated approach