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Three-dimensional ordered macroporous Ru-substituted BaZrO3 perovskites: active catalysts for ammonia synthesis under mild conditions

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Abstract

Three-dimensional ordered macroporous (3DOM) BaZr(1−x)RuxO3 perovskites were prepared by a PMMA-templating strategy and applied for ammonia synthesis for the first time. The 3DOM BaZr(1−x)RuxO3 catalysts have a periodic macroporous structure and Ru species are dispersed in the well-arranged pores. The 3DOM BaZr0.95Ru0.05O3 catalyst shows effective ammonia synthesis under mild conditions. As proved by XAFS analysis, the active sites are surface Ru0 clusters. It was demonstrated that 3DOM BaZrO3 is superior to S–G BaZrO3 that was prepared by a sol–gel method in ammonia synthesis at low temperature. This phenomenon is attributed to the small crystalline size and the well-arranged macroporous structure of the former.

Graphical abstract: Three-dimensional ordered macroporous Ru-substituted BaZrO3 perovskites: active catalysts for ammonia synthesis under mild conditions

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Publication details

The article was received on 18 Jul 2019, accepted on 02 Oct 2019 and first published on 03 Oct 2019


Article type: Communication
DOI: 10.1039/C9CY01424A
Catal. Sci. Technol., 2019, Advance Article

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    Three-dimensional ordered macroporous Ru-substituted BaZrO3 perovskites: active catalysts for ammonia synthesis under mild conditions

    L. Li, L. Yang, T. Zhang, X. Wang, X. Zhang, B. Lin, J. Ni, H. Dai, C. Au and L. Jiang, Catal. Sci. Technol., 2019, Advance Article , DOI: 10.1039/C9CY01424A

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