Catalytically efficient Ni-NiO x -Y 2 O 3 interface for medium temperature water-gas shift reaction.

Autor: Xu K; Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China., Ma C; College of Materials Science and Engineering, Hunan University, Changsha, 410082, China., Yan H; Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China., Gu H; Department of Chemical Engineering, University College London, Roberts Building, Torrington Place, London, WC1E 7JE, UK., Wang WW; Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China., Li SQ; Key Laboratory of Micro-Nano Powder and Advanced Energy Materials of Anhui Higher Education Institutes, Chizhou University, Chizhou, 247000, China., Meng QL; Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China., Shao WP; Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China., Ding GH; Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China., Wang FR; Department of Chemical Engineering, University College London, Roberts Building, Torrington Place, London, WC1E 7JE, UK. ryan.wang@ucl.ac.uk., Jia CJ; Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China. jiacj@sdu.edu.cn.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2022 May 04; Vol. 13 (1), pp. 2443. Date of Electronic Publication: 2022 May 04.
DOI: 10.1038/s41467-022-30138-5
Abstrakt: The metal-support interfaces between metals and oxide supports have long been studied in catalytic applications, thanks to their significance in structural stability and efficient catalytic activity. The metal-rare earth oxide interface is particularly interesting because these early transition cations have high electrophilicity, and therefore good binding strength with Lewis basic molecules, such as H 2 O. Based on this feature, here we design a highly efficient composite Ni-Y 2 O 3 catalyst, which forms abundant active Ni-NiO x -Y 2 O 3 interfaces under the water-gas shift (WGS) reaction condition, achieving 140.6 μmol CO g cat -1 s -1 rate at 300 °C, which is the highest activity for Ni-based catalysts. A combination of theory and ex/in situ experimental study suggests that Y 2 O 3 helps H 2 O dissociation at the Ni-NiO x -Y 2 O 3 interfaces, promoting this rate limiting step in the WGS reaction. Construction of such new interfacial structure for molecules activation holds great promise in many catalytic systems.
(© 2022. The Author(s).)
Databáze: MEDLINE
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