Strong metal‒support interaction modulates catalytic activity of Ru nanoparticles on Gd2O3 for efficient ammonia decomposition
Exploration of efficient Ru-based catalysts is significant for advancing the production of hydrogen from ammonia decomposition, which depends predominantly on the rational regulation of the metal-support interaction of Ru-based catalysts. Herein, highly dispersed Ru nanoparticles (NPs) on Gd<sub>2</sub>O<sub>3</sub> (Ru/Gd<sub>2</sub>O<sub>3</sub>) are developed and applied for the NH<sub>3</sub> decomposition reaction. By varying the reduction temperature, the activity of the Ru/Gd<sub>2</sub>O<sub>3</sub> catalyst can be remarkably improved. Characterization results reveal that the enhanced activity is associated with the strong metal‒support interaction (SMSI) induced formation of Gd<sub>2</sub>O<sub>3</sub> overlayer on the Ru NPs. With a relatively low reduction temperature, the exposed Ru NPs possess relatively low activity toward NH<sub>3</sub> decomposition. After high temperature activation treatment, the Gd<sub>2</sub>O<sub>3</sub> overlayer coated Ru NPs show much enhanced intrinsic activity than that of the exposed Ru NPs. This study brings a facile strategy to modulate the catalytic performance of oxide supported Ru catalysts by regulating the SMSI of catalysts.
Authors
- Xiaohua Ju
- Teng Feng He (ORCID: https://orcid.org/0000-0003-2900-7612)
- Ping Chen (ORCID: https://orcid.org/0000-0002-0625-0639)
- Lin Liu (ORCID: https://orcid.org/0000-0001-5733-6910)
- Xiaoyan Xu (ORCID: https://orcid.org/0000-0002-5427-2744)
- Jiemin Wang (ORCID: https://orcid.org/0000-0002-6221-6363)
Institutions
- Dalian Institute of Chemical Physics (CN)
- Chinese Academy of Sciences (CN)
- Dalian University of Technology (CN)
- Dalian National Laboratory for Clean Energy (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- iScience
- Published
- 2024-09-12
- DOI
- https://doi.org/10.1016/j.isci.2024.110931
- Citations
- 7
- Primary Topic
- Ammonia Synthesis and Nitrogen Reduction
- Type
- article
- Field-Weighted Citation Impact
- 0.75
Funders
- National Natural Science Foundation of China
- Yulin University
- National Key Research and Development Program of China
- Dalian National Laboratory for Clean Energy