Preparation of PdCu Alloy Nanocatalysts for Nitrate Hydrogenation and Carbon Monoxide Oxidation
Alloying Pd with Cu is important for catalytic reactions such as denitrification reaction and CO oxidation reaction, but understanding of the catalyst preparation and its correlation with the catalyst’s activity and selectivity remains elusive. Herein, we report the results of investigations of the preparation of PdCu alloy nanocatalysts using different methods and the catalytic properties of the catalysts in catalytic denitrification reaction and CO oxidation reaction. PdCu alloy nanocatalysts were prepared by conventional dry impregnation method and ligand-capping based wet chemical synthesis method, and subsequent thermochemical activation as well. The alloying characteristics depend on the bimetallic composition. PdCu/Al2O3 with a Pd/Cu ratio of 50:50 was shown to exhibit an optimized hydrogenation activity for the catalytic denitrification reaction. The catalytic activity of the PdCu catalysts was shown to be highly dependent on the support, as evidenced by the observation of an enhanced catalytic activity for CO oxidation reaction using TiO2 and CeO2 supports with high oxygen storage capacity. Lastly, we discussed the implications of the results to the refinement of the preparation of the alloy nanocatalysts.
- Xiamen Univ., Xiamen(China). College of Chemistry and Chemical Engineering
- State Univ. of New York at Binghamton, Binghamton, NY (United States). Dept. of Chemistry
- Japan Advanced Inst. of Science and Technology, Ishikawa (Japan)
- Publication Date:
- OSTI Identifier:
- Grant/Contract Number:
- SC0006877; 21373171
- Accepted Manuscript
- Journal Name:
- Additional Journal Information:
- Journal Volume: 6; Journal Issue: 7; Journal ID: ISSN 2073-4344
- Research Org:
- Central Michigan Univ.
- Sponsoring Org:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Country of Publication:
- United States
- 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY palladium-copper alloy; nanocatalyst; nitrate hydrogenation; CO oxidation; bimetallic composition; support effect
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