Bimetallic Pt-Co Nanoparticle Deposited on Alumina for Simultaneous CO and Toluene Oxidation in the Presence of Moisture
| Autor: | Shen Taiming, Peng Peng, Jun Li, Qinglin Xie, Qi Zhang, Shengpeng Mo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Bioengineering 02 engineering and technology engineering.material 010402 general chemistry bimetallic alloy lcsh:Chemical technology 01 natural sciences Catalysis lcsh:Chemistry chemistry.chemical_compound Adsorption moisture Chemical Engineering (miscellaneous) toluene lcsh:TP1-1185 Bimetallic strip Process Chemistry and Technology 021001 nanoscience & nanotechnology Toluene Toluene oxidation 0104 chemical sciences Catalytic oxidation Chemical engineering chemistry lcsh:QD1-999 Pt-based catalysts engineering Noble metal 0210 nano-technology Carbon monoxide catalytic oxidation |
| Zdroj: | Processes, Vol 9, Iss 230, p 230 (2021) Processes Volume 9 Issue 2 |
| ISSN: | 2227-9717 |
| Popis: | Carbon monoxide (CO) and hydrocarbons (HCs) generally have competitive adsorption on the active site of noble-metal nano-catalysts, thus developing an effective way to reduce the passivation of competitive reaction with each other is an urgent problem. In this study, we successfully synthesized transition metal-noble metal (Pt-M) alloys via introducing inexpensive metal elements (M = Ni, Co and Cu) into Pt particles and then deposited on alumina support to form Pt-based catalysts. Subsequently, we choose CO and toluene as polluting gases to evaluate the catalytic activities of Pt-M/Al2O3 catalysts. Introducing inexpensive metal elements (M = Ni, Co, and Cu) significantly changed the physicochemical properties and catalytic activities of these Pt-based catalysts. It can be found that the Pt-Co/Al2O3 catalyst exhibited outstanding catalytic activity for CO and toluene oxidation under mixed gas atmosphere, compared with other Pt-based catalysts, which is due to the higher dispersity, more surface adsorption oxygen, and well redox ability. Surprisingly, H2O could promote the catalytic activities for CO/toluene co-oxidation over the Pt-Co/Al2O3 catalyst. Thus, the present synthetic strategy not only opens an avenue towards the synthesis of noble metal-based catalysts, but also provides an excellent tolerance to H2O in the catalytic process. |
| Databáze: | OpenAIRE |
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