Partial oxidation of ethanol on supported Pt catalysts |
| |
| Affiliation: | 1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, Yunnan, China;2. Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China;3. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;1. Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang 330031, Jiangxi, China;2. Jiangxi Baoan New Material Technology Corporation, LTD, Pingxiang 337000, Jiangxi, China;3. Key Laboratory of Process Analysis and Control of Sichuan Universities, Yibin University, Yibin 644000, Sichuan, China;4. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;1. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Applied Catalysis Science and Engineering, School of Chemical Engineering, Tianjin University, Tianjin 300072, China;2. School of Chemical Engineering, Inner Mongolia University of Technology, Huhehaot 010062, China;1. Key Laboratory of Coal Science and Technology for Ministry of Education and Shanxi Province, Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan 030024, PR China;2. Xi’An University of Science and Technology, Xi’An 710054, PR China;1. Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, Kozani GR-50100, Greece;2. Department of Environmental Engineering, University of Patras, Agrinio, Greece;3. Center for Catalysis and Separation, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, UAE;4. Department of Mechanical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, UAE;5. Chemical and Environmental Engineering Department, Instituto de Nanociencia de Aragón (INA) and Instituto de Ciencia de Materiales de Aragón (ICMA), Universidad de Zaragoza-CSIC, 50018 Zaragoza, Spain;6. Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBERBBN, 28029 Madrid, Spain;7. Instituto de Nanociencia y Materiales de Aragón (INMA), Universidad de Zaragoza-CSIC, c/ María de Luna 3, 50018 Zaragoza, Spain;8. The Surface Analysis Laboratory, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 4DL, UK;9. Laboratory of Physical Chemistry & Chemical Processes, School of Chemical & Environmental Engineering, Technical University of Crete, GR-73100 Chania, Greece;10. Institute of Petroleum Research - Foundation for Research and Technology-Hellas (IPR-FORTH), Greece |
| |
| Abstract: | This work studied the effect of the nature of the support on the performance of Pt/Al2O3, Pt/ZrO2, Pt/CeO2 and Pt/Ce0.50Zr0.50O2 catalysts on partial oxidation of ethanol. The reducibility and oxygen transfer capacity were evaluated by temperature-programmed reduction (TPR) and oxygen storage capacity (OSC) experiments. The results showed that the support plays an important role on the products distribution of the partial oxidation of ethanol. Acetic acid was the main product on Pt/Al2O3 catalyst whereas methane and acetaldehyde were the only products detected on Pt/ZrO2, Pt/CeO2 and Pt/Ce0.50Zr0.50O2 catalysts.The products distribution obtained on Pt/ZrO2, Pt/CeO2 and Pt/Ce0.50Zr0.50O2 catalysts was related to their redox properties. The OSC experiments showed that the oxygen exchange capacity was higher on Pt/CeO2 and Pt/Ce0.50Zr0.50O2 catalysts. A high oxygen storage capacity favored the formation of acetate species, which could be decomposed to CH4 and/or oxidized to CO2 via carbonate species. On the other hand, the lower oxygen exchange capacity of Pt/ZrO2 catalyst led to a higher ethoxy species formation. These species can be dehydrogenated and desorb as acetaldehyde. Then, the higher selectivity to acetaldehyde observed on Pt/ZrO2 catalyst could be assigned to its low oxygen storage/release capacity.In the case of Pt/Al2O3 catalyst, the production of acetic acid could be related to its acidic properties, since this material did not show redox properties, as revealed by OSC analysis. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
