Catalytic activity of Pd/Al2O3 toward the combustion of methane |
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| Affiliation: | 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China;1. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bldg 11, 1113 Sofia, Bulgaria;2. Institute of Catalysis, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bldg 11, 1113 Sofia, Bulgaria;3. Technical University of Sofia, Sofia 1000, Bulgaria;1. Department of Chemical Engineering, Chungbuk National University, Chungbuk 361-763, Republic of Korea;2. R&D Center, Heesung Catalysts Corp., #507-1Da, Jungwang-Dong, Shiheung-City, Kyungki-Do 429-450, Republic of Korea;1. University of Michigan, Department of Chemical Engineering, 2300 Hayward, Ann Arbor, MI 48109, USA;2. Ford Motor Company, Research and Innovation Center, 2101 Village Road, Dearborn, MI 48121, USA;1. Institute of Chemical Engineering, Technische Universitaet Dresden, Münchner Platz 3, 01062 Dresden, Germany;2. Institute of Construction Materials, Dresden University of Technology, WürzburgerStraße 46, 01187 Dresden, Germany |
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| Abstract: | This work focuses on the improving of the activities and stabilities of Pd/Al2O3 catalysts for lean methane catalytic combustion. The influence of preparation conditions on performance of Pd/Al2O3 catalyst has been studied. Results showed that excellent performance of the catalyst was attributed to high hydrothermal stability at the support calcination temperature of 1100 °C. In addition, the catalytic activity was enhanced due to high dispersion of active species at lower catalyst calcination temperature. The catalysts were studied by XPS analysis. Results showed that the active phase of Pd/Al2O3 was Pd or Pd/PdO mixture. And the state transformation of Pd species resulted in the deactivation of Pd/Al2O3. |
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