Short channeled Zr-Ce-SBA-15 supported palladium catalysts for toluene catalytic oxidation |
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| Affiliation: | 1. Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China;2. Institute of Fine Chemicals and Engineering, Henan University, Kaifeng 475001, PR China;1. Young Researchers and Elite Club, Neyshabur Branch, Islamic Azad University, P.O. Box 97175-613, Neyshabur, Iran;2. New Materials Technology and Processing Research Center, Department of Chemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran;1. Department of Orthopaedic Surgery, Columbia University Medical Center, New York, NY;1. Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences, 620990 Ekaterinburg, Russian Federation;2. M. N. Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, 620108 Ekaterinburg, Russian Federation;3. NANOTECH Centre, Ural Federal University, 620002 Ekaterinburg, Russian Federation;1. The Petroleum and Petrochemical College and Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand;2. Powder Metallurgy Research and Development Unit (PM_RDU), National Metal and Materials Technology Center, Pathum Thani 12120, Thailand;1. State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China |
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| Abstract: | Short channeled Zr-Ce-SBA-15 (ZCS) mesoporous materials were synthesized through hydrothermal routes without addition of mineral acids. 0.5 wt.% palladium was loaded on ZCS and SBA-15 via an ethanol reduction approach. Pd/ZCS possesses unique hexagonal platelet morphologies with short channels running parallel to the thickness in the range of 400–500 nm, while Pd/SBA-15 has a fibrous macrostructure with channels at the micrometer scale. Palladium species present in supports as well dispersed PdO nanocrystals with diameter of ca. 5–6 nm. Comparing with Pd/SBA-15, Pd/ZCS shows enhanced catalytic activity for toluene oxidation, which is ascribed to short channeled supports facilitating the molecular diffusion. |
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