| Photocatalytic Synthesis of Hydrocarbon Oxygenates from C2H6 and CO2 over Pd-MoO3/SiO2 Catalyst |
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| 作者姓名： | Xitao Wang Zhong He Shunhe Zhong Xiufen Xiao |
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| 作者单位： | Xitao Wang，Zhong He，Shunhe Zhong，Xiufen Xiao College of Chemical Engineering and Technology，Tianjin University，Tianjin 300072，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | Pd-MoO3/SiO2 catalyst has been prepared using the method of incipient wetness impregnation. The photo absorbing behaviors and chemisorbing properties of the catalyst have been characterized by UV-vis spectra and TPD-MS experiments. The results indicated that metal Pd loaded on MoOe/SiO2 has a significant effect on the photo absorbing performance of MoO3/SiO2, and an obvious blue shift of the absorption edge is produced. Under UV irradiation, the chemisorption state of CO2 undergoes decomposing process to form CO at 481 K, and a two-site adsorption state of ethane can be formed at around 496 K. Photo-oxidation of ethane using carbon dioxide can mainly produce propanal, ethanol and acetaldehyde in the temperature range of 353-423 K. The presence of metal Pd improves the catalytic activity remarkably.
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| 关 键 词： | 催化合成技术 乙烷 二氧化碳 碳氢化合物 催化剂 |
| 收稿时间： | 11 December 2006 |
| 修稿时间： | 2006-12-112007-03-06 |
Photocatalytic Synthesis of Hydrocarbon Oxygenates from C2H6 and CO2 over Pd-MoO3/SiO2 Catalyst |
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| Xitao Wang Zhong He Shunhe Zhong Xiufen Xiao.Photocatalytic Synthesis of Hydrocarbon Oxygenates from C2H6 and CO2 over Pd-MoO3/SiO2 Catalyst[J].Journal of Natural Gas Chemistry,2007,16(2):173-178. |
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| Authors: | Xitao Wang Zhong He Shunhe Zhong Xiufen Xiao |
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| Institution: | aCollege of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | Pd-MoO3/SiO2 catalyst has been prepared using the method of incipient wetness impregnation. The photo absorbing behaviors and chemisorbing properties of the catalyst have been characterized by UV-vis spectra and TPD-MS experiments. The results indicated that metal Pd loaded on MoO3/SiO2 has a significant effect on the photo absorbing performance of MoO3/SiO2, and an obvious blue shift of the absorption edge is produced. Under UV irradiation, the chemisorption state of CO2 undergoes decomposing process to form CO at 481 K, and a two-site adsorption state of ethane can be formed at around 496 K. Photo-oxidation of ethane using carbon dioxide can mainly produce propanal, ethanol and acetaldehyde in the temperature range of 353-423 K. The presence of metal Pd improves the catalytic activity remarkably. |
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| Keywords: | photo-catalysis carbon dioxide ethane hydrocarbon oxygenates Pd-MoO3/SiO2 catalyst |
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