| Non-Oxidative Aromatization of CH4-C_3H_8 over La-Promoted Zn/HZSM-5 Catalysts |
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| 作者姓名： | Lihe Zheng Dong Xuan Jianjun Guo Hui Lou Xiaoming Zheng Institute of Catalysis Chemistry |
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| 作者单位： | Lihe Zheng，Dong Xuan，Jianjun Guo，Hui Lou，Xiaoming Zheng Institute of Catalysis，Chemistry Department，Zhejiang University，Hangzhou 310028，China |
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| 基金项目： | This work is supported by the National Science Foundation of China (Grant Nos 20343002
20433030) and PetroChina. |
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| 摘 要： | The non-oxidative aromatization of mixed CH4 with C3H8 over La-promoted Zn/HZSM-5 catalysts was studied in a fixed-bed reactor at 823 K with space velocity 600 h-1 and CH4/C3H8 (mol ratio)=5:1. The propane conversion and the aromatic selectivities were up to 99% and 60% over the catalyst respectively, while methane conversion had an induction period with the highest conversion of 30%. The structure and surface acidity of the catalysts were characterized by XRD, NH3-TPD and TG-DTA. The influences of reaction and regenerative conditions on the activity and selectivity were also investigated.
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Non-Oxidative Aromatization of CH4-C3H8 over La-Promoted Zn/HZSM-5 Catalysts |
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| Lihe Zheng,Dong Xuan,Jianjun Guo,Hui Lou,Xiaoming Zheng Institute of Catalysis,Chemistry.Non-Oxidative Aromatization of CH4-C_3H_8 over La-Promoted Zn/HZSM-5 Catalysts[J].Journal of Natural Gas Chemistry,2006,15(1). |
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| Authors: | Lihe Zheng Dong Xuan Jianjun Guo Hui Lou Xiaoming Zheng |
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| Abstract: | The non-oxidative aromatization of mixed CH4 with C3H8 over La-promoted Zn/HZSM-5 catalysts was studied in a fixed-bed reactor at 823 K with space velocity 600 h-1 and CH4/C3H8 (mol ratio)=5:1. The propane conversion and the aromatic selectivities were up to 99% and 60% over the catalyst respectively, while methane conversion had an induction period with the highest conversion of 30%. The structure and surface acidity of the catalysts were characterized by XRD, NH3-TPD and TG-DTA. The influences of reaction and regenerative conditions on the activity and selectivity were also investigated. |
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| Keywords: | aromatization methane propane regeneration La Zn HZSM-5 |
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