| Preparation and Characterization of Carbon Nanotubes-Coated Cordierite for Catalyst Supports |
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| 作者姓名： | Jianmei Wang Rong Wang Xiujin Yu Jianxin Lin Feng Xie Kemei Wei |
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| 作者单位： | Jianmei Wang，Rong Wang，Xiujin Yu，Jianxin Lin，Feng Xie，Kemei Wei National Engineering Research Center of Chemical Fertilizer Catalyst，Fuzhou University，Fuzhou 350002，China |
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| 基金项目： | Aeknowledgements This study was supported by the National Natural Science Foundation of China （20576021） and Science ＆ Technology Priority Project of Fujian Province （2005H201-2）. |
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| 摘 要： | The carbon nanotubes-coated cordierite (CNTs-cordierite) was fabricated by pyrolysis of ethine on cordierite with iron catalyst, which was penetrated into the cordierite substrate by vacuum impregnation. The cordierite substrate, carbon naontubes, and CNTs-cordierite were characterized by SEM. TEM/HREM. BET, and TGA. The results show that the carbon nanotubes were distributed uniformly on the surface of cordierite. A significant increase in BET surface area and pore volume was observed, and a suitable pore-size distribution was obtained. On the CNTs-cordierite, carbon nanotubes penetrated into the cordierite substrate, which led to a remarkable stability of the CNTs against ultrasound maltreatment. Growth time is an important factor for thermostability and texture of the sample. The mass increased but the purity decreased with the growth time, which caused the exothermic peak shift to low temperature, and the corresponding full width half maximum (FWHM) of the peak in DTG increased.
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| 关 键 词： | 碳纳米棒 堇青石 高温分解 乙炔 催化剂载体 |
| 收稿时间： | 03 31 2006 12:00AM |
| 修稿时间： | 04 30 2006 12:00AM |
Preparation and Characterization of Carbon Nanotubes-Coated Cordierite for Catalyst Supports |
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| Jianmei Wang Rong Wang Xiujin Yu Jianxin Lin Feng Xie Kemei Wei.Preparation and Characterization of Carbon Nanotubes-Coated Cordierite for Catalyst Supports[J].Journal of Natural Gas Chemistry,2006,15(3):211-216. |
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| Authors: | Jianmei Wang Rong Wang Xiujin Yu Jianxin Lin Feng Xie Kemei Wei |
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| Institution: | National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China |
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| Abstract: | The carbon nanotubes-coated cordierite (CNTs-cordierite) was fabricated by pyrolysis of ethine on cordierite with iron catalyst, which was penetrated into the cordierite substrate by vacuum impregnation. The cordierite substrate, carbon naontubes, and CNTs-cordierite were characterized by SEM. TEM/HREM. BET, and TGA. The results show that the carbon nanotubes were distributed uniformly on the surface of cordierite. A significant increase in BET surface area and pore volume was observed, and a suitable pore-size distribution was obtained. On the CNTs-cordierite, carbon nanotubes penetrated into the cordierite substrate, which led to a remarkable stability of the CNTs against ultrasound maltreatment. Growth time is an important factor for thermostability and texture of the sample. The mass increased but the purity decreased with the growth time, which caused the exothermic peak shift to low temperature, and the corresponding full width half maximum (FWHM) of the peak in DTG increased. |
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| Keywords: | carbon nanotube cordierite pyrolvsis: ethine catalyst support |
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