| Methane Decomposition over Ni/α-Al_2O_3 Promoted by La_2O_3 and CeO_2 |
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| 作者姓名： | Pengbo Jiang Yongchen Shang Tiexin Cheng Yingli Bi Keying Shi Shuquan Wei Guolin Xu Kaiji Zhen
College of Chemistry Jilin University Changchun China |
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| 作者单位： | Pengbo Jiang，Yongchen Shang，Tiexin Cheng，Yingli Bi，Keying Shi，Shuquan Wei，Guolin Xu2，Kaiji Zhen
College of Chemistry，Jilin University，Changchun 130023，China; Department of Chemistry，Harbin Normal University，Harbin 150080，China |
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| 摘 要： | The decomposition of methane on Ni/a-Al2O3 modified by La2O3 and CeO2 with different contents has been investigated and the ralationship between methane decomposition and removal of carbon by CO2 over these catalyst has also been studied by pulse-chromatography. The catalysts were characterized by TPR and XRD. It was shown that Ni/a-Al2O3 could be promoted by adding La2O3, and the carbon species produced over this catalyst was activated and eliminated by CO2. But CeO2 would suppress the decomposition of methane over Ni crystallite. Both La2O3 and CeO2 can inhibit aggregation of the Ni particles. Decomposition of methane over the Ni-based catalysts is structure sensitive to a certain extent.
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Methane Decomposition over Ni/α-Al2O3 Promoted by La2O3 and CeO2 |
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| Pengbo Jiang,Yongchen Shang,Tiexin Cheng,Yingli Bi,Keying Shi,Shuquan Wei,Guolin Xu,Kaiji Zhen
College of Chemistry,Jilin University,Changchun ,China,.Methane Decomposition over Ni/α-Al2O3 Promoted by La2O3 and CeO2[J].Journal of Natural Gas Chemistry,2003,12(3). |
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| Authors: | Pengbo Jiang Yongchen Shang Tiexin Cheng Yingli Bi Keying Shi Shuquan Wei Guolin Xu Kaiji Zhen |
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| Abstract: | The decomposition of methane on Ni/a-Al2O3 modified by La2O3 and CeO2 with different contents has been investigated and the ralationship between methane decomposition and removal of carbon by CO2 over these catalyst has also been studied by pulse-chromatography. The catalysts were characterized by TPR and XRD. It was shown that Ni/a-Al2O3 could be promoted by adding La2O3, and the carbon species produced over this catalyst was activated and eliminated by CO2. But CeO2 would suppress the decomposition of methane over Ni crystallite. Both La2O3 and CeO2 can inhibit aggregation of the Ni particles. Decomposition of methane over the Ni-based catalysts is structure sensitive to a certain extent. |
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| Keywords: | methane carbon dioxide nickel lanthana ceria |
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