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| Methane Decomposition over Ni/α-Al2O3 Promoted by La2O3 and CeO2 | |
| 引用本文： | PengboJiang YongchenShang TiexinCheng YingliBi KeyingShi ShuquanWei GuolinXu KaijiZhen. Methane Decomposition over Ni/α-Al2O3 Promoted by La2O3 and CeO2[J]. 天然气化学杂志, 2003, 12(3): 183-188 |
| 作者姓名： | PengboJiang YongchenShang TiexinCheng YingliBi KeyingShi ShuquanWei GuolinXu KaijiZhen |
| 作者单位： | [1]CollegeofChemistry,JilinUniversity,Changchun130023,China [2]DepartmentofChemistry,HarbinNormalUniversity,Harbin150080,China |
| 摘 要： | The decomposition of methane on Ni/a-Al2O3 modified by La2O3 and CeO2 with differ-ent 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. |
| 关 键 词： | 天然气 分解 Ni／α-A12O3 La2O3 CeO2 二氧化碳 镍 氧化镧 二氧化铈 催化剂 |
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. Methane Decomposition over Ni/α-Al2O3 Promoted by La2O3 and CeO2[J]. Journal of Natural Gas Chemistry, 2003, 12(3): 183-188 | |
| Authors: | Pengbo Jiang Yongchen Shang Tiexin Cheng Yingli Bi Keying Shi Shuquan Wei Guolin Xu Kaiji Zhen |
| Affiliation: | College of Chemistry, Jilin University, Changchun 130023, China; |
| 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 ofcarbon by CO2 over these catalyst has also been studied by pulse-chromatography. The catalysts werecharacterized by TPR and XRD. It was shown that Ni/a-Al2O3 could be promoted by adding La2O3, andthe carbon species produced over this catalyst was activated and eliminated by CO2. But CeO2 wouldsuppress the decomposition of methane over Ni crystallite. Both La2O3 and CeO2 can inhibit aggregationof the Ni particles. Decomposition of methane over the Ni-based catalysts is structure sensitive to a certainextent. |
| Keywords: | methane carbon dioxide nickel lanthana ceria |
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