Influence of the nanoscale support on carbon deposition and carbon elimination over Ni/gamma-Al2O3 catalyst for CH4 conversion
文献类型：期刊论文
| 作者 | Yang, YL; Xu, HY; Li, WZ |
| 刊名 | journal of nanoscience and nanotechnology
 |
| 出版日期 | 2004-09-01 |
| 卷号 | 4期号:7页码:891-895 |
| 关键词 | Ni/gamma-Al2O3 catalyst nanoscale support carbon deposition carbon elimination metal-support interaction |
| 英文摘要 | characteristics of carbon deposition by ch4 and carbon elimination by co2 over conventional and nanoscale ni/gamma-al2o3 catalysts were investigated by using a pulse reaction, as well as by tga, tem, tpo-ms, h-2-tpr and h-2-chemisorption techniques. it was found that the behaviors of carbon deposition by ch4 decomposition and carbon elimination by co2 depend on the active metal dispersion and the metal-support interaction. the filamentous carbon was formed on the conventional ni/gamma-al2o3 catalyst with low metal dispersion and relatively large particles, this type of filamentous carbon was far from the active centers and difficult to eliminate by co2. on the other hand, the carbon deposition originated from ch4 decomposition on the nanoscale ni/gamma-al2o3 catalyst would mainly cover the surface of active centers, this type of highly active carbon was easily eliminated by co2 because it is close to the active center ni atoms. as a result, the improvement of coking-resistance was ascribed to the high metal dispersion and strong metal-support interaction, a model of ch4 decomposition carbon deposition on ni/gamma-al2o3 catalyst was proposed. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, multidisciplinary ; nanoscience & nanotechnology ; materials science, multidisciplinary ; physics, applied ; physics, condensed matter |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science ; physics |
| 关键词[WOS] | synthesis gas ; sol-gel ; ni/al2o3 catalyst ; partial oxidation ; methane ; dioxide ; syngas ; metals ; co2 ; ni |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000224611300034 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/139377]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, YL,Xu, HY,Li, WZ. Influence of the nanoscale support on carbon deposition and carbon elimination over Ni/gamma-Al2O3 catalyst for CH4 conversion[J]. journal of nanoscience and nanotechnology,2004,4(7):891-895. |
| APA | Yang, YL,Xu, HY,&Li, WZ.(2004).Influence of the nanoscale support on carbon deposition and carbon elimination over Ni/gamma-Al2O3 catalyst for CH4 conversion.journal of nanoscience and nanotechnology,4(7),891-895. |
| MLA | Yang, YL,et al."Influence of the nanoscale support on carbon deposition and carbon elimination over Ni/gamma-Al2O3 catalyst for CH4 conversion".journal of nanoscience and nanotechnology 4.7(2004):891-895. |
入库方式： OAI收割
来源：大连化学物理研究所
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