Single-walled carbon nanotubes prepared in small AlPO4-5 and CoAPO-5 molecular sieves by low-temperature hydrocracking
文献类型：期刊论文
| 作者 | Yang, Wenshen1; Sun, Weina1,2; Zhao, Shuheng1,2; Yin, Xiuli1
|
| 刊名 | microporous and mesoporous materials
 |
| 出版日期 | 2016 |
| 卷号 | 219页码:87-92 |
| 关键词 | Single-walled carbon nanotubes Hydrocracking CoAPO-5 crystals Radial breathing mode Co/Al ratio |
| 英文摘要 | single-walled carbon nanotubes (swnts) were prepared in the channels of small alpo4-5 and cobalt-incorporated alpo4-5 (coapo-5) crystals (4-6 mu m in diameter and 10-30 mu m in length), by hydrocracking at 350 degrees c. the effects of co content in the precursor gel and carbon density of the structure-directing agent on the resulting swnts were investigated. the results of high-resolution transmission electron microscopy and polarized raman scattering indicated that swnts formed in the channels of alpo4-5 and coapo-5 crystals, after hydrocracking for 10 h at 350 degrees c. the swnts were 0.4 nm in diameter, and possessed well-defined symmetry. when the co/al ratio of the precursor gel was 0.075, the relative intensity ratio of raman d to g band (id/ig) was 0.286, and the weight loss (500-700 c) of the swnts formed in coapo-5 was 3.27 wt%. this co/al ratio yielded the lowest obtained i-d/i-g value and the highest weight loss of swnts, which indicated the lowest amorphous carbon density and the highest swnt quantity. the density and quantity of swnts in the alpo4-5 crystals increased when the structure-directing agent was changed from triethylamine to tripropylamine, because of the higher carbon content of the latter's unit cell. low-temperature hydrocracking can be used to prepare swnts in the channels of alpo4-5 and coapo-5 crystals, even for small low-quality crystals. (c) 2015 elsevier inc. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; science & technology - other topics ; materials science |
| 关键词[WOS] | channels ; crystals ; growth ; decomposition ; mechanism ; template |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000363353800012 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/10880]  |
| 专题 | 中国科学院广州能源研究所 |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Wenshen,Sun, Weina,Zhao, Shuheng,et al. Single-walled carbon nanotubes prepared in small AlPO4-5 and CoAPO-5 molecular sieves by low-temperature hydrocracking[J]. microporous and mesoporous materials,2016,219:87-92. |
| APA | Yang, Wenshen,Sun, Weina,Zhao, Shuheng,&Yin, Xiuli.(2016).Single-walled carbon nanotubes prepared in small AlPO4-5 and CoAPO-5 molecular sieves by low-temperature hydrocracking.microporous and mesoporous materials,219,87-92. |
| MLA | Yang, Wenshen,et al."Single-walled carbon nanotubes prepared in small AlPO4-5 and CoAPO-5 molecular sieves by low-temperature hydrocracking".microporous and mesoporous materials 219(2016):87-92. |
入库方式： OAI收割
来源：广州能源研究所
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