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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la105087f
|2 doi
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|a pubmed24n0691.xml
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|a eng
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| 100 |
1 |
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|a Sun, Zhenyu
|e verfasserin
|4 aut
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| 245 |
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|a Thermal-stable carbon nanotube-supported metal nanocatalysts by mesoporous silica coating
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|c 2011
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 30.08.2011
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|a Date Revised 10.05.2011
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a A universal strategy was developed for the preparation of high-temperature-stable carbon nanotube (CNT) -supported metal nanocatalysts by encapsulation with a mesoporous silica coating. Specifically, we first showed the design of one novel catalyst, Pt()CNT/SiO(2), with a controllable mesoporous silica coating in the range 11-39 nm containing pores ≈3 nm in diameter. The hollow porous silica shell offers a physical barrier to separate Pt nanoparticles from contact with each other, and at the same time the access of reactant species to Pt was not much affected. As a result, the catalyst showed high thermal stability against metal particle agglomeration or sintering even after being subjected to harsh treatments up to 500 °C. In addition, degradation in catalytic activity was minimized for the hydrogenation of nitrobenzene over the catalyst treated at 300 °C for 2 h. The scheme was also extended to coat porous silica onto the surfaces of CuRu(@)CNT and the resultant catalyst thereby can be reusable at least four times without loss of activity for the hydrogenolysis of glycerol. These results suggest that the as-prepared nanostructured CNT-supported catalysts may find promising applications, especially in those processes requiring rigorous conditions
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|a Journal Article
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1 |
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|a Zhang, Hongye
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Yanfei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Huang, Changliang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tao, Ranting
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Zhimin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Zhenduo
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 27(2011), 10 vom: 17. Mai, Seite 6244-51
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:27
|g year:2011
|g number:10
|g day:17
|g month:05
|g pages:6244-51
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|u http://dx.doi.org/10.1021/la105087f
|3 Volltext
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