CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Structural changes of Rh-Mn nanoparticles inside carbon nanotubes studied by X-ray absorption spectroscopy
Bao, HL; Sun, XP; Jiang, Z; Huang, YY; Wang, JQ; huangyuying@sinap.ac.cn; wangjianqiang@sinap.ac.cn
2014
Source PublicationCHINESE JOURNAL OF CATALYSIS
ISSN0253-9837
Volume35Issue:8Pages:1418—1427
AbstractSupported Rh-based catalysts such as Rh-Mn nanoparticles (NPs) have potential use in the synthesis of ethanol from syngas. The structure of Rh-Mn NPs in multi-walled carbon nanotubes under different atmospheres and temperatures was studied by X-ray absorption spectroscopy (XAS). TEM images showed that the NPs dispersed in the carbon nanotubes had a uniform size of 2 nm. XAS data revealed that the Rh-Mn NPs before reduction were composed of Rh2O3 clusters and mixed Mn oxide species. After reduction in a 10% H-2-90% He atmosphere, the mixed Mn oxides were converted into nearly pure MnO. In contrast, the Rh2O3 clusters were easily decomposed to metallic Rh clusters even under a He atmosphere at 250 degrees C. The Rh clusters remained in the metal state under the next reduction atmosphere, but their dispersion in the Rh-Mn NPs increased with increasing temperature. No significant Mn-Rh or Mn-O-Rh interaction in the reduced NPs was observed in the extended X-ray absorption fine structure analysis. The results showed that there was no interaction between the MnO particles and Rh clusters and the role of the Mn promoter was mainly to improve Rh dispersion. (C) 2014, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
KeywordSupported Rhodium Catalysts Monoxide Hydrogen Mixtures Co Hydrogenation C-2-oxygenates Synthesis Rh-mn-li/sio2 Catalyst Ethanol-production Manganese Oxides Syngas Promoter Conversion
Indexed BySCI
Language英语
WOS IDWOS:000340347100021
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14415
Collection中科院上海应用物理研究所2011-2019年
Corresponding Authorhuangyuying@sinap.ac.cn; wangjianqiang@sinap.ac.cn
Recommended Citation
GB/T 7714
Bao, HL,Sun, XP,Jiang, Z,et al. Structural changes of Rh-Mn nanoparticles inside carbon nanotubes studied by X-ray absorption spectroscopy[J]. CHINESE JOURNAL OF CATALYSIS,2014,35(8):1418—1427.
APA Bao, HL.,Sun, XP.,Jiang, Z.,Huang, YY.,Wang, JQ.,...&wangjianqiang@sinap.ac.cn.(2014).Structural changes of Rh-Mn nanoparticles inside carbon nanotubes studied by X-ray absorption spectroscopy.CHINESE JOURNAL OF CATALYSIS,35(8),1418—1427.
MLA Bao, HL,et al."Structural changes of Rh-Mn nanoparticles inside carbon nanotubes studied by X-ray absorption spectroscopy".CHINESE JOURNAL OF CATALYSIS 35.8(2014):1418—1427.
Files in This Item: Download All
File Name/Size DocType Version Access License
Structural changes o(1177KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Bao, HL]'s Articles
[Sun, XP]'s Articles
[Jiang, Z]'s Articles
Baidu academic
Similar articles in Baidu academic
[Bao, HL]'s Articles
[Sun, XP]'s Articles
[Jiang, Z]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Bao, HL]'s Articles
[Sun, XP]'s Articles
[Jiang, Z]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Structural changes of Rh-Mn nanoparticles inside carbon nanotubes studied by X-ray absorption spectroscopy.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.