CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Direct methylation of N-methylaniline with CO2/H-2 catalyzed by gold nanoparticles supported on alumina
Tang, G; Bao, HL; Jin, C; Zhong, XH; Du, XL; Zhong, XH (reprint author), E China Univ Sci & Technol, Inst Appl Chem, Key Lab Adv Mat, Shanghai 200237, Peoples R China.
2015
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume5Issue:121Pages:99678—99687
Subtype期刊文献
AbstractSmall gold nanoparticles (similar to 3 nm) loaded onto various supports have been prepared by a deposition-precipitation method and studied for direct methylation of N-methylaniline with CO2/H-2. Among the catalysts examined, an acid-base bifunctional support gamma-alumina supported gold catalyst (Au/g-Al2O3) exhibits the best catalytic performance. Au/gamma-Al2O3 catalysts with controlled mean Au particle sizes (1.8-8.3 nm) have also been successfully prepared by regulating the concentration of HAuCl4 in solution, aging time, aging temperature and mole ratio of urea to gold in the process of deposition-precipitation with urea. The turnover frequency (TOF) values for direct methylation of N-methylaniline with CO2/H-2 increase on decreasing the mean size of Au nanoparticles (from 8.3 to 1.8 nm), showing that methylation of N-methylaniline with CO2/H-2 is a structure-sensitive reaction. A fast increase in TOF occurs when the mean Au particle size becomes smaller than 3 nm. Through TEM (transmission electron microscope), gold L-3-edge XAFS (X-ray absorption fine structure) and CO2- and NH3-TPD (temperature programmed desorption) analysis, we can conclude the Au particle sizes, oxidation state of the gold species and acid-base properties of the supports are responsible for the high catalytic activity of direct methylation of N-methylaniline with CO2/H-2.
KeywordMild Reaction Conditions Carbon-dioxide Molecular-hydrogen Nitro-compounds Co Oxidation Formic-acid Secondary-amines Aromatic-amines Au Catalysts Size
Indexed BySCI
Language英语
WOS IDWOS:000365406800013
Citation statistics
Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24904
Collection中科院上海应用物理研究所2011-2019年
Corresponding AuthorZhong, XH (reprint author), E China Univ Sci & Technol, Inst Appl Chem, Key Lab Adv Mat, Shanghai 200237, Peoples R China.
Recommended Citation
GB/T 7714
Tang, G,Bao, HL,Jin, C,et al. Direct methylation of N-methylaniline with CO2/H-2 catalyzed by gold nanoparticles supported on alumina[J]. RSC ADVANCES,2015,5(121):99678—99687.
APA Tang, G,Bao, HL,Jin, C,Zhong, XH,Du, XL,&Zhong, XH .(2015).Direct methylation of N-methylaniline with CO2/H-2 catalyzed by gold nanoparticles supported on alumina.RSC ADVANCES,5(121),99678—99687.
MLA Tang, G,et al."Direct methylation of N-methylaniline with CO2/H-2 catalyzed by gold nanoparticles supported on alumina".RSC ADVANCES 5.121(2015):99678—99687.
Files in This Item: Download All
File Name/Size DocType Version Access License
Direct methylation o(790KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Tang, G]'s Articles
[Bao, HL]'s Articles
[Jin, C]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tang, G]'s Articles
[Bao, HL]'s Articles
[Jin, C]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tang, G]'s Articles
[Bao, HL]'s Articles
[Jin, C]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Direct methylation of N-methylaniline with CO2_H-2 catalyzed by gold nanoparticles supported on alumina.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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