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N-Doped Sub-3 nm Co Nanoparticles as Highly Efficient and Durable Aerobic Oxidative Coupling Catalysts | |
Han, Junxing1; Gu, Feifei2; Li, Yuchao1,3 | |
2016-09-01 | |
Source Publication | CHEMISTRY-AN ASIAN JOURNAL
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ISSN | 1861-4728 |
Volume | 11Issue:18Pages:2594-2601 |
Abstract | A nano-coating associated with sulfuric acid leaching protocol was developed to prepare N-doped sub-3 nm Co-based nanoparticle catalyst (Co-N/C) using melamine-formaldehyde resin as the N-containing precursor, active carbon as the support, and Co(NO3)(2) as the Co-containing precursor. By thermal treatment under nitrogen atmosphere at 800 degrees C and leached with sulfuric acid solution, a stable and highly dispersive Co-N coordination structure was uniformly dispersed on the formed Co-N/C catalyst with a Co loading of 0.47 wt% and Co nanoparticle size of 2.55 nm. The Co-N/C catalyst was characterized with XRD, XPS, Raman, SEM, TEM, ICP, and elemental analysis. The Co-N/C catalyst showed extremely high catalytic efficiency with a TON of 257 for the aerobic oxidative coupling of aldehydes with methanol to directly synthesize methyl esters with molecular oxygen as the final oxidant. The Co-N/C catalyst also showed broad substrate range and stable recyclability. After recycling for 7 times, no obvious deactivation was detected. It was confirmed that the sub-3 nm Co-N coordination structure formed between metallic Co nanoparticles and pyridinic nitrogen doping into graphitic layers functions as the active site to activate molecular oxygen for the b-H elimination from generated hemiacetal intermediates to produce methyl esters. The nano-coating associated with acid leaching protocol provides a novel strategy to prepare highly efficient non-precious metal-based catalysts. |
Keyword | Aldehydes Cobalt Methanol Nitrogen Oxidative Coupling |
Subtype | Article |
WOS Headings | Science & Technology ; Physical Sciences |
DOI | 10.1002/asia.201600921 |
Indexed By | SCI |
Language | 英语 |
WOS Keyword | HIGH-PERFORMANCE ELECTROCATALYSTS ; OXYGEN REDUCTION REACTION ; COBALT OXIDE CATALYSTS ; SELECTIVE OXIDATION ; ALCOHOLS ; ESTERIFICATION ; ALDEHYDES ; GOLD ; HYDROGEN ; ESTERS |
WOS Research Area | Chemistry |
WOS Subject | Chemistry, Multidisciplinary |
Funding Organization | Beijing Municipal Natural Science Foundation(2153042) ; National Natural Science Foundation of China(21306203) |
WOS ID | WOS:000387462100013 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.ipe.ac.cn/handle/122111/21651 |
Collection | 研究所(批量导入) |
Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 2.Beijing City Univ, Beijing 101399, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Han, Junxing,Gu, Feifei,Li, Yuchao. N-Doped Sub-3 nm Co Nanoparticles as Highly Efficient and Durable Aerobic Oxidative Coupling Catalysts[J]. CHEMISTRY-AN ASIAN JOURNAL,2016,11(18):2594-2601. |
APA | Han, Junxing,Gu, Feifei,&Li, Yuchao.(2016).N-Doped Sub-3 nm Co Nanoparticles as Highly Efficient and Durable Aerobic Oxidative Coupling Catalysts.CHEMISTRY-AN ASIAN JOURNAL,11(18),2594-2601. |
MLA | Han, Junxing,et al."N-Doped Sub-3 nm Co Nanoparticles as Highly Efficient and Durable Aerobic Oxidative Coupling Catalysts".CHEMISTRY-AN ASIAN JOURNAL 11.18(2016):2594-2601. |
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N-Doped Sub-3 nm Co (886KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text |
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