N-Doped Sub-3 nm Co Nanoparticles as Highly Efficient and Durable Aerobic Oxidative Coupling Catalysts
文献类型:期刊论文
作者 | Han, Junxing1; Gu, Feifei2; Li, Yuchao1,3 |
刊名 | CHEMISTRY-AN ASIAN JOURNAL |
出版日期 | 2016-09-01 |
卷号 | 11期号:18页码:2594-2601 |
ISSN号 | 1861-4728 |
关键词 | aldehydes cobalt methanol nitrogen oxidative coupling |
英文摘要 | 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. |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Chemistry, Multidisciplinary |
研究领域[WOS] | Chemistry |
关键词[WOS] | HIGH-PERFORMANCE ELECTROCATALYSTS ; OXYGEN REDUCTION REACTION ; COBALT OXIDE CATALYSTS ; SELECTIVE OXIDATION ; ALCOHOLS ; ESTERIFICATION ; ALDEHYDES ; GOLD ; HYDROGEN ; ESTERS |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000387462100013 |
源URL | [http://ir.ipe.ac.cn/handle/122111/21651] |
专题 | 过程工程研究所_研究所(批量导入) |
作者单位 | 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 |
推荐引用方式 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. |
入库方式: OAI收割
来源:过程工程研究所
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