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Identifying active sites of CoNC/CNT from pyrolysis of molecularly defined complexes for oxidative esterification and hydrogenation reactions
Cheng, Tianyuan; Yu, Hao; Peng, Feng; Wang, Hongjuan; Zhang, Bingsen; Su, Dangsheng; yuhao@scut.edu.cn; bszhang@imr.ac.cn
2016
Source PublicationCATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
Volume6Issue:4Pages:1007-1015
AbstractAs an emerging catalyst based on earth-abundant metals, Co3O4 supported on carbon materials, derived from the pyrolysis of metal salts and nitrogen-containing ligands, shows excellent performance in hydrogenation, hydrogenated coupling, oxidative esterification and oxidation of amines. Herein, we unravel the real active sites of this catalyst through a combination of XRD, XPS, HRTEM, EELS and poisoning experiments with sulfur-containing compounds. The oxidative esterification of benzyl alcohol, hydrogenation of nitrobenzene and hydrogenated coupling of nitrobenzene with benzaldehyde were used as probe reactions. By comparing the catalytic performance before and after HCl washing, it was demonstrated that particulate Co3O4 has a marginal effect on the catalysis, and the highly dispersed CoNx on carbon nanotubes created during the pyrolysis is responsible for the activity. It was proposed that cobalt chelate complexes bonded to 2 to 3 nitrogens in the graphene lattice, probably like the pyridinic vacancy, might be responsible for the activity.
description.department[cheng, tianyuan ; yu, hao ; peng, feng ; wang, hongjuan] s china univ technol, sch chem & chem engn, guangzhou 510640, guangdong, peoples r china ; [zhang, bingsen ; su, dangsheng] chinese acad sci, inst met res, catalysis & mat div, shenyang natl lab mat sci, shenyang 110016, peoples r china
Funding OrganizationNational Natural Science Foundation of China [21133010, 21273079]; Guangdong Provincial Natural Science Foundation [S20120011275, 2014A030312007]; Program for New Century Excellent Talents in University [NCET-12-0190]; Fundamental Research Funds for the Central Universities of China [2014ZG0005, 2015PT012]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74899
Collection中国科学院金属研究所
Corresponding Authoryuhao@scut.edu.cn; bszhang@imr.ac.cn
Recommended Citation
GB/T 7714
Cheng, Tianyuan,Yu, Hao,Peng, Feng,et al. Identifying active sites of CoNC/CNT from pyrolysis of molecularly defined complexes for oxidative esterification and hydrogenation reactions[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(4):1007-1015.
APA Cheng, Tianyuan.,Yu, Hao.,Peng, Feng.,Wang, Hongjuan.,Zhang, Bingsen.,...&bszhang@imr.ac.cn.(2016).Identifying active sites of CoNC/CNT from pyrolysis of molecularly defined complexes for oxidative esterification and hydrogenation reactions.CATALYSIS SCIENCE & TECHNOLOGY,6(4),1007-1015.
MLA Cheng, Tianyuan,et al."Identifying active sites of CoNC/CNT from pyrolysis of molecularly defined complexes for oxidative esterification and hydrogenation reactions".CATALYSIS SCIENCE & TECHNOLOGY 6.4(2016):1007-1015.
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