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Selectivity Regulation in Au-Catalyzed Nitroaromatic Hydrogenation by Anchoring Single-Site Metal Oxide Promoters
Zhao, JX; Chen, CQ; Xing, CH; Jiao, ZF; Yu, MT; Mei, BB; Yang, J; Zhang, BY; Jiang, Z; Qin, Y
2020
Source PublicationACS CATALYSIS
ISSN2155-5435
Volume10Issue:4Pages:2837-2844
Subtype期刊论文
AbstractPrecise control of selectivity in hydrogenation reactions is a long-standing challenge. Surface decoration of nanocatalysts with transition-metal oxide nanoparticles (NPs) is an effective strategy to tailor the catalytic selectivity but generally at the expense of activity due to the blocking of active sites. Here, we report that constructing single-site metal oxide modifiers (NiO, CoOx, or FeOx), on supported Au NPs by atomic layer deposition (ALD) can regulate their catalytic selectivity for nitroaromatic hydrogenation. The coverage of single-site metal oxide can be precisely tuned by altering the number of ALD cycles. The Au/TiO2 decorated with five cycles of NiO (Ni: 0.32 wt %) in the style of a single site can efficiently change the product selectivity from azo to azoxy compounds without significantly blocking the surface active sites. The density functional theory calculations indicate that the azoxybenzene bonded to the single-site NiO-decorated Au(111) with a larger adsorption energy, which inhibits the overhydrogenation of azoxybenzene and results in high azoxybenzene selectivity. Our work has demonstrated a general and efficient way to regulate the reaction selectivity of metal nanocatalysts by anchoring single-site metal oxide promoters.
KeywordATOMIC LAYER DEPOSITION NITRO-COMPOUNDS CHEMOSELECTIVE HYDROGENATION ORGANIC FRAMEWORKS REDUCTION NANOPARTICLES CO OXIDATION NANOSTRUCTURES NITROARENES
DOI10.1021/acscatal.9b04855
Indexed BySCI ; EI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/33126
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
3.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201203, Peoples R China
4.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
5.Henan Univ Sci & Technol, Coll Phys & Engn, Luoyang 471023, Peoples R China
6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhao, JX,Chen, CQ,Xing, CH,et al. Selectivity Regulation in Au-Catalyzed Nitroaromatic Hydrogenation by Anchoring Single-Site Metal Oxide Promoters[J]. ACS CATALYSIS,2020,10(4):2837-2844.
APA Zhao, JX.,Chen, CQ.,Xing, CH.,Jiao, ZF.,Yu, MT.,...&Qin, Y.(2020).Selectivity Regulation in Au-Catalyzed Nitroaromatic Hydrogenation by Anchoring Single-Site Metal Oxide Promoters.ACS CATALYSIS,10(4),2837-2844.
MLA Zhao, JX,et al."Selectivity Regulation in Au-Catalyzed Nitroaromatic Hydrogenation by Anchoring Single-Site Metal Oxide Promoters".ACS CATALYSIS 10.4(2020):2837-2844.
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