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Remarkable effect of alkalis on the chemoselective hydrogenation of functionalized nitroarenes over high-loading Pt/FeOx catalysts
Wei, Haisheng1; Ren, Yujing1,2; Wang, Aiqin1; Liu, Xiaoyan1; Liu, Xin1; Zhang, Leilei1; Miao, Shu1; Li, Lin1; Liu, Jingyue3; Wang, Junhu1; Wang, Guofu4; Su, Dangsheng1; Zhang, Tao1
Source PublicationCHEMICAL SCIENCE
2017-07-01
DOI10.1039/c7sc00568g
Volume8Pages:5126-5131
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordSINGLE-ATOM CATALYST ; GAS SHIFT REACTION ; NITRO-COMPOUNDS ; SUBSTITUTED NITROAROMATICS ; SELECTIVE HYDROGENATION ; CARBON SUPPORTS ; NANOPARTICLES ; REDUCTION ; GOLD ; CO
AbstractThe chemoselective hydrogenation of substituted nitroarenes to form the corresponding functionalized anilines is an important type of reaction in fine chemistry, and the chemoselectivity is critically dependent on the rational design of the catalysts. This reaction has rarely been accomplished over high-loading Pt catalysts due to the formation of Pt crystals. Here, for the first time, we report that alkali metals (Li+, Na+, K+, etc.) can transform the non-selective high loading Pt/FeOx catalyst to a highly chemoselective one. The best result was obtained over a 5% Na-2.16% Pt/FeOx catalyst, which enhanced the chemoselectivity from 66.4% to 97.4% while the activity remained almost unchanged for the probe reaction of 3-nitrostyrene hydrogenation to 3-aminostyrene. Using aberration-corrected HAADF-STEM, in situ XAS, (57) and Fe Mossbauer and DRIFT spectroscopy, the active site of a Pt-O-Na-O-Fe-like species was proposed, which ensures that the Pt centers are isolated and positively charged for the preferential adsorption of the -NO2 group.
Language英语
WOS IDWOS:000404617300050
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/152097
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, IChEM, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA
4.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
Recommended Citation
GB/T 7714
Wei, Haisheng,Ren, Yujing,Wang, Aiqin,et al. Remarkable effect of alkalis on the chemoselective hydrogenation of functionalized nitroarenes over high-loading Pt/FeOx catalysts[J]. CHEMICAL SCIENCE,2017,8:5126-5131.
APA Wei, Haisheng.,Ren, Yujing.,Wang, Aiqin.,Liu, Xiaoyan.,Liu, Xin.,...&Zhang, Tao.(2017).Remarkable effect of alkalis on the chemoselective hydrogenation of functionalized nitroarenes over high-loading Pt/FeOx catalysts.CHEMICAL SCIENCE,8,5126-5131.
MLA Wei, Haisheng,et al."Remarkable effect of alkalis on the chemoselective hydrogenation of functionalized nitroarenes over high-loading Pt/FeOx catalysts".CHEMICAL SCIENCE 8(2017):5126-5131.
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