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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
刊名CHEMICAL SCIENCE
2017-07-01
DOI10.1039/c7sc00568g
8页:5126-5131
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]SINGLE-ATOM CATALYST ; GAS SHIFT REACTION ; NITRO-COMPOUNDS ; SUBSTITUTED NITROAROMATICS ; SELECTIVE HYDROGENATION ; CARBON SUPPORTS ; NANOPARTICLES ; REDUCTION ; GOLD ; CO
英文摘要The 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.
语种英语
WOS记录号WOS:000404617300050
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152097
专题中国科学院大连化学物理研究所
作者单位1.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
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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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