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题名: Remarkable effect of alkalis on the chemoselective hydrogenation of functionalized nitroarenes over high-loading Pt/FeOx catalysts
作者: 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
发表日期: 2017-07-01
DOI: 10.1039/c7sc00568g
卷: 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
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.
关键词[WOS]: SINGLE-ATOM CATALYST ;  GAS SHIFT REACTION ;  NITRO-COMPOUNDS ;  SUBSTITUTED NITROAROMATICS ;  SELECTIVE HYDROGENATION ;  CARBON SUPPORTS ;  NANOPARTICLES ;  REDUCTION ;  GOLD ;  CO
语种: 英语
WOS记录号: WOS:000404617300050
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152097
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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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

Recommended Citation:
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.
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