第一作者：Hongjie Bao

通讯作者：Hong-bin Sun,Qionglin Liang

合写作者：Yunong Li, Lei Liu, Yongjian Ai, Junjie Zhou, Li Qi, Ruihang Jiang, Zenan Hu, Jingting Wang

发表刊物：Chemistry-A European Journal

期号：54

卷号：24

影响因子：4.1

DOI码：10.1002/chem.201801942

所属单位：Department of Chemistry, Northeastern University

教研室：物理化学

刊物所在地：GERMANY

摘要：A novel core-shell structured nanocatalyst (Fe3O4@SiO2-NH2-FeCu nanoparticles) with ultrafine FeCu alloy NPs magnetically immobilized in porous silica has been fabricated. The obtained catalyst revealed excellent activity and chemoselectivity for catalyzing the hydrogenation of nitroarenes to corresponding anilines using hydrazine hydrate as the hydrogen source, and the reaction could be carried out smoothly in water, which is an environmentally friendly solvent. The FeCu alloy effectively prevented the dehalogenation of halonitroarenes, and X-ray photoelectron spectroscopy (XPS) study showed that it resulted from the electron-enrichment of Fe from Cu. A kinetics study indicated that the reaction order was about 1.5 towards 4-CNB and the apparent active energy (E-a) was 48.1 kJ mol(-1), which is a relatively low value. Furthermore, the FeCu NPs are magnetically immobilized in the silica spheres (Fe3O4@SiO2), therefore the catalyst can be easily recovered by use of an external magnet and also possesses a long life time.

关键字：alloys; copper; heterogeneous catalysis; hydrogenation; iron; magnetic immobilization

论文编号：WOS:000445447400019

学科门类：理学

一级学科：化学

页面范围：14418-14424

ISSN号：0947-6539

是否译文：否