Bimetal–organic frameworks for functionality optimization: MnFe-MOF-74 as a stable and efficient catalyst for the epoxidation of alkenes with H2O2

Kuo Yuan; Tianqun Song; Dawei Wang; Ye Zou; Jinfeng Li; Xiaotao Zhang; Zhiyong Tang; Wenping Hu

doi:10.1039/C7NR08882E

Bimetal–organic frameworks for functionality optimization: MnFe-MOF-74 as a stable and efficient catalyst for the epoxidation of alkenes with H₂O₂†

Kuo Yuan,^a Tianqun Song,^a Dawei Wang,^b Ye Zou,^c Jinfeng Li,^a Xiaotao Zhang,

^a Zhiyong Tang

^b and Wenping Hu*^ac

Author affiliations

* Corresponding authors

^a Department of Chemistry, School of Science & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
E-mail: huwp@tju.edu.cn

^b Chinese Academy of Sciences (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China

^c Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

Abstract

In this work, we synthesized a series of microcrystalline Mn_xN_100−x-MOF-74 (N = Fe, Co and Ni) materials by a one-pot reaction. Powder X-ray diffraction (PXRD) patterns of Mn_xN_100−x-MOF-74 matched well with those of single-metal MOF-74, and the scanning electron microscopy (SEM) images exhibited homogeneous nanocrystallites aggregated together. The amounts and dispersion of metals were analyzed by using inductively coupled plasma (ICP) and energy-dispersive X-ray spectroscopy (EDS), separately. Mn_xN_100−x-MOF-74 could remain crystalline and efficiently catalyze the epoxidation of alkenes in DMF with NaHCO₃ and 30% H₂O₂. In particular, Mn_29.39Fe_70.61-MOF-74 can achieve almost 100% conversion for styrene with 95.0% selectivity towards styrene oxide and be reused at least five times without loss of activity.

This article is part of the themed collection: Research selection from the NCNST

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Article information

DOI: https://doi.org/10.1039/C7NR08882E
Article type: Communication
Submitted: 28 Huk 2017
Accepted: 10 N’w 2017
First published: 15 N’w 2017

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Nanoscale, 2018,10, 1591-1597

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Bimetal–organic frameworks for functionality optimization: MnFe-MOF-74 as a stable and efficient catalyst for the epoxidation of alkenes with H₂O₂

K. Yuan, T. Song, D. Wang, Y. Zou, J. Li, X. Zhang, Z. Tang and W. Hu, Nanoscale, 2018, 10, 1591 DOI: 10.1039/C7NR08882E

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