3D Porous Carbon Framework Stabilized Ultra-Uniform Nano γ-Fe2O3: A Useful Catalyst System

被引:21
作者
Ai, Yongjian [1 ,2 ]
He, Mengqi [2 ]
Lv, Qianrui [1 ]
Liu, Lei [2 ]
Sun, Hong-bin [2 ]
Ding, Mingyu [1 ]
Liang, Qionglin [1 ]
机构
[1] Tsinghua Univ, Key Lab Bioorgan Phosphorus Chem & Chem Biol, Beijing Key Lab Microanalyt Methods & Instrumenta, Minist Educ,Dept Chem, Beijing 100084, Peoples R China
[2] Northeastern Univ, Dept Chem, Shenyang 110819, Liaoning, Peoples R China
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
3D porous carbon frameworks; aldol condensation; heterogeneous catalysis; hydrogen transfer reaction; gamma-Fe2O3; AROMATIC NITRO-COMPOUNDS; IRON-OXIDE NANOPARTICLES; HYDRAZINE HYDRATE; OXYGEN REDUCTION; TRANSFER HYDROGENATION; HIGHLY EFFICIENT; CHEMOSELECTIVE HYDROGENATION; SELECTIVE HYDROGENATION; FE3O4; NANOPARTICLES; HYDROXIDE CATALYST;
D O I
10.1002/asia.201701457
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We present a novel strategy for the scalable fabrication of gamma-Fe2O3@3DPCF, a three-dimensional porous carbon framework (PCF) anchored ultra-uniform and ultrastable gamma-Fe2O3 nanocatalyst. The gamma-Fe2O3@3DPCF nanocomposites were facilely prepared with the following route: condensation of iron(III) acetylacetonate with acetylacetonate at room temperature to form the polymer precursor (PPr), which was carbonized subsequently at 800 degrees C. The homogeneous aldol condensation offered an ultra-uniform distribution of iron, so that the gamma-Fe2O3 nanoparticles (NPs) were uniformly distributed in the 3D carbon architecture with the average size of approximate 20 nm. The Fe2O3 NPs were capped with carbon, so that the iron oxide maintained its gamma-phase instead of the more stable alpha-phase. The nanocomposite was an excellent catalyst for the reduction of nitroarene; it gave > 99% conversion and 100% selectivity for the reduction of nitroarenes to the corresponding anilines at 100 degrees C. The fabrication of the gamma-Fe2O3@3DPCF nanocatalyst represents a green and scalable method for the synthesis of novel carbon-based metal oxide nanostructures.
引用
收藏
页码:89 / 98
页数:10
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