Palladium supported on amino functionalized magnetic MCM-41 for catalytic hydrogenation of aqueous bromate

被引：16
作者：
Chen, Huan [1 ]
Zhang, Peng [1 ]
Tan, Wenhui [1 ]
Jiang, Fang [1 ]
Tang, Rong [2 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Environm & Biol Engn, Key Lab Jiangsu Prov Chem Pollut Control & Resour, Nanjing 210094, Jiangsu, Peoples R China
[2] Jiangsu Open Univ, Nanjing 210036, Jiangsu, Peoples R China
来源：
RSC ADVANCES | 2014年 / 4卷 / 73期
基金：
中国博士后科学基金;
关键词：
LIQUID-PHASE HYDRODECHLORINATION; PARTICLE-SIZE; PD; REDUCTION; NANOPARTICLES; CHLOROBENZENE; EFFICIENT; PD/AL2O3; AU;
D O I：
10.1039/c4ra05593d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Pd supported on amino functionalized magnetic MCM-41 was synthesized by deposition-precipitation (DP) and impregnation (IMP) methods. The catalysts were characterized by N-2 adsorption, XRD, FTIR, CO chemisorption, TEM, XPS and VSM. Liquid phase catalytic hydrogenation of bromate was tested over these catalysts. The results showed that the DP catalyst had a higher activity than the IMP catalyst, due to its higher Pd dispersion. With regards to DP catalysts supported on magnetic MCM-41 with different NH2 loading amounts, a positive relationship was observed between the Pd dispersion and the initial catalytic activity. Moreover, the DP-2 catalyst (supported on magnetic MCM-41 with 0.99 mmol of NH2 per g) was completely recovered with an external magnetic field, and the catalytic activity remained unaltered even after 5 repeated cycles for the bromate reduction.
引用
收藏
页码：38743 / 38749
页数：7
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