Highly efficient reduction of bromate to bromide over mono and bimetallic ZSM5 catalysts

被引：46

作者：

Freitas, C. M. A. S. ^{[1
]}

Soares, O. S. G. P. ^{[2
]}

Orfao, J. J. M. ^{[2
]}

Fonseca, A. M. ^{[1
]}

Pereira, M. F. R. ^{[2
]}

Neves, I. C. ^{[1
]}

机构：

[1] Univ Minho, Dept Chem, Ctr Chem, P-4710057 Braga, Portugal

[2] Univ Porto, Fac Engn, Dept Engn Quim, Lab Catalise & Mat LCM,Lab Associado LSRE LCM, P-4200465 Oporto, Portugal

来源：

GREEN CHEMISTRY | 2015年 / 17卷 / 08期

关键词：

PD-CU; DRINKING-WATER; HYDROGENATION; ZEOLITE; NITRATE; PALLADIUM; SUPPORTS; REMOVAL; ION;

D O I：

10.1039/c5gc00777a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reduction of bromate to bromide was successfully catalyzed by mono and bimetallic catalysts based on ZSM5 zeolites. This reaction is important since the presence of bromate in water is potentially carcinogenic to humans. The catalysts were prepared by ion-exchange and incipient wetness methods with different metals (copper, palladium, rhodium and thorium) using ZSM5. Several analytical techniques (N-2 adsorption, TPR experiments, NH3-TPD, FTIR, XRD, SEM/EDX and TEM/EDX) were used to characterize the mono and bimetallic catalysts prepared by the two methods. The catalytic tests were carried out in a semi-batch reactor under hydrogen, working at room temperature and pressure. All catalysts prepared are undeniably effective in achieving the complete conversion of bromate into bromide. The most promising among the catalysts tested in this work are the palladium bimetallic catalysts.

引用

页码：4247 / 4254

页数：8

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