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

• Type: Article in International Scientific Journal
• Date: 2015

Authors

C. M. A. S. Freitas (Author) Other; O. S. G. P. Soares (Author) FEUP; J. J. M. Órfão (Author) FEUP; A. M. Fonseca (Author) Other; M. F. R. Pereira (Author) FEUP; I. C. Neves (Author) Other

Journal

Title: Green Chemistry

Vol. 17 No. 8

Pages: 4247-4254

ISSN: 1463-9262

Publisher: Royal Society of Chemistry

Indexing

ISI Web of Knowledge - 21 Citations

Scopus - 34 Citations

Associated Projects

LSRE-LCM - Laboratório de Processos de Separação e Reação - Laboratório de Catálise e Materiais

Other information

Authenticus ID: P-00G-F12

DOI: 10.1039/c5gc00777a

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8