Back to Search
Start Over
Coupling catalytic hydrolysis and oxidation of HCN over HZSM-5 modified by metal (Fe,Cu) oxides.
- Source :
-
Applied Surface Science . Jan2018 Part B, Vol. 427, p843-850. 8p. - Publication Year :
- 2018
-
Abstract
- In this work, a series of metal oxides (Fe,Cu) modified HZSM-5 catalysts were synthesized by incipient-wetness impregnation method and then characterized by XRD, N 2 adsorption-desorption, H 2 -TPR, NH 3 -TPD, UV-vis, FT-IR and XPS measurements. The catalytic hydrolysis and oxidation behaviors toward HCN were investigated. The results indicated that the Fe-Cu/HZSM-5 catalysts exhibited more excellent performence on coupling catalytic hydrolysis and oxidation of HCN than HZSM-5, Fe/HZSM-5, Cu/HZSM-5, and both nearly 100% HCN conversion and 80% N 2 selectivity were obtained at about 250 °C. The improved catalytic performance could be ascribed to the creation of highly dispersed iron and copper composites on the surface of the HZSM-5 support, the excellent redox and regulated acid properties of the active ingredients. Moreover, the highly N 2 selectivity could be attributed to the good interaction between the Fe and Cu nanocomposites which was facilitated to the NH 3 -SCR (selective catalytic reduction of NO by NH 3 ) reaction. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 427
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 126162939
- Full Text :
- https://doi.org/10.1016/j.apsusc.2017.09.061