Sammanfattning
Silver modified zeolite (Bulgarian natural clinoptilolite) and Ag/silica catalysts were synthesized by ion exchange and incipient wet impregnation method respectively and characterized by different techniques. DC arc-AES was used for Ag detection. XRD spectra show that Ag is loaded over the surface of the SiO2 sample and that after the ion-exchange process the HEU type structure of clinoptilolite is retained. UV-VIS (specific reflection at 310nm) and IR (band at 695cm-1) spectroscopy analysis proved that silver is loaded as a T-atom into zeolite channels as Ag+, instead of Na+, Ca2+, or K+ ions, existing in the natural clinoptilolite form. The samples Ag/SiO2 and Ag-clinoptilolite were tested as catalysts for decomposition of gas phase ozone. Very high catalytic activity (up to 99%) was observed and at the same time the catalysts remained active over time at room temperature.
Originalspråk | Engelska |
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Sidor (från-till) | 16-19 |
Antal sidor | 4 |
Tidskrift | Journal of Hazardous Materials |
Volym | 184 |
Nummer | 1-3 |
DOI | |
Status | Publicerad - dec. 2010 |
MoE-publikationstyp | A1 Tidskriftsartikel-refererad |