Ozone decomposition on Ag/SiO2 and Ag/clinoptilolite catalysts at ambient temperature

Penko Nikolov*, Krassimir Genov, Petya Konova, Katya Milenova, Todor Batakliev, Vladimir Georgiev, Narendra Kumar, Dipak K. Sarker, Dimitar Pishev, Slavcho Rakovsky

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

58 Sitaatiot (Scopus)

Abstrakti

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.

AlkuperäiskieliEnglanti
Sivut16-19
Sivumäärä4
JulkaisuJournal of Hazardous Materials
Vuosikerta184
Numero1-3
DOI - pysyväislinkit
TilaJulkaistu - jouluk. 2010
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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