Naslov
Copper doped ceria nanocatalyst for VOCs oxidation

Autori
Mužina, Katarina ; Kurajica, Stanislav ; Guggenberger, Patrick ; Duplančić, Marina ; Dražić, Goran

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Ceramics in Europe - Abstract Book / - Krakov : European Ceramics Society, 2022, 30-30

ISBN
978-83-942760-9-6

Skup
Ceramics in Europe 2021

Mjesto i datum
Kraków, Poljska, 10.07.2022. - 14.07.2022

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
ceria ; VOC ; catalysis

Sažetak
Volatile organic compounds (VOCs) present a major environmental problem, as well as a health hazard. Catalytic oxidation is a promising method for their elimination from anthropogenic emission sources. Ceria (CeO2) is an important and widely applied catalytic material used in three-way catalytic converters, diesel particulate filters, solid oxide fuel cells, water-gas shift reaction, etc. Furthermore, many studies report on its high efficiency in the catalytic oxidation of VOCs. There are two main ways of improving the catalytic activity of ceria. The first one is the reduction of particle size to the nano level, which increases the specific surface area and reactivity of the prepared catalyst. The second one is doping with various metals with lower radius and valence, which enhances the oxygen storage and release capacity of ceria. The aim of this work was to prepare ceria nanocatalysts doped with copper in various amounts via the hydrothermal method. The characterization of the prepared materials was conducted by employing X-ray diffraction analysis, transmission electron microscopy, electron energy loss spectroscopy, N2 adsorption-desorption isotherms and X-ray photoelectron spectroscopy. The catalytic activity of the nanocatalysts was tested for the toluene oxidation process. The results show that copper is incorporated into the ceria crystal lattice in amounts significantly lower than nominal. However, a decrease in particle size and a notable increase of catalytic activity of ceria with the addition of copper were observed, proving copper doped ceria a suitable catalyst for VOCs oxidation.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti

POVEZANOST RADA