Naslov
MOx-CeO2-Al2O3 catalysts for soot oxidation process

Autori
Mužina, Katarina ; Plešić, Filip ; Mandić, Vilko ; Kurajica, Stanislav

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
21th International Conference on Materials, Tribology & Recycling - MATRIB 2021 - Conference Proceedings / Ćorić, Danko ; Šolić, Sanja ; Ivušić, Franjo - Vela Luka : Hrvatsko društvo za materijale i tribologiju (HDMT), 2021, 385-397

Skup
21th International Conference on Materials (MATRIB 2021)

Mjesto i datum
Vela Luka, Hrvatska, 30.06.2021. - 02.07.2021

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Ceria ; Mixed oxides ; Combustion synthesis ; Soot oxidation

Sažetak
Ceria (CeO2) is used in a doped or mixed oxide form in catalytic diesel particulate filters (CDPF) as a catalyst for direct soot oxidation process. Soot particles pose a serious threat to human health and the environment, so their successful elimination from automobile exhaust gas is of great importance. In this work, CeO2- Al2O3, MnOx-CeO2-Al2O3 and CuO-CeO2-Al2O3 mixed oxides were prepared by combustion synthesis using glycine as fuel and metal nitrates as oxidants. Samples were characterized using X-ray diffraction analysis (XRD), differential thermal and thermo-gravimetric analysis (DTA-TGA), Fourier transformed infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). According to XRD, only the sample CuO-CeO2-Al2O3 was crystalline after the synthesis, while the remaining samples were amorphous. FTIR analysis showed the presence of residual nitrates in all samples. Consequently, samples were thermally treated at 800 °C for 2 hours, which resulted in mixed oxides with CeO2 and γ-Al2O3 as dominant phases and crystallite sizes in the nano range. The catalytic activity test showed that all three samples exhibit good catalytic activity in the soot oxidation process.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti

POVEZANOST RADA