Naslov
Copper doped ceria catalyst for soot oxidation

Autori
Mužina, Katarina ; Musakana, Fadzai Praise ; Kurajica, Stanislav

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

Izvornik
Book of Abstracts: 1st International Conference of the Croatian Ceramic Society (CroCerS): Advanced Ceramics in Derivative Configurations (1st ACDC 2023) / Mandić, Vilko - Zagreb : Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, 2023, 45-45

ISBN
978-953-6470-99-0

Skup
1st International Conference of the Croatian Ceramic Society (CroCerS): Advanced Ceramics in Derivative Configurations (1st ACDC 2023)

Mjesto i datum
Zagreb, Hrvatska, 26.04.2023. - 29.04.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
ceria ; nanocatalysts ; combustion synthesis ; soot oxidation

Sažetak
Diesel engines possess high durability, optimal fuel efficiency, and lower carbon dioxide emissions in comparison to petrol engines. However, particulate matter, i.e. soot resulting from incomplete fuel combustion presents a serious environmental and health hazard. Therefore, the advancement of catalytic converters for elimination of harmful exhaust pollutants, or more precisely the development of adequate catalysts for soot oxidation is of great importance. This work deals with catalytic activity of copper doped ceria-alumina nanocatalyst aimed for use in soot oxidation process as a cost-effective, sustainable alternative to noble metal based catalysts. Samples without and with 2 mol.% of copper were prepared by combustion synthesis method with glycine as fuel and metal nitrates as oxidants, and subsequently thermally treated at 800 °C for 2 hours. The physicochemical properties of the prepared catalysts were determined using X-ray diffraction analysis, scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transformed infrared spectroscopy and differential thermal and thermogravimetric analysis. Kissinger-Akahira-Sunose method was applied for non-isothermal kinetic analysis of the soot oxidation process in the presence of prepared catalysts. The crystallite size of the Cu doped sample is significantly smaller in comparison to the undoped sample, but both catalysts exhibit an extremely porous morphology. The copper doped sample showed the best catalytic activity in the soot oxidation process, as well as a continuous decline in activation energy with increasing degree of conversion.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo, Temeljne tehničke znanosti

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