Matějová L, Troppová I, Pitkäaho S, Pacultová K, Fridrichová D, Kania O, Keiski R. Oxidation of Methanol and Dichloromethane on TiO₂-CeO₂-CuO, TiO₂-CeO₂ and TiO₂-CuO@VUKOPOR®A Ceramic Foams. Nanomaterials. 2023; 13(7):1148. https://doi.org/10.3390/nano13071148
Oxidation of methanol and dichloromethane on TiO₂-CeO₂-CuO, TiO₂-CeO₂ and TiO₂-CuO@VUKOPOR®A ceramic foams
|Author:||Matějová, Lenka1; Troppová, Ivana1; Pitkäaho, Satu2;|
1Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
2Environmental and Chemical Engineering, Faculty of Technology, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland
3Elvac Ekotechnika s.r.o, Taviˇcská 337/23, 703 00 Ostrava-Vítkovice, Czech Republic
|Online Access:||PDF Full Text (PDF, 8.4 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe20230908121838
Multidisciplinary Digital Publishing Institute,
|Publish Date:|| 2023-09-08
The application-attractive form of TiO₂, CeO₂ and CuO-based open-cell foam supported catalysts was designed to investigate their catalytic performance in oxidation of two model volatile organic compounds—methanol and dichloromethane. TiO₂-CeO₂, TiO₂-CuO and TiO₂-CeO₂-CuO catalysts as thin films were deposited on VUKOPOR®A ceramic foam using a reverse micelles-controlled sol-gel method, dip-coating and calcination. Three prepared catalytic foams were investigated via light-off tests in methanol and dichloromethane oxidation in the temperature range of 45–400 °C and 100–500 °C, respectively, at GHSV of 11, 600 h⁻¹, which fits to semi-pilot/industrial conditions. TiO₂-CuO@VUKOPOR®A foam showed the best catalytic activity and CO₂ yield in methanol oxidation due to its low weak Lewis acidity, high weak basicity and easily reducible CuO species and proved good catalytic stability within 20 h test. TiO₂-CeO₂-CuO@VUKOPOR®A foam was the best in dichloromethane oxidation. Despite of its lower catalytic activity compared to TiO₂-CeO₂@VUKOPOR®A foam, its highly-reducible -O-Cu-Ce-O- active surface sites led to the highest CO₂2 yield and the highest weak Lewis acidity contributed to the highest HCl yield. This foam also showed the lowest amount of chlorine deposits.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
216 Materials engineering
215 Chemical engineering
This work was supported by EU structural funding in Operational Programme Research, Development and Education within the project “COOPERATION” (project No. CZ.02.1.01./0.0/0.0/17_049/0008419). Experimental results were accomplished using Large Research Infrastructure ENREGAT supported by the Ministry of Education, Youth and Sports of the Czech Republic (project No. LM2018098).
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).