CATALYTIC ACTIVITY OF COBALT IMPREGNATED ON ORDERED MESOPOROUS SILICA MATERIALS IN N2O DECOMPOSITION

1 Kuboňová Lenka
Co-authors:
1,2 Fridrichová Dagmar 1,3 Peikertová Pavlína 3 Mamulová Kutláková Kateřina 3 Kozubová Světlana 4 Jirátová Květuše 1,5 Obalová Lucie 6 Cool Pegie
Institutions:
1 Institute of Environmental Technology, VŠB-TU Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic
2 Energy Units for Utilization of non Traditional Energy Sources, VŠB-TU Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic
3 Nanotechnology Centre, VŠB-TU Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic
4 Institute of Chemical Process Fundamentals of the ASCR, v.v.i., Rozvojová 135, 16502 Prague, Czech Republic
5 Faculty of Metallurgy and Materials Engineering, VŠB-TU Ostrava, 17. listopadu 15, 70833 Ostrava, Czech Republic
6 University of Antwerp, Laboratory of Adsorption and Catalysis, Department of Chemistry, Universiteitsplein 1, B-2610 Wilrijk, Belgium
Conference:
7th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 14th - 16th 2015
Proceedings:
Proceedings 7th International Conference on Nanomaterials - Research & Application
Pages:
242-248
ISBN:
978-80-87294-59-8
ISSN:
2694-930X
Published:
11th January 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
27 views / 8 downloads
Abstract

Three different ordered mesoporous silica materials, such as MCM-41, Al containing MCM-41 (mass ratio Si/Al = 10) and SBA-15, were prepared. In a next step, cobalt (5-8 wt%) as an active metal for redox reactions, was introduced by the impregnation. The prepared catalysts were characterized by AAS, EDX, N2 physisorption, XRD, DR UV-Vis spectroscopy, Raman spectroscopy, TPR-H2 and their catalytic properties were evaluated for N2O decomposition and reduction. The catalysts showed poor activity in N2O decomposition while the use of reducing agent (carbon monoxide) was beneficial for their catalytic activities. The lowest catalytic activity showed Co/Al-MCM indicating that the aggregated CoxOy species present in this catalyst were inactive and not beneficial for the catalytic activity.

Keywords: Mesoporous ordered silica; Aluminum; Cobalt; Impregnation; N2O decomposition
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