Catalytic Activity of Cobalt Impregnated on Ordered Mesoporous Silica Materials in N2O Decomposition.

0472862 - ÚCHP 2017 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Kuboňová, L. - Fridrichová, D. - Peikertová, P. - Mamulová Kutláková, K. - Kozubová, S. - Jirátová, Květa - Obalová, L. - Cool, P.
Catalytic Activity of Cobalt Impregnated on Ordered Mesoporous Silica Materials in N2O Decomposition.
Conference Proceedings. Ostrava: TANGER LTD, 2015, s. 242-248. ISBN 978-80-87294-63-5.
[International Conference on Nanomaterials - Research & Application /7./. Brno (CZ), 14.10.2015-15.10.2015]
Institucionální podpora: RVO:67985858
Klíčová slova: mesoporous ordered silica * aluminum * cobalt
Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství

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, N-2 physisorption, XRD, DR UV-Vis spectroscopy, Raman spectroscopy, TPR-H-2 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.
Trvalý link: http://hdl.handle.net/11104/0270085