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Catalytic Activity of Cobalt Grafted on Ordered Mesoporous Silica Materials in N2O Decomposition and CO Oxidation.
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SYSNO ASEP 0474676 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Catalytic Activity of Cobalt Grafted on Ordered Mesoporous Silica Materials in N2O Decomposition and CO Oxidation. Author(s) Kuboňová, L. (CZ)
Peikertová, P. (CZ)
Mamulová Kutláková, K. (CZ)
Jirátová, Květa (UCHP-M) RID, ORCID, SAI
Słowik, G. (PL)
Obalová, L. (CZ)
Cool, P. (BE)Source Title Molecular Catalysis. - : Elsevier - ISSN 2468-8231
Roč. 437, AUG 2017 (2017), s. 57-72Number of pages 16 s. Language eng - English Country NL - Netherlands Keywords mesoporous ordered silica ; cobalt ; N2O decomposition Subject RIV CI - Industrial Chemistry, Chemical Engineering OECD category Chemical process engineering R&D Projects GA14-13750S GA ČR - Czech Science Foundation (CSF) Institutional support UCHP-M - RVO:67985858 UT WOS 000403992800007 EID SCOPUS 85029599019 DOI 10.1016/j.mcat.2017.04.037 Annotation Three different ordered mesoporous silica materials, such as MCM-41, Al incorporated into the silica framework MCM-41 (mass ratio Si/Al = 9) and SBA-15, were prepared. Furthermore, aluminum was grafted on the surface of MCM-41 (mass ratio Si/Al = 16) and SBA-15 (mass ratio Si/Al = 23) by the molecular designed dispersion (MDD) method. In a next step, cobalt (Co = 10–12 wt%), as an active metal for redox reactions, was introduced by the MDD technique. Catalytic properties were evaluated for two model reactions: N2O decomposition and CO oxidation. All prepared catalysts showed poor activity in the reaction of N2O decomposition and the use of reducing agent (carbon monoxide) improved it only little. Contrary to this, all catalysts were signifi-cantly more active for CO oxidation by oxygen. The highest activity was reached over the SBA + Co catalyst which is proposed to be due to the smallest size of tetrahedral Co(II) species on SBA-15 silica support. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2018
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