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Optimization of Cs Content in Co-Mn-Al Mixed Oxide as Catalyst for N2O Decomposition.
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SYSNO ASEP 0456093 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Optimization of Cs Content in Co-Mn-Al Mixed Oxide as Catalyst for N2O Decomposition. Author(s) Chromčáková, Ž. (CZ)
Obalová, L. (CZ)
Kustrowski, P. (PL)
Drozdek, M. (PL)
Karásková, K. (CZ)
Jirátová, Květa (UCHP-M) RID, ORCID, SAI
Kovanda, F. (CZ)Source Title Research on Chemical Intermediates. - : Springer - ISSN 0922-6168
Roč. 41, č. 12 (2015), s. 9319-9332Number of pages 14 s. Action Pannonian Symposium on Catalysis /12./ Event date 16.09.2014 - 20.09.2014 VEvent location Třešť Country CZ - Czech Republic Event type WRD Language eng - English Country NL - Netherlands Keywords nitrous oxide ; mixed oxide catalysts ; cesium promoter ; layered double hydroxides Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects GA14-13750S GA ČR - Czech Science Foundation (CSF) Institutional support UCHP-M - RVO:67985858 UT WOS 000365743300014 EID SCOPUS 84953634988 DOI 10.1007/s11164-015-2008-3 Annotation A series of Co–Mn–Al mixed oxide catalysts with different Cs contents (0.5–4.6 wt%) was prepared by calcination of Co–Mn–Al hydrotalcite (Co:Mn:Al = 4:1:1), followed by impregnation by cesium salt (CsNO3, Cs2CO3) using the pore filling method. Chemical analysis, N2 sorption, temperature programmed reduction (TPR)-H2, temperature programmed desorption (TPD)-CO2 and TPD-NH3 and X-ray photoelectron spectroscopy (XPS) were used to characterize the catalysts. All prepared catalysts were tested for N2O catalytic decomposition in inert gas and in the presence of oxygen, water vapor and nitric oxide. The influence of Cs salts used for catalyst preparation and cesium content on catalyst activity were studied. A significant increase in catalytic activity with increasing amount of cesium promoter was observed without respect to the Cs precursor. The strong promotional effect of cesium is electronic in nature and is discussed in term of changes in surface composition and catalyst reducibility. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2016
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