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Structure-Activity Relationship in the N2O Decomposition over Ni-(Mg)-Al and Ni-(Mg)-Mn Mixed Oxides Prepared from Hydrotalcite-like Precursors
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SYSNO ASEP 0055172 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Structure-Activity Relationship in the N2O Decomposition over Ni-(Mg)-Al and Ni-(Mg)-Mn Mixed Oxides Prepared from Hydrotalcite-like Precursors Title Vztah mezi strukturou a aktivitou Ni-(Mg)-Al a Ni-(Mg)-Mn směsných oxidů připravených z hydrotalcitů v reakci rozkjladu N2O Author(s) Obalová, L. (CZ)
Jirátová, Květa (UCHP-M) RID, ORCID, SAI
Kovanda, F. (CZ)
Valášková, M. (CZ)
Balabánová, Jana (UCHP-M) RID, ORCID, SAI
Pacultová, K. (CZ)Source Title Journal of Molecular Catalysis A-Chemical. - : Elsevier - ISSN 1381-1169
Roč. 248, 1-2 (2006), s. 210-219Number of pages 20 s. Language eng - English Country NL - Netherlands Keywords N2O decomposition ; mixed oxide catalyst ; layered double hydroxides Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects GA106/05/0366 GA ČR - Czech Science Foundation (CSF) GA104/04/2116 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40720504 - UCHP-M (2005-2011) Annotation N2O decomposition over catalysts prepared by thermal decomposition of Ni-(Mg)-MIII (MIII = Al or Mn) hydrotalcite-like precursors was studied. Ni-Al and Mg-Mn catalysts exhibited high catalytic activity but catalysts containing both transition metal cations (i.e. Ni and Mn) were less active. Their lower activities were explained by different oxidation states of manganese and nickel in the mixed oxide systems. The presence of oxygen in reaction mixture caused inhibition of the reaction rate to the certain oxygen pressure, while at higher oxygen pressure the N2O conversion is nearly constant. Relationships between the observed activity and the amount of reducible components determined from TPR experiments and the portion of strong basic sites determined from TPD experiments were discussed. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2007
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