Izvorni znanstveni članak
Ethanol Total Oxidation Over Calcined Layered Double Hydroxides Modified with Organic Components
J. Ludvíková
; Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v.v.i., Rozvojová 135, 165 02 Prague 6 Suchdol, Češka Republika
K. Jirátová
; Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v.v.i., Rozvojová 135, 165 02 Prague 6 Suchdol, Češka Republika
J. Klempa
; Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, v.v.i., Rozvojová 135, 165 02 Prague 6 Suchdol, Češka Republika
H. Raabová
; Department of Solid State Chemistry, Institute of Chemical Technology, Prague, Technická 5, 166 28 Prague, Češka Republika
Z. Zapivovarski Votipka
; Department of Solid State Chemistry, Institute of Chemical Technology, Prague, Technická 5, 166 28 Prague, Češka Republika
F. Kovanda
; Department of Solid State Chemistry, Institute of Chemical Technology, Prague, Technická 5, 166 28 Prague, Češka Republika
Sažetak
Coprecipitation of Co, Mn, and Al nitrates by a solution of Na2CO3 and NaOH in the presence of Pluronic ® P123 has led to layered double hydroxide (LDH) precursors with hydrotalcite-like structure. Their calcination gave spinel-type mixed oxides; the presence of organic template increased both BET and mesopore surface areas of the calcined products. TPR profiles of the samples modified with Pluronic ® P123 exhibited a shift of reduction maxima to lower temperatures, similarly as increasing sodium content in the catalysts. However, though the physical-chemical properties of Co-Mn-Al mixed oxides and their catalytic activity in ethanol oxidation were slightly improved, the changes evolved by the presence of Pluronic ® P123 during precipitation of LDH precursors were rather small.
Ključne riječi
Layered double hydroxides; Pluronic ® P123; mixed oxides; volatile organic compounds oxidation
Hrčak ID:
101552
URI
Datum izdavanja:
9.5.2013.
Posjeta: 1.225 *