https://doi.org/10.15255/KUI.2012.031
Published: Kem. Ind. 62 (5-6) (2013) 137–146
Paper reference number: KUI-31/2012
Paper type: Original scientific paper
Download paper:  PDF

Ethanol Total Oxidation Over Calcined Layered Double Hydroxides Modified with Organic Components

J. Ludvíková, K. Jirátová, J. Klempa, H. Raabová, Z. Zapivovarski Votipka and F. Kovanda

Abstract

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.

This work is licensed under a Creative Commons Attribution 4.0 International License

Keywords

layered double hydroxides, Pluronic® P123, mixed oxides, volatile organic compounds oxidation