Nanostructured TiO2, Fe2O3, CeO2 and CuO-based catalysts prepared using titanyl sulphate in dichloromethane oxidation

Kód výsledku v IS VaVaI

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RIV/61989100:27710/24:10255677

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Nanostructured TiO2, Fe2O3, CeO2 and CuO-based catalysts prepared using titanyl sulphate in dichloromethane oxidation

Popis výsledku v původním jazyce

16th Pannonian International Symposium on Catalysis - posterA set of powder catalysts TiO2-CeO2-CuO (69:28:3 wt.%), TiO2-CeO2-Fe2O3 (69:12:19 wt.%) and TiO2-Fe2O3 (71:29 wt.%) was prepared by the co-precipitation method, using titanyl sulphate as a precursor for TiO2 and cerium (III), iron (III) and copper (II) nitrates as precursors for CeO2, Fe2O3 and CuO, and subsequent calcination. Prepared powder catalysts were investigated in the oxidation of dichloromethane on a laboratory apparatus, consisting of a vertical tubular reactor with a fixed bed of catalyst. Catalytic tests were carried out over a temperature range of 100-500 oC in the SV of 71 m3.kgcat-1.h-1, with an initial dichloromethane concentration of 500 ppm and 1.5 vol. % water. Gaseous products were analysed on an online FTIR analyser. The set of prepared powder catalysts showed dichloromethane conversion in the range of 98-100 % and HCl yields ranged from 76-90 %. The TiO2-CeO2-CuO (69:28:3 wt.%) catalyst showed the best catalytic efficiency and HCl selectivity. It was shown that increasing the surface acidity of the catalyst by using titanyl sulphate as a precursor resulted in an increase in catalytic efficiency.

Název v anglickém jazyce

Nanostructured TiO2, Fe2O3, CeO2 and CuO-based catalysts prepared using titanyl sulphate in dichloromethane oxidation

Popis výsledku anglicky

16th Pannonian International Symposium on Catalysis - posterA set of powder catalysts TiO2-CeO2-CuO (69:28:3 wt.%), TiO2-CeO2-Fe2O3 (69:12:19 wt.%) and TiO2-Fe2O3 (71:29 wt.%) was prepared by the co-precipitation method, using titanyl sulphate as a precursor for TiO2 and cerium (III), iron (III) and copper (II) nitrates as precursors for CeO2, Fe2O3 and CuO, and subsequent calcination. Prepared powder catalysts were investigated in the oxidation of dichloromethane on a laboratory apparatus, consisting of a vertical tubular reactor with a fixed bed of catalyst. Catalytic tests were carried out over a temperature range of 100-500 oC in the SV of 71 m3.kgcat-1.h-1, with an initial dichloromethane concentration of 500 ppm and 1.5 vol. % water. Gaseous products were analysed on an online FTIR analyser. The set of prepared powder catalysts showed dichloromethane conversion in the range of 98-100 % and HCl yields ranged from 76-90 %. The TiO2-CeO2-CuO (69:28:3 wt.%) catalyst showed the best catalytic efficiency and HCl selectivity. It was shown that increasing the surface acidity of the catalyst by using titanyl sulphate as a precursor resulted in an increase in catalytic efficiency.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20700 - Environmental engineering

Projekt

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Návaznosti

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Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů