Ceramic foams with TiO2 -CeO2 , TiO2 -CuO and TiO2 -CeO2 -CuO catalysts in oxidation of model volatile organic compounds

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F22%3A10250979" target="_blank" >RIV/61989100:27710/22:10250979 - isvavai.cz</a>

Result on the web

<a href="https://pannonian2020.umcs.eu/" target="_blank" >https://pannonian2020.umcs.eu/</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Ceramic foams with TiO2 -CeO2 , TiO2 -CuO and TiO2 -CeO2 -CuO catalysts in oxidation of model volatile organic compounds

Original language description

Dichloromethane and methanol are among the widely used solvents in the pharmaceutical industry, the production of synthetic polymer precursors or in analytical practice. Used, at the output of technological operations, represent a significant amount of hazardous and toxic liquid waste that must be disposed ecologically. Economically and ecologically acceptable way of their disposal is their catalytic oxidation.The work deals with the study of monolithic catalysts based on TiO2-CeO2-CuO [1, 2], TiO2-CeO2 and TiO2-CuO fixed on ceramic Vakupor foams in oxidation of dichloromethane and methanol. Oxide mixtures were prepared by sol-gel method and deposited on foams by dip-coating and calcination. Catalytic experiments were carried out on a laboratory apparatus consisting of a flow-through tube reactor with a fixed catalyst bed located in the furnace, equipped with a by-passport, injection of dichloromethane (500 ppm) and water (1.5 vol.%) or methanol (500 ppm) and an online FTIR analyzer. The activity and selectivity of monolithic catalysts in oxidation of dichloromethane were studied in the temperature range of 100MINUS SIGN 500oC, in oxidation of methanol at 45MINUS SIGN 500oC, at the SV of 11 300 h-1. The durability of the best monolithic catalyst was studied as well.The catalysts studied are suitable for oxidation of methanol, not for oxidation of dichloromethane. In methanol oxidation, TiO2-CeO2-CuO and TiO2-CuO catalysts showed the highest and comparable catalytic activity and selectivity. In oxidation of dichloromethane, the highest activity and selectivity to HCl was shown by the TiO2-CeO2 catalyst, which, however, showed low selectivity to CO2.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

20700 - Environmental engineering

Project

<a href="/en/project/EF17_049%2F0008419" target="_blank" >EF17_049/0008419: Support of cross-sectoral cooperation in the field of environmental pollutants reduction and waste recovery</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

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