Monolithic TiO2-CeO2 and Pt/TiO2-CeO2@VUKOPOR®A foams in oxidation of dichloromethane and methanol

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F25%3A10257731" target="_blank" >RIV/61989100:27710/25:10257731 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2213343725017075?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2213343725017075?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jece.2025.117011" target="_blank" >10.1016/j.jece.2025.117011</a>

Result language

angličtina

Original language name

Monolithic TiO2-CeO2 and Pt/TiO2-CeO2@VUKOPOR®A foams in oxidation of dichloromethane and methanol

Original language description

TiO2-CeO2@VUKOPOR®A foam and Pt/TiO2-CeO2@VUKOPOR®A foam were prepared via using a simple reverse micelles-assisted sol-gel method, dip-coating and calcination and were investigated in oxidation of two VOCs - dichloromethane and methanol. In dichloromethane oxidation, Pt/TiO2-CeO2@VUKOPOR®A foam showed improved CO2 selectivity compared to TiO2-CeO2@VUKOPOR®A foam, while their activity and HCl selectivity were comparable. Impregnated PtOx species were responsible for higher reducibility of Pt/TiO2-CeO2@VUKOPOR®A foam leading to higher CO2 yield. In methanol oxidation, Pt/TiO2-CeO2@VUKOPOR®A foam showed improved catalytic activity as well as CO2 selectivity compared to TiO2-CeO2@VUKOPOR®A foam. A weak Lewis acidity and high weak basicity of TiO2-CeO2 support and well-reducible PtOx species in Pt/TiO2-CeO2@VUKOPOR®A foam were responsible for its improved catalytic efficiency. Overall comparison with other reported commercial and laboratory-prepared catalysts revealed that in dichloromethane oxidation the developed Pt/TiO2-CeO2@VUKOPOR®A foam and TiO2-CeO2@VUKOPOR®A foam did not exceed the catalytic activity of alumina-based commercial monolithic and granulated catalysts, but showed satisfactory HCl selectivity (70% at T80). Lower catalytic activity of TiO2-CeO2-based catalytic foams can be attributed to insufficient acidity (missing medium and strong Brönsted acidity) of TiO2-CeO2 support. In methanol oxidation, Pt/TiO2 CeO2@VUKOPOR®A foam as well as TiO2-CeO2@VUKOPOR®A foam showed lower catalytic activity and CO2 selectivity than CuO-containing@VUKOPOR®A foams.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20700 - Environmental engineering

Project

<a href="/en/project/8J25FR017" target="_blank" >8J25FR017: Research of novel sustainable approaches for zeolites and hybrid zeolite-carbon structures synthesis for catalytic and sorption applications</a><br>

Continuities

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

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Environmental Chemical Engineering

ISSN

2213-2929

e-ISSN

2213-3437

Volume of the periodical

13

Issue of the periodical within the volume

May

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

117011

UT code for WoS article

001506095400006

EID of the result in the Scopus database

2-s2.0-105008675746