Ecofriendly Synthesis of Ceria Foam via Carboxymethylcellulose Gelation: Application for the Epoxidation of Chalcone

A simple and innovative process is described for the ecofriendly preparation of ceria foams via carboxymethylcellulose gelation by Ce4+ cations; heat treatment of the ensuing xerogels produces ceria foams. The influence of the concentration of cerium and of the calcination temperature of the xerogel...

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Bibliographic Details
Published inACS sustainable chemistry & engineering Vol. 3; no. 11; pp. 2786 - 2795
Main Authors Ramananarivo, H. R, Maati, H, Amadine, O, Abdelouahdi, K, Barakat, A, Ihiawakrim, D, Ersen, O, Varma, Rajender S, Solhy, A
Format Journal Article
LanguageEnglish
Published American Chemical Society 02.11.2015
Subjects
Chemical and Process Engineering
Engineering Sciences
Epoxidation
Ceria foams
Xerogel
Gelation
Chalcone
Biopolymer
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Summary:A simple and innovative process is described for the ecofriendly preparation of ceria foams via carboxymethylcellulose gelation by Ce4+ cations; heat treatment of the ensuing xerogels produces ceria foams. The influence of the concentration of cerium and of the calcination temperature of the xerogels is studied. Several characterization methods have been used and the obtained results demonstrate that this technique allows the controlled growth of ceria foams. The foamy structure apparently is responsible for UV absorption, and the ceria foam is basic enough to promote the epoxidation of chalcone; comparison of the catalytic activity of the ceria foam versus ceria prepared via a coprecipitation method shows that the ceria foam is most active as it promotes epoxidation of electron-deficient alkenes with dilute aqueous hydrogen peroxide.
ISSN:2168-0485
2168-0485
DOI:10.1021/acssuschemeng.5b00662