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Mesoporous carbon nitride synthesized by nanocasting with urea/formaldehyde and metal-free catalytic oxidation of cyclic olefins

Paper ID Volume ID Publish Year Pages File Format Full-Text
54903 47030 2013 8 PDF Available
Title
Mesoporous carbon nitride synthesized by nanocasting with urea/formaldehyde and metal-free catalytic oxidation of cyclic olefins
Abstract

Mesostructured carbon nitride has been synthesized by nanocasting method with urea/formaldehyde as carbon and nitrogen sources by using disk-shaped 2D hexagonal mesoporous silica (INC-2) as a hard template. The resulted mesoporous carbon nitride (UF-MCN) was characterized as a graphitic structure with hexagonal pores of 3–4 nm and short channels in the submicron range. The catalytic oxidation ability of UF-MCN was demonstrated in the metal-free oxidation of cyclic olefins with hydrogen peroxide. The conversions for cyclopentene, cyclohexene and cis-cyclooctene were obtained in the range of 65–80% and selectivities onto epoxides were 40–90%, respectively. The UF-MCN could illustrate the considerable catalytic oxidation activities due to the existence of surface oxygen species.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (156 K)Download as PowerPoint slideHighlights► UF-MCNs (urea–formaldehyde mesoporous carbon nitrides) were synthesized by nanocasting of urea/formaldehyde as N, C source over INC-2 as hard template. ► The obtained disk shaped UF-MCN was replica of INC-2. ► The existences of surface oxygen species were confirmed by XPS measurements which are presumed to be catalytic active sites for oxidation. ► The UF-MCN-1.0 showed catalytic performance in oxidation of cyclic olefins with 80% conversion of cyclooctene and 92% selectivity of cyclooctene oxide.

Keywords
Mesoporous carbon nitride; Urea–formaldehyde resin; Oxidation; Cyclic olefins
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Mesoporous carbon nitride synthesized by nanocasting with urea/formaldehyde and metal-free catalytic oxidation of cyclic olefins
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 204, 15 April 2013, Pages 156–163
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Price after discount Only $4.95
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