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Journal of Materials Science
Erschienen in: Journal of Materials Science 1/2018

06.09.2017 | Chemical routes to materials

Facile preparation of Mg-doped graphitic carbon nitride composites as a solid base catalyst for Knoevenagel condensations

verfasst von: Qingfang Deng, Qingna Li

Erschienen in: Journal of Materials Science | Ausgabe 1/2018

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Abstract

Mg-doped graphitic carbon nitride (g-C3N4) composites were prepared using a facile thermal polymerization process under air atmosphere. The obtained materials can be employed as the solid base catalysts in Knoevenagel condensation reactions. The Mg-doped g-C3N4 composites show excellent performance as a solid catalyst and superior catalytic activity compared to the pure CN-U. The introduction of Mg species improved the overall basic property of CN-U, favoring Knoevenagel condensations. The 5MgCN-U catalyst exhibited high benzaldehyde conversion of 97.4% at 70 °C and good cycling stability for four cycles, with 87.7% benzaldehyde conversion and nearly 100% benzylidene malononitrile selectivity. Additionally, the Mg-doped g-C3N4 composites from urea showed superior catalytic performance than those produced from dicyandiamide and melamine, indicating that the precursors contribute to the efficiency of Knoevenagel condensation reactions.
Vorheriger Artikel Formation of organometallic microstructures via self-assembling of carboxylated zinc phthalocyanines with selective adsorption and visible light-driven photodegradation of cationic dyes
Nächster Artikel Facile preparation of a smart membrane with ammonia-responsive wettability transition for controllable oil/water separation

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Metadaten
Titel
Facile preparation of Mg-doped graphitic carbon nitride composites as a solid base catalyst for Knoevenagel condensations
verfasst von
Qingfang Deng
Qingna Li
Publikationsdatum
06.09.2017
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 1/2018
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-017-1534-3

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