Functionalization of hexagonal mesoporous silicas (HMS) for the synthesis of efficient catalyst and investigation of its catalytic activity in the synthesis of 1-amidoalkyl-2-naphthols and 2-substituted benzimidazoles

In this paper, we describe the preparation of novel heterogeneous solid acid catalyst by immobilization of sulfuric acid on functionalized hexagonal mesoporous silica. This catalyst was successfully synthesized and characterized using FT-IR, SEM, EDS, TGA, XRD, and BET techniques. The catalytic acti...

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Bibliographic Details
Published in:Reaction kinetics, mechanisms and catalysis mechanisms and catalysis, 2019-12, Vol.128 (2), p.867-884
Main Authors: Gholamian, Fatemeh, Hajjami, Maryam
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Physical Chemistry
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Summary:In this paper, we describe the preparation of novel heterogeneous solid acid catalyst by immobilization of sulfuric acid on functionalized hexagonal mesoporous silica. This catalyst was successfully synthesized and characterized using FT-IR, SEM, EDS, TGA, XRD, and BET techniques. The catalytic activity of 5-oxo-1-(3-(triethoxysilyl)propyl)pyrrolidine-3-carboxylic sulfuric anhydride immobilized on HMS (HMS/APTES-IA-SO 3 H) was studied for the one-pot synthesis of 1-amidoalkyl-2-naphthols and 2-substituted benzimidazoles. The synthesized catalyst could be easily recovered from the reaction mixture and reused.
ISSN:1878-5190
1878-5204
DOI:10.1007/s11144-019-01663-0