Silica supported Schiff-based palladium nanocatalyst for n-alkylation at room temperature

Shaheen M. Sarkar and Md. Lutfor Rahman and Kamrul Hasan and Md. Maksudur Rahman Khan and Mohammed Salim Akhter and Emmet J. O’Reilly (2024) Silica supported Schiff-based palladium nanocatalyst for n-alkylation at room temperature. Journal of Saudi Chemical Society, 28. pp. 1-9. ISSN 1319-6103

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Abstract

This works documents a new silica gel-supported nanocatalyst (Si@NSBPdNPs 3) with low Pd loadings for nalkylation reactions at room temperature. Post synthesis characterisation using SEM-EDX and ICP techniques provided a quantitative assessment of palladium species. Additionally, TEM analysis unveiled an average palladium nanoparticle size of 5.87 ± 0.2 nm. In-depth X-ray Photoelectron Spectroscopy (XPS) analysis revealed its predominant composition as Pd(0) complexed to a Schiff base ligand on low cost silica matrix. The nanocatalyst exhibited high efficacy in the catalysis of n-alkylation (Michael addition) reactions with various α,β-unsaturated Michael acceptors, yielding the corresponding n-alkyl products at room temperature with exceptional yields. Notably, the catalyst exhibited good stability and could be easily separated from the reaction mixture. Moreover, the catalyst displayed recyclability potential, maintaining its original catalytic efficacy for up to seven cycles without any discernible loss.

Item Type:	Article
Keyword:	Amine, aza-Michael addition, Si@NSBPdNPs 3, Heterogeneous catalyst, Schiff-base
Subjects:	Q Science > Q Science (General) > Q1-390 Science (General) T Technology > T Technology (General) > T1-995 Technology (General)
Department:	FACULTY > Faculty of Science and Natural Resources
Depositing User:	SITI AZIZAH BINTI IDRIS -
Date Deposited:	18 Nov 2024 11:20
Last Modified:	18 Nov 2024 11:20
URI:	https://eprints.ums.edu.my/id/eprint/41940

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