Synergic effect of nano-catalyst and continuous flow system: Dakin–West reaction catalyzed by Nafion-H@SPIONs in a microreactor

The expansion of practical processes for superferromagnetic nanocatalysts is a very attractive subject. In this work, we successfully developed a new and efficient procedure with combination of continuous flow technology with immobilizing of only 0.35 mol% of Nafion-H on silica-encapsulated supperpa...

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Published inRSC advances Vol. 5; no. 26; pp. 20132 - 20137
Main Authors Narei, Zahra Arabloo, Shafiee, Behnaz, Khosropour, Ahmad R.
Format Journal Article
LanguageEnglish
Published 01.01.2015
Subjects
catalysts
catalytic activity
iron oxides
ketones
magnetic fields
nanoparticles
synergism
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Summary:The expansion of practical processes for superferromagnetic nanocatalysts is a very attractive subject. In this work, we successfully developed a new and efficient procedure with combination of continuous flow technology with immobilizing of only 0.35 mol% of Nafion-H on silica-encapsulated supperparamagnetic iron oxide nanoparticles (SPIONs) to maximize catalyst efficiency for the synthesis of β-acetamido ketones. The turnover frequency value varies in the range of 1336 to 1577 h −1 compared to 256–515 h −1 in the conventional stirred reactor. Moreover, the catalyst could be quickly recovered by external magnetic field and could be reused for several reaction cycles without any change in its catalytic activity.
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ISSN:2046-2069
2046-2069
DOI:10.1039/C4RA15466E