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Nanosized sulfated zinc ferrite as catalyst for the synthesis of nopol and other fine chemicals

Paper ID Volume ID Publish Year Pages File Format Full-Text
55192 47043 2012 8 PDF Available
Title
Nanosized sulfated zinc ferrite as catalyst for the synthesis of nopol and other fine chemicals
Abstract

A nanosized highly ordered mesoporous zinc ferrite (ZnFe2O4; ZF) was synthesized via co-precipitation method, further sulfated with ammonium sulfate solution to obtain sulfated ZF (SZF) and have been used for the synthesis of nopol by Prins condensation of β-pinene and paraformaldehyde. The NH3-TPD and pyridine sorption DRIFT-IR studies revealed the significant enhancement in Lewis acidic sites of the zinc ferrite on sulfatation. The influence of various reaction parameters such as reaction temperature, effect of substrate stoichiometry and catalyst loading has been investigated. It gave 70% conversion of β-pinene with 88% selectivity to nopol. The spent catalyst was regenerated and reused successfully up to four cycles with slight loss in catalytic activity. The nanosized SZF catalyst was found to be highly active towards several other commercially important acid catalyzed reactions such as isomerization, acetalization and aldol condensation.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (183 K)Download as PowerPoint slideHighlights► ZnFe2O4 catalyst was synthesized by co-precipitation method. ► Lewis acidity of ZnFe2O4 was observed to increase on sulfatation. ► 70% β-pinene conversion with 88% selectivity to nopol achieved. ► Aldol condensation, isomerization and acetalization reactions were investigated.

Keywords
ZnFe2O4; Sulfated zinc ferrite; Solid acid catalyst; Nopol; Fine chemicals
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Nanosized sulfated zinc ferrite as catalyst for the synthesis of nopol and other fine chemicals
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 198, Issue 1, 30 December 2012, Pages 98–105
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us