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Synthesis of nopol via Prins condensation of β-pinene and paraformaldehyde catalyzed by sulfated zirconia

Paper ID Volume ID Publish Year Pages File Format Full-Text
41536 45892 2010 8 PDF Available
Title
Synthesis of nopol via Prins condensation of β-pinene and paraformaldehyde catalyzed by sulfated zirconia
Abstract

The present work describes the novel application of sulfated zirconia (SZ) solid acid catalysts for the synthesis of nopol via Prins condensation of β-pinene and paraformaldehyde. SZ catalysts with different percentages of sulfur loadings have been synthesized and characterized using various physico-chemical techniques like PXRD, FT-IR, surface area analysis and NH3–TPD studies. The influences of various reaction parameters such as sulfur loading, reaction temperature, molar ratio of reactants, reaction time, solvent effect and reusability of the catalyst have been investigated. SZ catalyst synthesized by impregnation of 2N sulfuric acid solution over Zr(OH)4 was found to be a highly selective catalyst for β-pinene conversion (>99%) with ∼99% selectivity to nopol. The catalyst could be reused up to five cycles with minor loss in catalytic activity for β-pinene conversion, while the nopol selectivity remains unaffected.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (17 K)Download as PowerPoint slideResearch highlights▶ Application of sulfated zirconia as an efficient solid acid catalyst. ▶ Synthesis of nopol via Prins condensation of β-pinene and paraformaldehyde. ▶ SZ-2NCalcn catalyst resulted in 99% conversion of β-pinene with ∼99% selectivity. ▶ Catalyst can be recycled with little loss in activity up to five cycles.

Keywords
Solid acid; Sulfated zirconia; Prins condensation; β-pinene; Paraformaldehyde; Nopol
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Synthesis of nopol via Prins condensation of β-pinene and paraformaldehyde catalyzed by sulfated zirconia
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 390, Issues 1–2, 20 December 2010, Pages 158–165
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us