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Sulfated zirconia; an efficient and reusable acid catalyst for the selective synthesis of 4-phenyl-1,3-dioxane by Prins cyclization of styrene

Paper ID Volume ID Publish Year Pages File Format Full-Text
40553 45858 2013 8 PDF Available
Title
Sulfated zirconia; an efficient and reusable acid catalyst for the selective synthesis of 4-phenyl-1,3-dioxane by Prins cyclization of styrene
Abstract

Prins cyclization of styrene with paraformaldehyde was carried out over sulfated zirconia (SZ) catalyst in liquid phase. The SZ catalysts were synthesized by precipitation method with different sulfur impregnation and characterized by XRD, FT-IR, Nitrogen sorption, NH3-TPD. The SZ showed best performance among different types of acid catalysts. The acidity of SZ optimized by different concentrations of H2SO4 treatment influences the selectivity for dioxane. The sulfur loading, nature of solvent, temperature, catalyst amount, mole ratio and reusability of catalyst were investigated. The SZ catalyst synthesized by impregnating 2N sulfuric acid was found to be highly selective for the synthesis of 4-phenyl-1,3-dioxane (93%) with almost complete conversion of styrene (∼100%). The catalyst was recycled thrice with negligible decrease in the yield of 4-phenyl-1,3-dioxane.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (173 K)Download as PowerPoint slideHighlights► Sulfated zirconia is an efficient catalyst for Prins cyclization of styrene with paraformaldehyde. ► Influence of sulfur content and acidity of sulfated zirconia catalyst on activity and selectivity. ► The efficiency of catalyst for Prins cyclization of different alkenes with paraformaldehyde. ► Understanding the solvent effect in terms of dielectric constant, acceptor and donor numbers.

Keywords
Prins cyclization; Sulfated zirconia; Styrene; Paraformaldehyde; 1,3-Dioxane
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Sulfated zirconia; an efficient and reusable acid catalyst for the selective synthesis of 4-phenyl-1,3-dioxane by Prins cyclization of styrene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 451, 31 January 2013, Pages 71–78
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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