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

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 perfor...

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Podrobná bibliografia
Vydané v:	Applied catalysis. A, General Ročník 451; s. 71 - 78
Hlavní autori:	Marakatti, Vijaykumar S., Shanbhag, Ganapati V., Halgeri, A.B.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Kidlington Elsevier 31.01.2013
Predmet:	Catalysis Catalysts Chemistry Exact sciences and technology General and physical chemistry Reusable Solvents Sorption Styrenes Sulfur Surface physical chemistry Synthesis Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Zirconium dioxide Paraformaldehyde Binary compound Selectivity Liquid phase Sulfuric acid Precipitation Synthesis Sulfur Sulfated zirconia Dioxane Hydrocarbon Transition element compounds Acidity Nitrogen Conversion X ray diffraction Sorption Infrared spectrometry Zirconia 1,3-Dioxane Ammonia Heterogeneous catalysis Impregnation Acids Adsorption Cyclization Styrene Benzenic compound Reusable catalyst Prins cyclization
ISSN:	0926-860X
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Popis
Shrnutí:	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 ( similar to 100%). The catalyst was recycled thrice with negligible decrease in the yield of 4-phenyl-1,3-dioxane.
Bibliografia:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0926-860X
DOI:	10.1016/j.apcata.2012.11.016