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Tungstophosphoric acid supported on titania: A solid acid catalyst in benzylation of phenol with benzylalcohol

Paper ID Volume ID Publish Year Pages File Format Full-Text
53118 46911 2007 7 PDF Available
Title
Tungstophosphoric acid supported on titania: A solid acid catalyst in benzylation of phenol with benzylalcohol
Abstract

Benzylation of phenol with benzylalcohol was carried out in liquid phase over tungstophosphoric acid (TPA) supported on titania. The catalysts were prepared with different TPA (10–25%) loading by wet impregnation method, were calcined at 700 °C and characterized by XRD, surface area, FTIR and acidity of the catalysts was measured by temperature programmed desorption of NH3–TPD, FTIR pyridine adsorption. The catalysts have been represented by a general formula as xPTiO2−y (where x = wt%, P = TPA, and y = calcination temperature in °C). The 20PTiO2 catalyst calcined at various temperatures to know the effect of calcination temperature on activity of the catalyst and the 20PTiO2-700 showed highest activity in benzylation of phenol with benzylalcohol because it had highest acidity. The effects of temperature, catalyst weight, mole ratio of the reactants on conversion of phenol and product selectivities have been optimized. 20PTiO2-700 catalyst gave conversion of benzylalcohol (BA) 98% and the selectivity to benzyl phenol (BP) 83.6%, phenyl benzyl ether (PBE) 9.4%, benzylether (BE) 7% at 130 °C, phenol to benzylalcohol molar ratio 2 and in 1 h.

Keywords
Titania; Heteropolyacid; Tungstophosphoric acid; Benzyl phenol; Phenyl benzyl ether; Benzyl ether; Benzylalcohol
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Tungstophosphoric acid supported on titania: A solid acid catalyst in benzylation of phenol with benzylalcohol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 5, May 2007, Pages 800–806
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