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Effect of SnO2/Al2O3 ratio of Si-based MFI on its acidity and hydrophobicity: Application in selective hydroxyalkylation of p-cresol

Paper ID Volume ID Publish Year Pages File Format Full-Text
50251 46786 2014 6 PDF Available
Title
Effect of SnO2/Al2O3 ratio of Si-based MFI on its acidity and hydrophobicity: Application in selective hydroxyalkylation of p-cresol
Abstract

•Silica based MFI type catalysts with various SnO2/Al2O3 ratios were synthesized.•Al-free Sn-MFI catalyst showed excellent activity and complete product selectivity.•Moderate acidity and hydrophobicity are necessary for highest activity–selectivity.•Al-MFI having hydrophilic character gives lower activity and product selectivity.

Silica based MFI type molecular sieves with various SnO2/Al2O3 ratios were synthesized from gels having molar compositions SiO2:xSnO2:yAl2O3:0.23(TPA)2O:35H2O where 0 ≤ x ≤ 0.02 and 0 ≤ y ≤ 0.01. Recyclable, Al-free Sn-MFI catalyst showed 31% conversion of formaldehyde with 100% selectivity to 2,2′-methylenebis(4-methylphenol) in hydroxyalkylation of p-cresol with formaldehyde on account of moderate acidity and higher hydrophobicity.

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Keywords
Hydroxyalkylation; Stannosilicate; p-Cresol; Molecular sieves; 27Al MAS NMR
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Effect of SnO2/Al2O3 ratio of Si-based MFI on its acidity and hydrophobicity: Application in selective hydroxyalkylation of p-cresol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 44, 10 January 2014, Pages 29–34
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