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Synthesis of geminal diacetates (acylals) using heterogeneous H3PW12O40 supported MCM-41 molecular sieves

Paper ID Volume ID Publish Year Pages File Format Full-Text
52217 46867 2008 7 PDF Available
Title
Synthesis of geminal diacetates (acylals) using heterogeneous H3PW12O40 supported MCM-41 molecular sieves
Abstract

Mesoporous Si-MCM-41 and Al-MCM-41 molecular sieves in four Si/Al ratios 25, 50, 75 and 100 were synthesized under hydrothermal condition. 10 wt.%, 15 wt.% and 20 wt.% H3PW12O40 (PW) was supported on Si-MCM-41 and characterized using powder X-ray diffraction (XRD), FT-IR, BET and TEM techniques. Geminal diacetates were synthesized from a variety of aromatic aldehydes including those carrying electron donating or withdrawing substituents in good yields. The relatively non-toxic nature of the catalyst, its ease of handling and its easy availability makes the procedure attractive for eco-friendly organic synthesis. 20 wt.% PW/MCM-41 was found to be more active than other catalyst used and have similar activity as that of unsupported heteropoly acids (HPAs).

Keywords
1,1-Diacetates; Aldehydes; Al-MCM-41; Hydrophobic; PW/MCM-41
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Synthesis of geminal diacetates (acylals) using heterogeneous H3PW12O40 supported MCM-41 molecular sieves
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 5, 20 March 2008, Pages 577–583
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