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Host (nanocavity of dealuminated zeolite Y)–guest (12-molybdophosphoric acid) nanocomposite material: An efficient and reusable catalyst for oximation of aldehydes

Paper ID Volume ID Publish Year Pages File Format Full-Text
43128 45956 2009 7 PDF Available
Title
Host (nanocavity of dealuminated zeolite Y)–guest (12-molybdophosphoric acid) nanocomposite material: An efficient and reusable catalyst for oximation of aldehydes
Abstract

12-Molybdophosphoric acid (MPA) encapsulated in the supercage of dealuminated zeolite Y (DAZY) was prepared and characterized by infrared spectroscopy (FT-IR), X-ray diffraction (XRD), differential thermal gravimetry (DTG) and atomic absorption spectroscopy (AAS) techniques. The amount of MPA in the supercage of zeolite was 0.0875 g/g of supported catalyst. This catalyst was used for efficient oximation of aldehydes under mechanical stirring, ultrasonic irradiation and solvent-free conditions and the corresponding products were obtained in 65–100% yields. The reaction times were 25–250 min for system under agitation with magnetic stirring, while under ultrasonic irradiation or solvent-free conditions, the oxime yields were increased and the reaction times decreased. The zeolite Y encapsulated 12-molybdophosphoric acid (MPA-DAZY) catalyst was reused several times without loss of its catalytic activity. The amount of Mo leached was less than 2.9%.

Graphical abstractManganes (III) 5,10,15,20-tetrakis(4-N-methylpyridyl) porphyrin encapsulated into zeolite X, and zeolite Y, were synthesized and used as catalysts for epoxidation of cyclic and linear alkenes with NaIO4 under mechanical stirring and ultrasonic irradiation. These catalysts were also used for epoxidation of linear alkenes and good shape selectivity was observed.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
12-Molybdophosphoric acid; Dealuminated zeolite Y; Aldoxime; Aldehyde; Reusable catalyst
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Host (nanocavity of dealuminated zeolite Y)–guest (12-molybdophosphoric acid) nanocomposite material: An efficient and reusable catalyst for oximation of aldehydes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 358, Issue 2, 1 May 2009, Pages 157–163
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