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Catalytic Synthesis of Butyraldehyde Glycol Acetal with H4SiW12O40/MCM-48

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Abstract:

A novel environmental friendly catalyst，H4SiW12O40/MCM-48, was prepared by impregnation method. The catalysts were characterized by means of XRD and FT-IR. The synthesis of butyraldehyde glycol acetal catalyzed by H4SiW12O40/MCM-48 was studied with butyraldehyde and glycol as reactants. H4SiW12O40/MCM-48 was an excellent catalyst for the synthesizing butyraldehyde glycol acetal and Keggin structure of H4SiW12O40 kept unchanged after being impregnated on surface of the molecular sieve support. Effects of n(butyraldehyde)∶n(glycol), catalyst dosage, cyclohexane(water-stripped reagent ) and reaction time on yields of the product were investigated. The optimum conditions had been found, that is, molar ratio of butyraldehyde to glycol is1:1.4，mass ratio of catalyst used to the reactants is 0.4% and reaction time is 45 min. Under these conditions, the yield of butyraldehyde glycol acetal can reach 73.3%.

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Periodical:

Advanced Materials Research (Volume 531)

Pages:

312-315

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.531.312

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Online since:

June 2012

Authors:

Ming Bo Xu, Jie Yang, Yong Kui Huang, Shui Jin Yang

Keywords:

Acetalization, Butyraldehyde Glycol Acetal, Catalysis, MCM-48 Molecular Sieve, Silicotungstic Acid

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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