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Suitable acidity of ZSM-5 for the isomerization of styrene oxide to phenylacetaldehyde

Paper ID Volume ID Publish Year Pages File Format Full-Text
49446 46745 2014 5 PDF Available
Title
Suitable acidity of ZSM-5 for the isomerization of styrene oxide to phenylacetaldehyde
Abstract

•The catalyst lifetimes are affected by both acid strength and concentration.•Trimerization of phenylacetaldehyde occurs at the external acid sites.•Aldol condensation of phenylacetaldehyde is not sensitive to the acidity.•High Si/Al HZSM-5 without external acid sites is more suitable for this reaction.

The effect of acidity of HZSM-5 (SiO2/Al2O3 = 25–360) on isomerization of styrene oxide to phenylacetaldehyde was investigated under gas–phase free of solvents. The reaction was mainly catalyzed by the strong acid sites of HZSM-5 and catalyst lifetimes were affected by both acid strength and concentration. Trimerization of phenylacetaldehyde occurred at external acid sites, leading to a sharp decline in product selectivity. High Si/Al HZSM-5 (e.g., SiO2/Al2O3 = 360), which contains weaker acid sites inside pores and trace amount of external acid sites, was found to be more effective with a higher stability and phenylacetaldehyde yield up to 95%.

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Keywords
AWMVMTVKBNGEAK-UHFFFAOYSA-N; DTUQWGWMVIHBKE-UHFFFAOYSA-N; AXZDPAXJQHIRTE-VBKFSLOCSA-N; ZHTQEDBVQSVWEN-UHFFFAOYSA-NZSM-5; Acidity; Isomerization; Styrene oxide; Phenylacetaldehyde
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Suitable acidity of ZSM-5 for the isomerization of styrene oxide to phenylacetaldehyde
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 56, 5 November 2014, Pages 143–147
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
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Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us