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Is 1-hexene epoxidation in TS-1 diffusion limited in different solvents?

Paper ID Volume ID Publish Year Pages File Format Full-Text
53133 46915 2006 5 PDF Available
Title
Is 1-hexene epoxidation in TS-1 diffusion limited in different solvents?
Abstract

PFG NMR diffusion measurements were carried out to determine the effect of solvent on intracrystalline reactant diffusivities and on 1-hexene epoxidation rates in TS-1 catalyst. Using n-hexane in silicalite as a mimic for the TS-1 system, the self-diffusivity of n-hexane in silicalite was found to be 24% higher in methanol solvent than in acetonitrile solvent and 45% higher than in acetone solvent. The presence of trace Al did not affect n-hexane diffusivity. Based on analysis of the Weisz modulus for a slab morphology, the 1-hexene epoxidation reaction in TS-1 was found to be diffusion limited only if the crystal size is at least 38 μm in the methanol system.

Keywords
PFG NMR; n-Hexane diffusivity; 1-Hexene epoxidation in TS-1; Silicalite; Multicomponent diffusion in silicalite
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Is 1-hexene epoxidation in TS-1 diffusion limited in different solvents?
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 7, Issue 12, December 2006, Pages 936–940
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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