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Dehydration of 5-amino-1-pentanol over rare earth oxides

Paper ID Volume ID Publish Year Pages File Format Full-Text
39093 45806 2016 8 PDF Available
Title
Dehydration of 5-amino-1-pentanol over rare earth oxides
Abstract

•Vapor-phase catalytic dehydration of 5-amino-1-pentanol was investigated.•Rare earth oxides catalyzed the conversion of 5-amino-1-pentanol into 4-penten-1-amine.•Tm2O3, Yb2O3, and Lu2O3 showed high conversion and high selectivity to 4-penten-1-amine.•Yb2O3 calcined at 800 °C performed high formation rate of 4-penten-1-amine.•The selectivity to 4-penten-1-amine exceeded 90% in H2 flow over Yb2O3 at 425 °C.

Vapor-phase catalytic dehydration of 5-amino-1-pentanol was investigated over various oxide catalysts including rare earth oxides (REOs). Over ordinary acidic oxides such as Al2O3, SiO2, SiO2-Al2O3, TiO2, and ZrO2, a cyclic amine such as piperidine was mainly produced at temperatures of 300 °C and higher. In contrast, basic REOs with a cubic bixbyite structure showed the catalytic activity in the conversion of 5-amino-1-pentanol to produce 4-penten-1-amine at 425 °C. In REO catalysts, Tm2O3, Yb2O3, and Lu2O3 showed the high conversion of 5-amino-1-pentanol and the high selectivity to 4-penten-1-amine. Especially, Yb2O3 calcined at 800 °C showed a high formation rate of 4-penten-1-amine with the selectivity of ca. 90% at 425 °C. In comparing the reactivity of several amino alcohols to form the corresponding unsaturated amines, Yb2O3 effectively catalyzed the dehydration of 6-amino-1-hexanol into 5-hexen-1-amine, whereas 3-amino-1-propanol and 4-amino-1-butanol were not effectively dehydrated due to the decomposition of the reactant.

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Keywords
Catalytic dehydration; Amino alcohol; Unsaturated amine; Rare earth metal oxides
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Dehydration of 5-amino-1-pentanol over rare earth oxides
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 517, 5 May 2016, Pages 73–80
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
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