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Study on the catalytic conversion of lignin-derived components in pyrolysis vapour using model component

Paper ID Volume ID Publish Year Pages File Format Full-Text
53499 46972 2016 7 PDF Available
Title
Study on the catalytic conversion of lignin-derived components in pyrolysis vapour using model component
Abstract

•Vanillyl alcohol was converted over Na2CO3, γ-Al2O3 and Na2CO3/γ-Al2O3 catalysts.•The degree of de-oxygenation of vanillyl alcohol increased with the increase in number of acid sites in catalysts.•Two pathways have been shown leading to the formation of hydrocarbons from vanillyl alcohol.

Vanillyl alcohol was chosen as a model component for lignin-derived components in bio-oil. The catalytic conversion of vanillyl alcohol over different catalysts was studied and it has been shown that this model component has undergone consecutive reactions to form methoxy phenols, phenols, and eventually hydrocarbons with increasing degree of de-oxygenation. The degree of de-oxygenation of vanillyl alcohol was shown to increase with the increase in number of acid sites in catalysts. γ-Al2O3 material with the highest number of acid sites has resulted in the highest yield of aromatic hydrocarbons, accompanied by the highest yields of coke and gas compared to other materials used in this study. Two pathways have been shown leading to the formation of hydrocarbons from vanillyl alcohol, which are: (i) decomposition of vanillyl alcohol into small olefinic hydrocarbon fragments and the subsequent aromatisation into final products and (ii) direct de-oxygenation of this model component over catalysts.

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Keywords
Lignin; Catalyst; Pyrolysis; Renewable; Model compound
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Study on the catalytic conversion of lignin-derived components in pyrolysis vapour using model component
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 259, Part 2, 1 January 2016, Pages 381–387
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
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