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Conversion of 1-tetralone over HY zeolite: An indicator of the extent of hydrogen transfer

Paper ID Volume ID Publish Year Pages File Format Full-Text
41890 45903 2010 7 PDF Available
Title
Conversion of 1-tetralone over HY zeolite: An indicator of the extent of hydrogen transfer
Abstract

The conversion of pure 1-tetralone and its mixtures with n-decane, decalin, tetralin, or 1,5-dimethyl tetralin (DMT) has been investigated over HY zeolite. The dominant reactions undergone by 1-tetralone are the dehydrogenation to 1-naphthol and the subsequent isomerization to 2-naphthol. In the presence of hydrocarbons, the hydrogen transfer/dehydration of naphthols is accelerated, and naphthalene is formed in different amounts, depending on the nature of the co-fed hydrocarbon. In this contribution, it is demonstrated how the product distribution from the tetralone conversion can be used as an indicator of the hydrogen transfer ability of a particular hydrocarbon, or mixture of hydrocarbons. The relative order of hydrogen transfer ability of the various hydrogen donating compounds, as inferred from the naphthalene-to-naphthol product ratio, is DMT > tetralin ≈ decalin > n-decane. This trend agrees well with the hydride dissociation energy of individual donors calculated by DFT.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (50 K)Download as PowerPoint slideResearch highlights▶ Product distribution from tetralone conversion can be used as an indicator of hydrogen transfer ability of hydrocarbons present in FCC. ▶ The higher the rate of hydrogen transfer the higher the naphthalene-to-naphthol product ratio. ▶ Hydrogen transfer ability follows the sequence DMT > tetralin ≈ decalin > n-decane. ▶ This trend agrees with the hydride dissociation energy of individual donors calculated by DFT.

Keywords
Oxygenated aromatics; 1-tetralone; Hydrogen transfer; HY zeolites; FCC
First Page Preview
Conversion of 1-tetralone over HY zeolite: An indicator of the extent of hydrogen transfer
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 389, Issues 1–2, 1 December 2010, Pages 140–146
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis