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Catalytic features of Rh and Ni supported catalysts in the steam reforming of glycerol to produce hydrogen

Paper ID Volume ID Publish Year Pages File Format Full-Text
42021 45908 2010 7 PDF Available
Title
Catalytic features of Rh and Ni supported catalysts in the steam reforming of glycerol to produce hydrogen
Abstract

Glycerol steam reforming on Rh and Ni supported catalyst was investigate in view to produce syn-gas to feed a high temperature fuel cell system (SOFC-MCFC). Results obtained revealed that glycerol is subjected to pyrolysis phenomena and at temperature higher than 720 K drastically decomposes before to reach the catalyst surface. Rh/Al2O3 catalyst resulted to be more active and stable than Ni supported catalysts but independently from the catalyst used (Rh or Ni) and temperature investigated, the reaction is affected by coke formation mainly promoted by the large presence of olefins formed by glycerol thermal decomposition. Even if for thermodynamic reasons the hydrogen production should be favored by operating at high temperature, results obtained demonstrate that it is more convenient to operate at temperature not higher than 923 K, since higher reaction temperature promotes the formation of encapsulated carbon which negatively reflects on catalyst stability.

Graphical abstractGlycerol steam reforming on Rh and Ni supported catalyst was investigate in view to produce syn-gas to feed a high temperature fuel cell system. Rh/Al2O3 catalyst resulted to be more active and stable than Ni catalysts but independently from the experimental conditions investigated, the reaction is affected by coke formation mainly promoted by the large presence of olefins formed by glycerol decomposition.Figure optionsDownload full-size imageDownload high-quality image (53 K)Download as PowerPoint slide

Keywords
Rh and Ni catalysts; H2 production; Glycerol steam reforming; Coke formation
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Catalytic features of Rh and Ni supported catalysts in the steam reforming of glycerol to produce hydrogen
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 381, Issues 1–2, 15 June 2010, Pages 1–7
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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