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New composite materials as support for selective hydrogenation; egg-shell catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
41537 45892 2010 9 PDF Available
Title
New composite materials as support for selective hydrogenation; egg-shell catalysts
Abstract

It has been demonstrated that using low-cost materials and a relatively simple process, complex supports with a mixed inorganic–organic structure can be synthesized. These supports combine hydrophilic–hydrophobic dual properties and are especially suited for preparing egg-shell supported metal catalysts to be used in highly exothermal catalytic reactions or in systems of consecutive reactions where diffusive problems decrease the selectivity. The synthesized supports have an extremely thin active layer. They also proved to be more mechanically resistant than other commercial supports thus being amenable for use in continuous processes with long packed beds. Pd catalysts supported over the new composite materials were found to be highly active for the selective hydrogenation of styrene, a representative compound of pyrolisis gasolines. They also displayed smaller diffusive constraints than other Pd catalysts prepared from commercial supports.

Graphical abstractGraphical description of the procedure impregnation of the new composite supports to obtain Pd egg-shell catalyst.Figure optionsDownload full-size imageDownload high-quality image (127 K)Download as PowerPoint slideResearch highlights▶ New Composites Supports were developed to obtain egg-shell catalysts. ▶ Composites Supports combine hydrophilic-hydrophobic dual properties. ▶ Composite Supports have higher mechanical resistance than commercial supports. ▶ Synthesized egg-shell catalysts with Composites Supports have a thin active layer. ▶ Pd-Composite are more active than Pd-commercial in pelletized supports form.

Keywords
Heterogeneous catalysis; Palladium; Egg-shell catalysts; Composite materials
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New composite materials as support for selective hydrogenation; egg-shell catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 390, Issues 1–2, 20 December 2010, Pages 166–174
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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
Online Support
Any Questions? feel free to contact us