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Characterization and regeneration of Pt-catalysts deactivated in municipal waste flue gas

Paper ID Volume ID Publish Year Pages File Format Full-Text
48735 46520 2006 7 PDF Available
Title
Characterization and regeneration of Pt-catalysts deactivated in municipal waste flue gas
Abstract

Severe deactivation was observed for industrially aged catalysts used in waste incineration plants and tested in lab-scale. Possible compounds that cause deactivation of these Pt-based CO oxidation catalysts have been studied. Kinetic observations of industrial and model catalysts showed that siloxanes were the most severe catalyst poisons, although acidic sulfur compounds also caused deactivation. Furthermore, a method for on-site regeneration without shutdown of the catalytic flue gas cleaning system has been developed, i.e. an addition of H2/N2 gas to the off-gas can completely restore the activity of the deactivated catalysts.

Keywords
Platinum; CO oxidation; Poisoning; IR spectroscopy; Regeneration; Hexamethyldisiloxane; Catalytic oxidation; Hydrogen
First Page Preview
Characterization and regeneration of Pt-catalysts deactivated in municipal waste flue gas
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 69, Issues 1–2, 1 December 2006, Pages 10–16
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis