NDLI: Characterization and Activity of Pd–Ir Catalysts in CO and C$_{3}$H$_{6}$ Oxidation Under Stoichiometric Conditions

Content Provider	Springer Nature Link
Author	Shipitcyna, Anastasiia Kinnunen, Niko M. Hilli, Yulia Suvanto, Mika Pakkanen, Tapani A.
Copyright Year	2016
Abstract	Bimetallic Pd–Ir catalysts based on halogen free precursors supported on alumina and La-stabilized alumina were prepared and characterized. The influence of iridium co-metal loading on activity of supported palladium catalysts in CO and C$_{3}$H$_{6}$ oxidation was studied. In addition, the effect of thermal aging on the catalytic activity was discussed. The powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy combined with energy dispersive X-ray spectroscopy, thermogravimetric analysis were used for characterization of the catalysts. The catalytic activity of prepared catalysts was determined based on conversion of CO and C$_{3}$H$_{6}$ under stoichiometric condition. The activity tests showed that bimetallic catalyst with Pd:Ir molar ratio of 1.00:0.18 on both support materials has the lowest light-off temperature difference between the fresh and aged catalysts in CO and C$_{3}$H$_{6}$ oxidation. However, high Ir loading improved the activity of the catalysts only, if La-stabilized aluminum oxide was used as a support material. Lanthanum oxide promoted the activity of the fresh catalysts in CO and C$_{3}$H$_{6}$ oxidation. Overall, Ir is a promising co-metal candidate for Pd-based catalyst for improving CO and C$_{3}$H$_{6}$ oxidation activity of the catalyst under stoichiometric conditions.
Starting Page	1097
Ending Page	1103
Page Count	7
File Format	PDF
ISSN	10225528
Journal	Topics in Catalysis
Volume Number	59
Issue Number	13-14
e-ISSN	15729028
Language	English
Publisher	Springer US
Publisher Date	2016-06-08
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Pd–Ir catalysts CO C$_{3}$H$_{6}$ TWC Stoichiometric conditions Catalysis Physical Chemistry Pharmacy Industrial Chemistry/Chemical Engineering Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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