NDLI: Synthesis of macro-mesoporous Pt/alumina catalyst to enhance catalytic activity of hydrogen oxidation

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Synthesis of macro-mesoporous Pt/alumina catalyst to enhance catalytic activity of hydrogen oxidation

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Electronic Materials Letters : Volume 8, Issue 1, February 2012

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Synthesis of macro-mesoporous Pt/alumina catalyst to enhance catalytic activity of hydrogen oxidation

Content Provider	SpringerLink
Author	Choi, Yo Min Lee, Young In Kim, Seil Myung, Nosang V. Choa, Yong Ho
Copyright Year	2012
Abstract	Macro-mesoporous Pt/alumina catalysts were synthesized by the sol-gel process with the assistance of a PS colloidal crystal template to improve the catalytic activity of hydrogen oxidation. Macropores in catalysts improve hydrogen gas diffusion and enhance the accessibility of hydrogen gas to the center of the catalyst. The diffusion coefficients of hydrogen gas in macro- and mesopores were theoretically calculated. The effect of macropores on exothermic properties induced by hydrogen oxidation was investigated using various concentrations of H$_{2}$/air gas mixture. The temperature increase of macro-mesoporous Pt/alumina was dramatically higher than that of mesoporous Pt/alumina without macropores. The results clearly show that macropores effectively improve the catalytic reaction of hydrogen oxidation.
Starting Page	225
Ending Page	230
Page Count	6
File Format	PDF
ISSN	17388090
Journal	Electronic Materials Letters
Volume Number	8
Issue Number	2
e-ISSN	20936788
Language	English
Publisher	The Korean Institute of Metals and Materials
Publisher Date	2012-04-15
Publisher Place	Springer
Access Restriction	Subscribed
Subject Keyword	platinum alumina macropore mesopore hydrogen sol-gel polystyrene bead Optical and Electronic Materials Condensed Matter Physics Nanotechnology and Microengineering Characterization and Evaluation of Materials Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials

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