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Topics in Catalysis
Published in: Topics in Catalysis 1-8/2013

01-05-2013 | Original Paper

Effect of Pt Dispersion on the Catalytic Activity of Supported Pt Catalysts for Diesel Hydrocarbon Oxidation

Authors: Masaaki Haneda, Motoi Sasaki, Hideaki Hamada, Masakuni Ozawa

Published in: Topics in Catalysis | Issue 1-8/2013

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Abstract

The catalytic activity of Pt/Al2O3 for the total oxidation of hydrocarbon mixture of n-decane and 1-methylnaphthalene was strongly dependent on the Pt dispersion. The maximum hydrocarbon oxidation activity was achieved for Pt/Al2O3 with Pt dispersion (DPt) of 0.39. On the other hand, the activity of Pt/ZrO2 monotonously decreased with decreasing Pt dispersion from 1.00 to 0.09. In situ FT-IR spectroscopy suggested that the presence of plural Pt species in metallic state with slight different electric state, which well catalyze the formation of acrylate species as an intermediate, is responsible for the high catalytic activity of Pt/Al2O3 with DPt = 0.39.
previous article Controlling the Sulfur Poisoning of Ag/Al2O3 Catalysts for the Hydrocarbon SCR Reaction by Using a Regenerable SOx Trap
next article Regeneration of Aged Commercial Three-Way Catalysts Using CI-Containing Reagents

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Metadata
Title
Effect of Pt Dispersion on the Catalytic Activity of Supported Pt Catalysts for Diesel Hydrocarbon Oxidation
Authors
Masaaki Haneda
Motoi Sasaki
Hideaki Hamada
Masakuni Ozawa
Publication date
01-05-2013
Publisher
Springer US
Published in
Topics in Catalysis / Issue 1-8/2013
Print ISSN: 1022-5528
Electronic ISSN: 1572-9028
DOI
https://doi.org/10.1007/s11244-013-9962-z

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