Platinum-Based Catalyst for Diesel Hydrocarbon Oxidation

doi:10.1016/S1872-2067(10)60192-1

催化学报 ›› 2011, Vol. 32 ›› Issue (5): 777-781.DOI: 10.1016/S1872-2067(10)60192-1

Platinum-Based Catalyst for Diesel Hydrocarbon Oxidation

Masaaki HANEDA1,*, Motoi SASAKI 2, Hideaki HAMADA2, Masakuni OZAWA1

1Ceramics Research Laboratory, Nagoya Institute of Technology, 10-6-29 Asahigaoka, Tajimi, Gifu 507-0071, Japan; 2Research Center for New Fuels and Vehicle Technology, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan

收稿日期:2010-11-09 修回日期:2010-12-16 出版日期:2011-05-31 发布日期:2014-09-29

Platinum-Based Catalyst for Diesel Hydrocarbon Oxidation

Masaaki HANEDA1,*, Motoi SASAKI 2, Hideaki HAMADA2, Masakuni OZAWA1

1Ceramics Research Laboratory, Nagoya Institute of Technology, 10-6-29 Asahigaoka, Tajimi, Gifu 507-0071, Japan; 2Research Center for New Fuels and Vehicle Technology, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan

Received:2010-11-09 Revised:2010-12-16 Online:2011-05-31 Published:2014-09-29

摘要/Abstract

摘要： The catalytic performance of Pt-based catalysts for the total oxidation of hydrocarbons was investigated. The activity of supported Pt catalysts (Pt/Al₂O₃, Pt/ZrO₂, Pt/TiO₂, and Pt/H-ZSM-5) depends on the metal oxide support. Pt/Al₂O₃ showed the highest catalytic activity when the catalysts were aged at 750 °C for 50 h in air. The activity of Pt/Al₂O₃ was dependent on the valence state of the Pt surface. Pt/Al₂O₃ with the Pt surface in the metallic state was more active than with the surface in the cationic state. The surface density of acid and basic sites on the Al₂O₃ support controlled the valence state of the Pt surface and stability of the Pt particles in the highly dispersed state, respectively.

关键词: diesel oxidation catalyst, platinum, alumina, valence state of platinum surface, surface acid-base property

Abstract: The catalytic performance of Pt-based catalysts for the total oxidation of hydrocarbons was investigated. The activity of supported Pt catalysts (Pt/Al₂O₃, Pt/ZrO₂, Pt/TiO₂, and Pt/H-ZSM-5) depends on the metal oxide support. Pt/Al₂O₃ showed the highest catalytic activity when the catalysts were aged at 750 °C for 50 h in air. The activity of Pt/Al₂O₃ was dependent on the valence state of the Pt surface. Pt/Al₂O₃ with the Pt surface in the metallic state was more active than with the surface in the cationic state. The surface density of acid and basic sites on the Al₂O₃ support controlled the valence state of the Pt surface and stability of the Pt particles in the highly dispersed state, respectively.

Key words: diesel oxidation catalyst, platinum, alumina, valence state of platinum surface, surface acid-base property

Masaaki HANEDA, Motoi SASAKI, Hideaki HAMADA, Masakuni OZAWA. Platinum-Based Catalyst for Diesel Hydrocarbon Oxidation[J]. 催化学报, 2011, 32(5): 777-781.

Masaaki HANEDA, Motoi SASAKI, Hideaki HAMADA, Masakuni OZAWA. Platinum-Based Catalyst for Diesel Hydrocarbon Oxidation[J]. Chinese Journal of Catalysis, 2011, 32(5): 777-781.

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Platinum-Based Catalyst for Diesel Hydrocarbon Oxidation

Platinum-Based Catalyst for Diesel Hydrocarbon Oxidation

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