Oxidation of methane over Pt and Pd supported on alumina in lean-burn natural-gas engine exhaust

被引：88

作者：

Yamamoto, H ^{[1
]}

Uchida, H ^{[1
]}

机构：

[1] Tokyo Gas Co Ltd, Fundamental Technol Res Lab, Minato Ku, Tokyo 105, Japan

来源：

CATALYSIS TODAY | 1998年 / 45卷 / 1-4期

关键词：

Pt/Pd-alumina; methane oxidation; natural gas engine exhaust; lean burn; durability; sintering;

D O I：

10.1016/S0920-5861(98)00265-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Catalytic oxidation of hydrocarbons in lean-burn natural-gas engine exhaust has been studied for Pt and Pd supported on alumina. A Pt-Pd/alumina catalyst exhibited higher and longer-lasting hydrocarbon oxidation activity than Pt-Rh/alumina, Pt/ alumina, and Pd/alumina catalysts. Increasing the palladium content in Pt-Pd/alumina catalyst increased the oxidation activity and had more durability. While increasing the platinum content a little bit also improved the activity, adding much more did not. Supporting the platinum on alumina retarded the sintering of Pd and PdO, thus lengthening the oxidation activity of the Pt-Pd/alumina catalyst. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：147 / 151

页数：5

共 11 条

[1]

BURCH R, 1995, P 1 WORLD C ENV CAT, P159

[2] STRUCTURE SENSITIVITY OF METHANE OXIDATION OVER PLATINUM AND PALLADIUM [J].

HICKS, RF ;

QI, HH ;

YOUNG, ML ;

LEE, RG .

JOURNAL OF CATALYSIS, 1990, 122 (02) :280-294

[3]

Lampert J.K., 1996, 961971 SAE

[4] Palladium catalyst performance for methane emissions abatement from lean burn natural gas vehicles [J].

Lampert, JK ;

Kazi, MS ;

Farrauto, RJ .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1997, 14 (3-4) :211-223

[5]

LAMPERT JK, 1995, P 1 WORLD C ENV CAT, P69

[6]

MCCORMICK RL, 1996, 961976 SAE

[7] METHANE OXIDATION OVER ALUMINA-SUPPORTED NOBLE-METAL CATALYSTS WITH AND WITHOUT CERIUM ADDITIVES [J].

OH, SH ;

MITCHELL, PJ ;

SIEWERT, RM .

JOURNAL OF CATALYSIS, 1991, 132 (02) :287-301

[8] EFFECTS OF RHODIUM ADDITION ON METHANE OXIDATION BEHAVIOR OF ALUMINA-SUPPORTED NOBLE-METAL CATALYSTS [J].

OH, SH ;

MITCHELL, PJ .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1994, 5 (1-2) :165-179

[9]

SIEWERT RM, 1991, Patent No. 0468556

[10] Deactivation by poisoning of three-way catalyst for natural gas-fuelled engines [J].

Tabata, T ;

Baba, K ;

Kawashima, H .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1995, 7 (1-2) :19-32

← 1 2 →