DeNOx mechanism on platinum based catalysts

被引：0

作者：

Pitchon, V ^{[1
]}

Fritz, A ^{[1
]}

Maire, G ^{[1
]}

机构：

[1] Univ Strasbourg 1, Inst Le Bel, CNRS URA 1498, Lab Etudes React Catalyt Surfaces & Interfaces, F-67070 Strasbourg, France

来源：

CATALYSIS AND AUTOMOTIVE POLLUTION CONTROL IV | 1998年 / 116卷

关键词：

D O I：

暂无

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The selective reduction of NO by hydrocarbon in an excess of oxygen was studied using a platinum catalyst supported upon La2O3-ZrO2 prepared by a sol-gel technique. Following a standard pre-treatment with oxygen and water, it was found that the platinum was existing in a mixture of both oxidised and reduced forms, yet during the course of the reduction reaction, all of the metal became oxidised. A systematic study of the parameters influencing the reaction demonstrated that NO2 is not a reaction intermediate. Certain conclusions concerning the mechanism of the reaction were drawn: a partially oxidised hydrocarbon could be associated with noble metal-type catalysts.

引用

页码：243 / 253

页数：11

共 9 条

[1] MECHANISM OF THE LEAN NOX REACTION OVER CU/ZSM-5 [J].

ANSELL, GP ;

DIWELL, AF ;

GOLUNSKI, SE ;

HAYES, JW ;

RAJARAM, RR ;

TRUEX, TJ ;

WALKER, AP .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1993, 2 (01) :81-100

[2] SELECTIVE REDUCTION OF NITRIC-OXIDE WITH PROPENE OVER PLATINUM-GROUP BASED CATALYSTS - STUDIES OF SURFACE SPECIES AND CATALYTIC ACTIVITY [J].

BAMWENDA, GR ;

OGATA, A ;

OBUCHI, A ;

OI, J ;

MIZUNO, K ;

SKRZYPEK, J .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1995, 6 (04) :311-323

[3]

BENNET CJ, 1992, APPL CATAL A-GEN, V86, P61

[4] REDUCTION OF NO OVER IMPREGNATED CU/ZSM-5 IN THE PRESENCE OF O-2 [J].

DITRI, JL ;

SACHTLER, WMH .

CATALYSIS LETTERS, 1992, 15 (03) :289-295

[5]

FRITZ A, 1997, IN PRESS

[6]

FRITZ A, 1997, IN PRESS APPL CATA B

[7] SELECTIVE REDUCTION OF NITRIC-OXIDE OVER CU-ZSM-5 ZEOLITE BY WATER-SOLUBLE OXYGEN-CONTAINING ORGANIC-COMPOUNDS [J].

MONTREUIL, CN ;

SHELEF, M .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1992, 1 (01) :L1-L8

[8] PERFORMANCE OF PLATINUM-GROUP METAL-CATALYSTS FOR THE SELECTIVE REDUCTION OF NITROGEN-OXIDES BY HYDROCARBONS [J].

OBUCHI, A ;

OHI, A ;

NAKAMURA, M ;

OGATA, A ;

MIZUNO, K ;

OHUCHI, H .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1993, 2 (01) :71-80

[9] ENHANCEMENT OF CATALYTIC ACTIVITY OF ALUMINA BY COPPER ADDITION FOR SELECTIVE REDUCTION OF NITROGEN MONOXIDE BY ETHENE IN OXIDIZING ATMOSPHERE [J].

TORIKAI, Y ;

YAHIRO, H ;

MIZUNO, N ;

IWAMOTO, M .

CATALYSIS LETTERS, 1991, 9 (1-2) :91-96

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