A screening study on the activation energy of vanadate-based catalysts for diesel soot combustion

被引：36

作者：

Badini, C ^{[1
]}

Saracco, G ^{[1
]}

Russo, N ^{[1
]}

Specchia, V ^{[1
]}

机构：

[1] Politecn Torino, Dipartimento Sci Mat & Ingn Chim, I-10129 Turin, Italy

来源：

CATALYSIS LETTERS | 2000年 / 69卷 / 3-4期

关键词：

Cs-K-V catalysts; diesel soot; catalytic combustion; activation energy; catalyst stability;

D O I：

10.1023/A:1019046728778

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 activation energy of carbon combustion catalysed by alkali vanadates or alkali vanadates/chlorides mixtures is assessed by the Ozawa method. The most active catalyst, Cs4V2O7, entails more than 50% decrease of the activation energy compared to non-catalytic combustion (from 157 down to 75 kJ/mol). The catalyst performance is enhanced when the catalyst is dissolved in a eutectic liquid (e.g., AgCl + CsCl), which likely improves the catalyst/carbon contact conditions.

引用

页码：207 / 215

页数：9

共 24 条

[1] COMBUSTION OF SOOT DEPOSITS FROM DIESEL-ENGINES ON MIXED OXIDES OF VANADIUM PENTOXIDE AND CUPRIC OXIDE [J].

AHLSTROM, AF ;

ODENBRAND, CUI .

APPLIED CATALYSIS, 1990, 60 (01) :157-172

[2]

AMBROGIO M, 2000, IN PRESS 16 INT S CH

[3]

AMBROGIO M, 2000, IN PRESS CHEM ENG SC

[4]

AUDINET M, EUR AUT C 99 BARC SP

[5] Combustion of carbon particulate catalysed by mixed potassium vanadates and KI [J].

Badini, C ;

Saracco, G ;

Specchia, V .

CATALYSIS LETTERS, 1998, 55 (3-4) :201-206

[6] Suitability of some promising soot combustion catalysts for application in diesel exhaust treatment [J].

Badini, C ;

Saracco, G ;

Serra, V ;

Specchia, V .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 18 (1-2) :137-150

[7] Thermal stability of Cu-K-V catalyst for diesel soot combustion [J].

Badini, C ;

Serra, V ;

Saracco, G ;

Montorsi, M .

CATALYSIS LETTERS, 1996, 37 (3-4) :247-254

[8] LOW-TEMPERATURE CARBON PARTICULATE OXIDATION ON A SUPPORTED CU/V/K CATALYST [J].

CIAMBELLI, P ;

PALMA, V ;

VACCARO, S .

CATALYSIS TODAY, 1993, 17 (1-2) :71-78

[9] CATALYTIC-OXIDATION OF SOOT FROM DIESEL EXHAUST-GASES .1. SCREENING OF METAL-OXIDE CATALYSTS BY TG DTG DTA ANALYSIS [J].

CIAMBELLI, P ;

CORBO, P ;

PARRELLA, P ;

SCIALO, M ;

VACCARO, S .

THERMOCHIMICA ACTA, 1990, 162 (01) :83-89

[10] REACTIVITY ASSESSMENT OF COALS VIA A WEIGHTED MEAN ACTIVATION-ENERGY [J].

CUMMING, JW .

FUEL, 1984, 63 (10) :1436-1440

← 1 2 3 →