State of the art developments in oxidation performance and deactivation of diesel oxidation catalyst (DOC)

被引：20

作者：

Karre, Avinashkumar, V ^{[1
,4
]}

Garlapalli, Ravinder Kumar ^{[2
]}

Jena, Akash ^{[1
]}

Tripathi, Namit ^{[3
]}

机构：

[1] Worley Grp, Baton Rouge, LA 70809 USA

[2] INVISTA, Orange, TX 77630 USA

[3] Linde PLC, Houston, TX 77380 USA

[4] 4949 Essen Lane, Baton Rouge, LA 70809 USA

来源：

CATALYSIS COMMUNICATIONS | 2023年 / 179卷

关键词：

Diesel oxidation catalyst; DOC; Diesel engine; Environmental catalysis; Deactivation; PGM; Exhaust aftertreatment; Bimetallic catalyst; NO OXIDATION; LIGHT-OFF; OXIDE FORMATION; C3H6; OXIDATION; 3-WAY CATALYST; COKE FORMATION; PARTICLE-SIZE; PD; PT/AL2O3; SULFUR;

D O I：

10.1016/j.catcom.2023.106682

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：

State-of-the-art developments in oxidation activity and deactivation mechanisms of the diesel oxidation catalyst (DOC) are reviewed. The effect of temperature, hydrocarbons, CO, H2O, hydrogen, NO, oxygen, NO2, precious metals, and catalyst zoning on DOC's performance is analyzed. CO, NO, and hydrocarbon oxidation is self -inhibited. Hydrogen reduces the light-off temperatures of CO and hydrocarbons. Oxygen and NO2 act as oxi-dants. Hydrothermal, sulfur, chemical, and hydrocarbon poisoning are primary deactivation mechanisms. Hy-drothermal deactivation is the leading cause of Pt-catalyst, and others are less severe. Further improvements regarding biodiesel impact, phosphorous poisoning, and hydrothermal stability are needed to advance DOC science.

引用

页数：17

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