催化作用
碳氢化合物
化学
热液循环
硫黄
柴油
氧气
超低硫柴油
氢
化学工程
无机化学
环境化学
有机化学
工程类
作者
Avinashkumar V. Karre,Ravinder K. Garlapalli,Ashis Kumar Jena,Namit Tripathi
标识
DOI:10.1016/j.catcom.2023.106682
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 oxidants. Hydrothermal, sulfur, chemical, and hydrocarbon poisoning are primary deactivation mechanisms. Hydrothermal 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.
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