柴油车尾气氧化催化剂硫磷中毒研究进展  

RESEARCH PROGRESS ON SULFUR AND PHOSPHORUS POISONING IN DIESEL VEHICLE EXHAUST OXIDATION CATALYSTS

作　　者：刘丛玮 王猛 张燕 单文坡[1,2,3] Liu Congwei;Wang Meng;Zhang Yan;Shan Wenpo(Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen Fujian,361021;University of Chinese Academy of Sciences;Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control,Ningbo Urban Environment Observation and Research Station,Institute of Urban Environment,Chinese Academy of Sciences)

机构地区：[1]中国科学院城市环境研究所,中国科学院区域大气环境研究卓越创新中心,福建厦门361021 [2]中国科学院大学 [3]中国科学院城市环境研究所宁波观测研究站,浙江省城市环境过程与污染控制重点实验室

出　　处：《石油炼制与化工》2024年第2期23-35,共13页Petroleum Processing and Petrochemicals

基　　金：国家重点研发计划项目(2022YFC3701804);国家自然科学基金项目(52225004);中国科学院青年创新促进会项目(2022309)。

摘　　要：柴油车尾气氧化催化剂(DOC)是柴油车污染物排放后处理系统的重要组成部分,主要作用是有效去除未完全燃烧产生的一氧化碳(CO)和碳氢化合物(HC),并将部分一氧化氮(NO)氧化为二氧化氮(NO_(2)),促进后续柴油颗粒捕集器(DPF)再生和氨选择性催化还原(NH_(3)-SCR)反应。但在实际运行时,处于整个后处理系统最前端的DOC不可避免地会受到柴油以及润滑油中硫化物和磷化物的毒化,从而影响催化剂后处理的净化效率。本文从硫磷对DOC催化性能的影响、硫磷中毒机制和缓解硫磷中毒策略3个方面详细综述了DOC催化剂硫、磷及硫磷复合中毒的研究进展,并针对DOC硫、磷中毒的科学研究与实际应用之间存在的差距,展望了未来抗硫磷中毒DOC催化剂的发展方向。Diesel vehicle exhaust oxidation catalyst(DOC)is an important part of diesel vehicle emission post-treatment system.Its main function is to effectively remove carbon monoxide(CO)and hydrocarbons(HC)caused by incomplete combustion,and oxidize a portion of nitric oxide(NO)to nitrogen dioxide(NO_(2)),which promotes the subsequent regeneration of diesel particulate filters(DPF)and ammonia selective catalytic reduction(NH_(3)-SCR)reactions.However,in practical operation,the DOC,which is located at the forefront of the entire after treatment system for diesel emission,inevitably suffers from sulfides and phosphates in diesel and lubricating oil,which affects the overall purification efficiency of the after treatment system.In this paper,the effects of sulfur and phosphorus on the catalytic performance of DOC,the mechanism of sulfur and phosphorus poisoning,and strategies for mitigating sulfur and phosphorus poisoning were reviewed in detail.In view of gap between scientific research and practical applications of DOC for sulfur and phosphorus poisoning,the development direction of DOC for sulfur and phosphorus poisoning in the future was prospected.

关 键 词：柴油车 尾气氧化催化剂 硫磷中毒 中毒机制 缓解中毒策略 

分 类 号：TQ426[化学工程]