文章信息/Info

Title:

 Research Progress on Ceria-based Rare-earth Catalytic Materials using for Air Pollution Control

作者:

 翁端1; 冉銳 1; 曹譯丹2; 劉爽3; 吳曉東 1; 司知蠢4

1. 清華大學(xué)材料學(xué)院，先進(jìn)材料教育部重點實驗室，北京，100084
2. 戴爾豪斯大學(xué)，物理與大氣科學(xué)系&化學(xué)系，哈利法克斯
3. 中國海洋大學(xué)材料科學(xué)與工程學(xué)院，山東青島，266100
4. 清華大學(xué)深圳研究生院，先進(jìn)材料研究所，廣東深圳， 518055

Author(s):

 WENG Duan 1; *;  RAN Rui 1;  CAO Yidan 2;  LIU Shuang 3;  WU Xiaodong 1;  SI Zhichun 4

1. The Key Laboratory of Advanced Materials of Ministry of Education; School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
2. Department of Physics and Atmospheric Science & Department of Chemistry, Dalhousie University, Halifax, Canada.
3. School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China
4. Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China

關(guān)鍵詞:

稀土; CeO2; 催化; 大氣污染治理; 機(jī)動車尾氣排放控制; 固定源脫硝; 揮發(fā)性有機(jī)物催化燃燒

Keywords:

rare earth;  ceria-based;  catalysis;  air pollution purification;  automotive emission control;  denitrification in stationary source;  VOCs catalytic combustion

DOI:

10.7502/j.issn.1674-3962.2018.10.02

文獻(xiàn)標(biāo)志碼:

A

摘要:

 稀土氧化物，尤其是鑭、鈰等輕稀土元素的氧化物，被廣泛應(yīng)用于催化領(lǐng)域。本文圍繞以CeO2為代表的稀土催化材料在大氣污染治理中的作用進(jìn)行了綜述，詳細(xì)介紹了鈰基稀土催化材料在機(jī)動車尾氣凈化、煙氣脫硝、揮發(fā)性有機(jī)污染物催化燃燒等領(lǐng)域的最新研究進(jìn)展。在汽油車尾氣凈化方面，如何進(jìn)一步提高CeO2基復(fù)合氧化物自身的穩(wěn)定性，同時提高活性金屬的利用效率、延長催化劑使用壽命是研究重點；在柴油車氮氧化物和顆粒物的排放控制方面，通過成分調(diào)控，利用稀土氧化物特別是氧化鈰提高催化劑的低溫活性、抗中毒性能和水熱穩(wěn)定性等是研究熱點；在固定源煙氣脫硝方面，稀土氧化物尤其是氧化鈰基脫硝催化劑具有高效、無毒、無二次污染性等特點，可逐步替代高毒的釩鈦系，實現(xiàn)環(huán)境友好；在揮發(fā)性有機(jī)物催化燃燒方面CeO2催化材料也已被實驗證明具有良好的催化氧化能力。本綜述旨在為促進(jìn)本領(lǐng)域的研究者更清楚地了解鈰基稀土催化材料在大氣污染治理中所發(fā)揮的作用及應(yīng)用潛力，同時為科學(xué)地設(shè)計下一代高性能催化材料和應(yīng)用提供參考。

Abstract:

Light rare-earth oxides such as La, Ce-containing oxides were widely applied in catalysis. The present review mainly sumarized the research progress of ceria-based catalytic materials in air pullotion purifaction, including automotive exhaust purification, industrial denitrification, and catalytic combustion of volatile organic compounds (VOCs). For automotive emission control, improving the stablity of CeO2-based cataysts as well as the utilization of the precious metals was critical for prolonging the lifetime of the catalysts. For NOx and soot elimination, using rare earth oxides, especially CeO2, to improve the low-temperature activity, anti-poisoning performance and hydrothermal stability of the catalysts was a research hotspot. For denitrification in stationary source, due to the characteristics of high efficiency, non-toxicity and no secondary pollution on CeO2-based cataysts, it had a potential for these catalysts to gradually replace those high toxic vanadium-titanium catalysts. For VOCs catalytic combustion, CeO2 materials had also been proved to own good catalytic oxidation ability. The purpose of this review was to help researchers in this field to understand the role and application potential of cerium-based rare earth catalytic materials in air pollution control. It also provided a reference for the further scientific design and application on high-performance catalysts.