多孔氧化硅负载银催化剂催化消除VOCs的研究进展
Research progress in catalytic elimination of VOCs by porous SiO2 supported silver catalysts
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摘要: 挥发性有机污染物(VOCs)已成为目前我国主要的大气污染物之一,其中VOCs催化消除受到许多研究者的关注.多孔氧化硅材料由于其独特结构与性质,如高比表面积、可调孔径等在吸附、催化领域中受到广泛关注.鉴于此,本文结合本课题组研究成果,对近年来负载型银催化剂,以微孔,介孔与大孔氧化硅材料作为载体从催化剂的制备方法、载体种类、负载量、活性银物种分散度、银氧相互作用、形貌、预处理气氛与温度等因素对负载型银催化剂在VOCs催化反应性能影响进行了归纳和总结.Abstract: Volatile organic pollutants (VOCs) have become one of the major atmospheric pollutants in China, and the catalytic elimination of VOCs has attracted the attention of many researchers. Porous silicon oxide materials have attracted extensive attention in the field of adsorption and catalysis due to their unique structure and properties, such as high specific surface were and adjustable pore size. In view of this, this paper summarized the studies about VOCs catalytic oxidation performance over the porous SiO2 supported silver catalysts combining with the research results of our research group.With microporous, mesoporous and macroporous silica materials as a carrier, the different factors that affect the catalytic of VOCs were discussed in this paper:the preparation methods of catalysts, carrier type, Ag loading, dispersion of the silver species, interaction between silver and oxygen, morphology, pretreatment of atmosphere and temperature and so on.
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Key words:
- porous SiO2 /
- catalyst /
- silver /
- catalytic /
- VOCs
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