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《Chemical Research In Chinese Universities》 2002-05
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Heterogeneous Catalysis Reaction Between Carbon Disulfide and Atmospheric Particles

WANG Lin, ZHANG Feng, CHEN Jian-Min (Department of Environmental Science & Engineering, Fudan University, Shanghai 200433 , China)  
Abstract The formation of carbonyl sulfide(COS) by catalytic oxidization of carbon disulfide (CS2) overatmospheric particle catalysts was explored through FTIR, MS and a fixed bed stainless steel reactor. XPSwas used to analyze the surface elements on the catalysts. Also the crystallizing conditions and specific sur-faces (areas) of the catalysts were investigated by means of XRD and BET. Some oxides such as CaO,Fe2O3, A12O3 and SiO2 were investigated under the conditions similar to those for the investigation of atmo-spheric particles as a comparison. The results showed that the atmospheric particles and the oxide catalystsexhibited considerably oxidizing activity for CS2 at ambient temperature to form COS. The adsorb activeoxygen over the catalysts' surfaces is the major reason for this reaction. A model was given to explain themechanism on the heterogeneous catalysis reaction. And elemental sulfur as well as COS was one of themain products, even CO2 could be produced by a secondary reaction on some catalysts. SO42- could be pro-duced by further oxidation of active elemental sulfur.
【Fund】: 国家教育部归国留学人员基金资助.
【CateGory Index】: O643.3
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