Heterogeneous Catalysis Reaction Between Carbon Disulfide and Atmospheric Particles

Abstract

Abstract: The formation of carbonyl sulfide(COS) by catalytic oxidization of carbon disulfide (CS₂) overatmospheric particle catalysts was explored through FTIR, MSand 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 XRDand 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.Amodel 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.SO₄^2- could be pro-duced by further oxidation of active elemental sulfur.

Key words: Carbon disulfide, Carbonyl sulfide, Atmospheric particles, Heterogeneous catalysis

CLC Number:

O643.1

TrendMD:

WANG Lin, ZHANG Feng, CHEN Jian-Min . Heterogeneous Catalysis Reaction Between Carbon Disulfide and Atmospheric Particles[J]. Chem. J. Chinese Universities, 2002, 23(5): 866.

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Heterogeneous Catalysis Reaction Between Carbon Disulfide and Atmospheric Particles

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