【摘要】 通过FT IR ,TG DTG DTA和XRD等方法研究了CS2 在大气颗粒物表面上的催化氧化 .结果表明 ,城市大气颗粒物的主要成分为Ca(Al2 Si2 O8)·4H2 O和Ca2 (Mn2 Fe) (PO4 ) 2 ·2H2 O ,即水泥的主要成分 ;常温下CS2 在大气颗粒物表面能被催化氧化 ,产生毒性更大的羰基硫 (COS) ,同时产生单质S ;30 3.2K反应速率常数为 9.45× 10 -2 2 cm3 / (molecular·s) .更多还原

【Abstract】 Catalytic oxidation of CS 2 over atmospheric particles were explored through FT-IR, TG-DTG-DTA and XRD analysis. The atmospheric particles collected mainly consist of Ca(Al 2SiO 2O 8)·4H 2O and Ca 2(Mn 2Fe)(PO 4) 2·2H 2O, which are also main components of cements. The products were COS and elementary S. The rate constant was 0.945 ×10 -21?cm 3·molecular -1·s -1 at 303.2?K. The results showed that the reaction may be an important way of the conversion from CS 2 to COS close to the earth’s surface.更多还原