CAJ | 학술논문

采用工业用V2 O5-WO3/TiO2催化剂,基于傅里叶原位红外光谱( FT-IR)技术考察SO2的氧化过程及烟气组分对SO2氧化行为的影响；结果表明,SO2在催化剂表面氧化主要是首先吸附在催化剂表面V2 O5活性位上,占据其O原子,以SO2-3形式存在,后与催化剂表面V5+-OH发生反应,生成金属硫酸盐( VOSO4)中间产物,O2重新氧化催化氧化过程中由于被SO2夺取O原子而被还原的V2 O5物种,使V4+转化为V5+,促进金属硫酸盐( VOSO4)向SO3转化；SO2与NO、NH3的竞争吸附阻碍SO2在V2 O5活性点位上的氧化；在SCR中,NO的脱除与SO2的氧化是相互抑制的关系。
채용공업용V2 O5-WO3/TiO2최화제,기우부리협원위홍외광보( FT-IR)기술고찰SO2적양화과정급연기조분대SO2양화행위적영향；결과표명,SO2재최화제표면양화주요시수선흡부재최화제표면V2 O5활성위상,점거기O원자,이SO2-3형식존재,후여최화제표면V5+-OH발생반응,생성금속류산염( VOSO4)중간산물,O2중신양화최화양화과정중유우피SO2탈취O원자이피환원적V2 O5물충,사V4+전화위V5+,촉진금속류산염( VOSO4)향SO3전화；SO2여NO、NH3적경쟁흡부조애SO2재V2 O5활성점위상적양화；재SCR중,NO적탈제여SO2적양화시상호억제적관계。
This work briefly reveals the process of catalytic oxidation of SO2 and the influences of NH3 , NO and O2 on the oxidation behavior based on FT-IR. It suggests that the process of oxidation of SO2:the absorption of SO2 on V2 O5 sites occupying its O atom in the form of SO2-3 ;reaction between absorbed SO2 and O atom in V5+-OH to form an VOSO4-like structure;reoxidation of V4+ to V5+ by O2 , promoting the transformation from VOSO4-like intermediate to SO3 and V2 O5 . NH3 and NO competitively absorb with SO2 , suppressing its oxidation behavior. The removal of NOx and the oxidation of SO2 is the relationship of mutual inhibition.