CAJ | 학술논문

采用溶液浸渍法、浆液浸涂法和超声波辅助浸涂法制备了3种Fe‐Mn／ZSM‐5／CC（CC即堇青石）整体式催化剂，研究了其催化还原 NOx 的性能。利用 N2吸附脱附、XRD、扫描电镜等技术对催化剂结构和性质进行探究。结果表明，制备方法对Fe‐M n／ZSM‐5／CC整体式催化剂催化还原NOx 性能有明显的影响，与溶液浸渍法和浆液浸涂法相比，超声波辅助浸涂法制备的催化剂具有较大的比表面积、较均匀的涂层以及较多的介孔结构，使其显示出最佳的催化性能，在180～430℃的温度范围内其转化率都在90％以上。
채용용액침지법、장액침도법화초성파보조침도법제비료3충Fe‐Mn／ZSM‐5／CC（CC즉근청석）정체식최화제，연구료기최화환원 NOx 적성능。이용 N2흡부탈부、XRD、소묘전경등기술대최화제결구화성질진행탐구。결과표명，제비방법대Fe‐M n／ZSM‐5／CC정체식최화제최화환원NOx 성능유명현적영향，여용액침지법화장액침도법상비，초성파보조침도법제비적최화제구유교대적비표면적、교균균적도층이급교다적개공결구，사기현시출최가적최화성능，재180～430℃적온도범위내기전화솔도재90％이상。
Solution impregnation ,slurry dip coating and ultrasonic assisted dip coating were a‐dopted to prepare three kinds of Fe‐Mn/ZSM‐5/CC (CC :cordierite) monolithic catalysts .Their performance in catalytic reduction of NO x was studied .N2 adsorption and desorption ,XRD and SEM were used to explore the structure and properties of the catalysts .The results show that the catalyst preparation methods had significant impact on the performance of Fe‐M n/ZSM‐5/CC monolithic catalysts in catalytic reduction of NO x .The catalyst produced by ultrasonic assisted dip coating showed the best catalytic performance when compared with those prepared by solution impregnation or slurry dip coating .The reason was explained by its larger specific surface area , more uniform coatings and mesoporous structure .Its conversion rate was above 90% in the tem‐perature range of 180~430 ℃ .