CAJ | 학술논문

采用溶胶凝胶法制备了一系列Mn-Ce/TiO2催化剂样品，并用比表面积及孔径分析仪（BET）、X射线衍射仪（XRD）和扫描电子显微镜（SEM）等对催化剂进行了表征，考察了活性组分 Mn、Ce 负载顺序对催化剂结构的影响，并在固定床连续流动反应器上对其催化活性进行了评价。结果表明，催化剂晶相均为锐钛矿型结构， Mn、Ce活性组分在载体表面高度分散或形成了无定形结构；Mn、Ce同时负载时催化剂表面活性组分分布均匀，比表面积最大，为97.6m2/g，且催化剂孔径分布以中孔为主；Mn、Ce同时负载时催化剂活性最好，反应温度为200℃时，NO转化率达到90%以上。
채용용효응효법제비료일계렬Mn-Ce/TiO2최화제양품，병용비표면적급공경분석의（BET）、X사선연사의（XRD）화소묘전자현미경（SEM）등대최화제진행료표정，고찰료활성조분 Mn、Ce 부재순서대최화제결구적영향，병재고정상련속류동반응기상대기최화활성진행료평개。결과표명，최화제정상균위예태광형결구， Mn、Ce활성조분재재체표면고도분산혹형성료무정형결구；Mn、Ce동시부재시최화제표면활성조분분포균균，비표면적최대，위97.6m2/g，차최화제공경분포이중공위주；Mn、Ce동시부재시최화제활성최호，반응온도위200℃시，NO전화솔체도90%이상。
Manganese and cerium oxide catalysts were prepared by sol-gel method and used for the low-temperature selective catalytic reduction (SCR) of NO with NH3. The catalysts were characterized by BET surface area,X-ray diffraction (XRD) and scanning electron microscope (SEM). The influence of loading sequence on the structure of Mn-Ce/TiO2 catalysts was investigated. The results showed that the phase structure of catalysts was anatase. Mn and Ce distributed in amorphous form. When Mn and Ce were supported on same carrier,the specific surface area of catalyst was the largest,which achieved 97.6m2/g,and active components of Mn and Ce were well distributed. The catalyst activity was also the highest when Mn and Ce were supported on same carrier. The NO removal efficiency was above 90%, when the reaction temperature was 200℃.