广东化工
廣東化工
엄동화공
GUANGDONG CHEMICAL INDUSTRY
2011年
10期
32-33
,共2页
二氧化碳%二氧化钛%固体溶体%表征%协同效应
二氧化碳%二氧化鈦%固體溶體%錶徵%協同效應
이양화탄%이양화태%고체용체%표정%협동효응
timdixide%titania%solidsolution%characterization%synergism
分用XRD,XPS,CO-TPR,NH3-TPD和IR等方法表征了SnO2-TiO2固溶体催化剂的物理化学性质,不同配比的SnO2和TiO2均可形成均一的具有金红石结构的连续固溶体,TiO2表面没有酸性,SnO2和SnO2-TiO2呈微弱酸性,经CO还原的SnO2-TiO2上存在大量的强碱中心,说明SnO2和TiO2之间发生了协同作用。SnO2-TiO2固溶体的这些物化性质均十分有利于脱除SO2和NO的氧化还原反应。
分用XRD,XPS,CO-TPR,NH3-TPD和IR等方法錶徵瞭SnO2-TiO2固溶體催化劑的物理化學性質,不同配比的SnO2和TiO2均可形成均一的具有金紅石結構的連續固溶體,TiO2錶麵沒有痠性,SnO2和SnO2-TiO2呈微弱痠性,經CO還原的SnO2-TiO2上存在大量的彊堿中心,說明SnO2和TiO2之間髮生瞭協同作用。SnO2-TiO2固溶體的這些物化性質均十分有利于脫除SO2和NO的氧化還原反應。
분용XRD,XPS,CO-TPR,NH3-TPD화IR등방법표정료SnO2-TiO2고용체최화제적물이화학성질,불동배비적SnO2화TiO2균가형성균일적구유금홍석결구적련속고용체,TiO2표면몰유산성,SnO2화SnO2-TiO2정미약산성,경CO환원적SnO2-TiO2상존재대량적강감중심,설명SnO2화TiO2지간발생료협동작용。SnO2-TiO2고용체적저사물화성질균십분유리우탈제SO2화NO적양화환원반응。
The physicochemical properties of SnO2-TiO2 solid solution catalyst have been characterized in the ways of XRD,XPS,CO-TPR,NH3-TPD and IR.The results show that even successive solid dissolved substance which is similar to the structure of rutile could be formed by using different ratios of SnO2 and TiO2.There isn＇t acidity on the surface of TiO2,while SnO2 and SnO2-TiO2 show weak acidity and lots of alkali centers exist on the surface of SnO2-TiO2 reduced by CO,which indicates synergism has occurred between SnO2 and TiO2.These physicochemical properties of SnO2-TiO2 solid solution catalyst are helpful to redox reaction for removal of SO2 and NO.
