FeCrAl合金丝网上ZSM-5分子筛膜的制备及其催化性能  

Preparation and Catalytic Properties of ZSM-5 Zeolite Films on FeCrAl Alloy Grids

作　　者：武慧慧[1] 厉刚[1] 

机构地区：[1]浙江大学化学系,浙江杭州310027

出　　处：《石油学报（石油加工）》2012年第4期577-582,共6页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(50976103)资助

摘　　要：采用原位生长法制备了以FeCrAl合金丝网为载体的ZSM-5分子筛膜催化剂,用XRD和SEM表征了催化剂的结构与形貌。以正辛烷气相裂解为探针反应,对分子筛膜的催化活性进行了表征。结果表明,在其余反应条件相同的情况下,采用一步法合成的ZSM-5(C)膜或二步法合成的ZSM-5(M)膜为催化剂,正辛烷的裂解转化率均高于以空白载体为催化剂的,且ZSM-5(C)膜比ZSM-5(M)膜具有更高的催化活性。400℃时,ZSM-5(C)膜和空白载体催化正辛烷裂解的转化率分别为24.2%和2.0%。具有裂解催化活性的ZSM-5分子筛膜在吸热燃料方面有良好的应用前景。ZSM-5 film catalysts with ZSM-5 crystals on FeCrAl grids were prepared by in-situ growth method,and characterized by X-ray diffraction（XRD） and scanning electron microscopy（SEM） techniques.The catalytic performance of these films was evaluated by using n-octane cracking as a model reaction.The results showed that the conversion rates of n-octane over ZSM-5（C） film prepared by one-step method and over ZSM-5（M） film prepared by two-step method were higher than that over the bare FeCrAl grid.ZSM-5（C） film showed higher catalytic activity than ZSM-5（M） film.The conversion rates of n-octane at 400℃ were 24.2% over ZSM-5（C） film and only 2.0% over the bare FeCrAl grid.ZSM-5 catalytic films prepared herein showed good application in the field of endothermic fuels.

关 键 词：ZSM-5分子筛膜 FeCrAl合金丝网 催化裂解 正辛烷 

分 类 号：O643.3[理学—物理化学]