Mg改性的Hβ沸石表面酸性及催化性能的研究  

Surface acid properties and catalytic properties of Hβ-zeolite modified by Mg^(2+)

作　　者：赵谦[1] 王晓红[1] 姜廷顺[1] 

机构地区：[1]江苏大学化学化工学院,江苏镇江212013

出　　处：《化工矿物与加工》2006年第2期17-19,共3页Industrial Minerals & Processing

基　　金：江苏省教育厅自然科学基金资助(04KJB30040);江苏大学微纳米中心开放基金资助(1291400001)

摘　　要：用离子交换法制备Hβ沸石,然后再用浸渍法制备不同Mg含量的Hβ沸石样品,通过XRD、NH3-TPD和FT-IR等手段表征了样品的晶相、酸量及酸性,考察了β-甲基萘在样品上的催化性能。结果表明:随着Mg含量的增加,样品的结晶度、酸量下降,酸强度增加;样品对β-甲基萘的催化活性与酸量相对应,异构化选择性高于歧化选择性。A series of Hβ zeolite samples were prepared by ion-cxchange method at different roasting temperature. The above samples were characterized by means of XRD, FT - IR and NH3-TPD. The catalytic properties on β-MN sample were observed. The results showed that the crystallinity and the acid amount of samples were fallen-off with the elevated roasting temperature. The activity and acid amount were relevant, The selectivity of isomerization was higher than the selectivity of disproportionation, DMN was easily produced from β-MN at 400℃ reaction temperature,

关 键 词：HΒ沸石 改性 表面酸性 催化性能 

分 类 号：TD985[矿业工程—选矿] O643[理学—物理化学]