以十六烷基三甲基溴化铵（CTAB）为模板，CTAB与聚苯乙烯（PS）乳液混合物为复合模板剂，采用水热法合成了MoO₃-ZrO₂复合氧化物。利用XRD、SEM、BET和Py-IR等手段对其进行表征，在固定床反应装置上进行MoO₃-ZrO₂复合氧化物催化正己烷异构化活性评价实验。考察了PS乳液对MoO₃-ZrO₂复合氧化物晶相、孔结构、酸性和异构化性能的影响。结果表明，模板剂的组成变化不会改变MoO₃-ZrO₂的晶相结构，添加适量的PS乳液可以形成大孔-介孔的多级孔结构，有利于正己烷的异构化反应。

MoO₃-ZrO₂ composite oxides are synthesized through hydrothermal method by using cetyltrimethylammonium bromide (CTAB) as single template and CTAB+PS emulsion as composite templates,respectively.The samples are characterized by XRD,SEM,BET and Py-IR,and their activities are evaluated through catalytic isomerization of n-hexane in a fixed bed reactor.Effects of adding amount of PS emulsion on the crystal,porous structure,acidity and isomerization activities of MoO₃-ZrO₂ composite oxides are investigated.The results show that crystal structure of MoO₃-ZrO₂ does not change by using templates with different constitutions or ratios.Adding moderate amount of PS emulsion can form macro-/mesoporous hierarchical porous structures,which is good for n-hexane isomerization reaction.

李璐(1992-),女,硕士研究生,从事清洁燃料生产研究,532514374@qq.com