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HZSM-5沸石酸性对于甲苯异构化反应性能的影响
Effect of Acidity of HZSM-5 Zeolite on Reactivity of Xylene Isomerization
【摘要】 研究了用不同模板剂、添加不同类型粘结剂以及高温水蒸汽处理对 HZSM-5沸石表面酸性及二甲苯异构化性能的影响。得出了不同模板剂合成的 HZSM-5沸石酸性与甲苯异构化活性间的关系;而且随添加粘结剂 A(?)2 O3-SiO2 中 SiO2 含量增加以及水热处理温度升高,沸石酸性及二甲苯异构化活性均下降。同时还对二甲苯异构化机理进行了讨论。
【Abstract】 This paper studies effect on surface acidity of HZSM-5 zeolite and perform-ance of xylene isomerization of different template reagents used for synthesizingHZSM-5 zeolite,several kinds of adhesive agent added to HZSM-5 zeolite,and hightemperature steam treatment.Relationship between synthetic HZSM-5 zeoliteusing different template reagents and the activity of xylene isomerization areshown.The acidity of HZSM-5 zeolite and the activity of xylene isomerizationdecrease as hydrothermal treatment temperature and SiO2 content in the SiO2-Al2O3adhesive agent added to HZSM-5 zeolite increase.Meanwhile mechanisms of xyleneisomerization are discussed.
- 【文献出处】 石油化工 ,Petrochemical Technology , 编辑部邮箱 ,1989年12期
- 【被引频次】1
- 【下载频次】50