有机溶剂处理对固体超强酸SO_4^(2-)/ZrO_2催化性能的影响  

Performance of SO_4^(2-)/ZrO_2 Superacid Catalysts Treated with Various Organic Solvents

作　　者：王新平[1] 唐新硕[1] 吕光烈[2] 

机构地区：[1]杭州大学化学系 [2]杭州大学中心实验室,杭州310028

出　　处：《石油化工》1993年第9期594-600,共7页Petrochemical Technology

基　　金：国家自然科学基金

摘　　要：系统地研究了不同有机溶剂处理Zr(OH)_4对固体超强酸SO_4^(2-)/ZrO_2催化性能的影响。发现不同有机溶剂处理对催化剂性能的影响有较大区别。经乙醚处理后,催化剂的反应活性大大提高,而经乙醇处理后,反应活性明显降低。利用吸附NH_3的TPD、FT-IR、XRD分析和重量法分析6mol/l HCI处理催化剂时SO_4^(2-)的洗脱量等手段研究有机溶剂处理对SO_4^(2-)/ZrO_2催化性能影响的原因。In this paper,the performance of SO_4^(2-)/ZrO_2 catalysts synthesized by treating Zr(OH)_4 with various organic solvents in the course of their preparation has been studied. The results show that SO_4^(2-)/ZrO_2 treated with ether is the mostt active one, while those treated with alcohol show decreased activity.The effects of organic solvent treatment were investigated by FT-IR, TG, NH_3 absorbed TPD, XRD analysis, and analysis of acidic extractives of SO_4^(2-)from catalysts. It is thought that interaction between organic solvent and hydroxy group on hydroxide surface can affect the form and the ability of SO_4^(2-)to combine with the metallic oxide,and which can affect the strength and quantity of acid centers of SO_4^(2-)/ZrO_2,and their catalytic performance.

关 键 词：有机溶剂 固体超强酸 催化性能 

分 类 号：TQ426.94[化学工程]