大孔PVC树脂负载H_3SiW_(12)O_(40)催化剂的酸性研究  

Study on Acidity of Supported-Heteropoly Acid Catalysts of PVC Resin

作　　者：韦卉[1] 徐寒莉[2] 侯若冰[1] 

机构地区：[1]广西师范大学化学化工学院,广西桂林541004 [2]广西师范学院化学系,广西南宁530001

出　　处：《化工技术与开发》2005年第2期3-4,29,共3页Technology & Development of Chemical Industry

摘　　要：以大孔 PVC树脂为载体 ,负载 Keggin型杂多酸 H3Si W1 2 O4 0 经过处理后得到了一种新型的杂多酸催化剂。本文采用电化学分析法测定负载杂多酸催化剂的总酸量及强、中、弱三种不同强度酸位的酸量 ,用吡啶 -红外光谱测定出Bronsted酸和 L ewis酸的比例 ,从而得出催化剂中 Bronsted酸和 LA new type of heteropoly acids catalyst was prepared by supporting keggin heteropoly acids H_3SiW_(12)O_(40) onto PVC resin. The acid contents and the different intensity of strong, medium and weak acid were characterized by electrochemistry analyzed, and the acid ratio of bronsted and Lewis were characterized by pyridine-IR spectra. The acid types and their contents in different acid sites of catalysts were known.

关 键 词：杂多酸催化剂 电化学分析法 酸量 吡啶-红外光谱 酸类型 

分 类 号：O643[理学—物理化学] TQ426[理学—化学]