以VO^(2+)为自旋探针的配位共聚催化剂分子筛载体的ESR研究(英文)  

ESR STUDY ON VO^(2+) PROBED ZEOLITE CARRIERS OF CATALYSTS FOR COPOLYMERIZATION

作　　者：王立[1] 封麟先[1] 杨士林[1] 

机构地区：[1]浙江大学高分子科学与工程学系,杭州310027

出　　处：《波谱学杂志》1993年第1期25-30,共6页Chinese Journal of Magnetic Resonance

基　　金：Program supported by National Natural Science Fundation of China

摘　　要：以VO^(2+)为自旋探针,观察了VO(2+)负载的分子筛载体的微环境,在计算机上模拟了复杂的多中心的实验ESR谱,发现VO^(2+)在载体上的分散状况不仅取决于制备条件,也和分子筛的种类有关。利用这种方法,可得探针在载体上所处微环境的信息,进而可用于指导配位聚合催化剂载体的选择。Using VO2+ as spin probe, the micro-environment of VO2+ supported on zeolite was observed by ESR technique. Computer program was built for simulating ESR spectra with complicated and multi-centers. It was found that the dispersion character of VO2+ is dependent upon the preparation conditions employed and the carriers chosen. This may serve as a new method to get micro-environment information of carriers and can be used in the choice of carriers of coordination catalysts.

关 键 词：ESR 配位聚合 催化剂 分子筛 

分 类 号：O643.36[理学—物理化学]