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.
出处
《波谱学杂志》
CAS
CSCD
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
关键词
ESR
配位聚合
催化剂
分子筛
ESR
Coordination copolymerization catalyst
Zeolite .
