Affiliation:
1. School of Material Science and Engineering, Beijing University of Chemistry and Technology, Beijing, 100029, China
2. Beijing Research Institute of Chemical Industry, Beijng, 100013, China
Abstract
TiCl 4/ MgCl 2, TiCl 4/ MgCl 2/donor catalysts and TiCl 4/donor complexes were prepared in this experiment; the donors are EB, DNBP, DBPG, DBW, PPDE, and BMMF respectively. Chemical states of Ti on the surface of MgCl 2-supported Z – N catalysts were analyzed with X-ray photoelectron spectroscopy (XPS). The interaction among components of a catalyst is characterized, and the function of internal donor in the catalyst was demonstrated according to the change of binding energy of Ti 2 p 3/2. We may conclude from the experiment that the kind of internal donors influence the electron density around titanium, and further the electron density around active titanium species effect catalyst activity to some extent. It was also noted that the interaction between internal donors and titanium is weakened remarkably by moisture and oxygen in ambient.
Publisher
World Scientific Pub Co Pte Lt
Subject
Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics
Cited by
9 articles.
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