XPS STUDY OF INTERACTION OF TITANIUM SPECIES WITH DIFFERENT INTERNAL ELECTRON DONORS ONZ–NCATALYSTS

Xi Zhao, Ying Zhang, Yang Song and Gang Wei
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Xi Zhao: School of Material Science and Engineering, Beijing University of Chemistry and Technology, Beijing, 100029, China;
Ying Zhang: Beijing Research Institute of Chemical Industry, Beijng, 100013, China
Yang Song: Beijing Research Institute of Chemical Industry, Beijng, 100013, China
Gang Wei: School of Material Science and Engineering, Beijing University of Chemistry and Technology, Beijing, 100029, China

Surface Review and Letters (SRL), 2007, vol. 14, issue 05, 951-955

Abstract: TiCl4/MgCl2,TiCl4/MgCl2/donor catalysts andTiCl4/donor complexes were prepared in this experiment; the donors are EB, DNBP, DBPG, DBW, PPDE, and BMMF respectively. Chemical states ofTion the surface ofMgCl2-supportedZ–Ncatalysts 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 ofTi2p3/2. 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.

Keywords: XPS; Z–Ncatalyst; internal donor (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07010482

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