X-ray photoelectron spectroscopic analysis of effect of EB on electronic state of Ti species in TiCl_4/MgCl_2/EB Ziegler-Natta catalysts

作     者：SONG Yang GAO Mingzhi ZHAO Xi MAO Bingquan 

作者机构：College of Science Beijing University of Chemical Technology Bei- jing 100029 China Polyolefin Engineering and Research Center Beijing Research Institute of Chemical Industry Beijing 100029 China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2006年第51卷第11期

页      面：1393-1395页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

主　　题：Ziegler-Natta催化剂 内给体 苯甲酸乙酯 XPS 光谱分析 

摘      要：X-ray photoelectron spectroscopy (XPS) analysis was performed on TiCl4/MgCl2/EB (ethyl benzoate) catalysts, TiCl4/MgCl2 internal donor free catalysts and TiCl4·EB complex to elucidate the effect of EB on electronic state of Ti species in TiCl4/MgCl2/ EB catalysts. Combined with FTIR analysis, the way that EB influenced electronic state of Ti species was postulated. XPS results showed that the binding en- ergy of Ti2p3/2 in TiCl4/MgCl2/EB catalysts was lower than that in TiCl4/MgCl2 internal donor free catalysts indicating that EB influenced electronic state of Ti atoms by providing electrons to Ti atoms in TiCl4/ MgCl2/EB catalysts.