【摘要】 通过吡啶吸附红外光谱和光电子能谱对负载型非茂催化剂CpTi(dbm)Cl2的载体和催化剂的结构进行了表征,发现MgCl2/高岭土双载体表面存在大量强L酸中心;经双载体负载后的CpTi(dbm)Cl2中Ti2p的电子结合能增加了0.6～0.65eV。分析结果表明,Mg对Ti的电子效应以及载体中MAO对CpTi(dbm)Cl2的预活化作用是促使负载后活性提高的重要原因。更多还原

【Abstract】 The structures of supported CpTi（dbm）Cl₂ and the supports were characterized with pyridine adsorptiondesorption IR and XPS. It was discovered that there were a lot of strong Lewis acid on the surface of the MgCl₂/kaolin bisupport and the binding energy of Ti 2p in （CpTi）（dbm）Cl₂ was increased by 0.6⁰.65 eV after it was supported on the bisupport. The （analysis） result showed that both the （electron） effect of Mg on Ti and the preactivation of CpTi（dbm）Cl₂ by MAO in the bisupport （contributed） a lot to the increase of activity after the catalyst was supported.更多还原