24-O-05 - MCM-41 as support for metallocene catalysts - ethylene polymerization

摘要: Publisher Summary This chapter discusses Al-containing (AlMCM) and all-silica (SiMCM) MCM-41 as supports for Cp2ZrCl2 a catalyst ethylene (C2H4) polymerization. While SiMCM without pretreatment with metallocene or methylaluminoxane (MAO) did not fix the in catalytically active form, also observed commercial silica sample, supported on MAO-free AlMCM yielded polymers narrow polydispersity highest molecular weight of series, although low activity. All MAO pretreated originated catalysts, which exhibit activities comparable to those homogeneous zirconocenes.