Abstract In this paper, we report on a zirconocene dichloride/modified methylaluminoxane catalyst system supported on a natural diatomite in order to provide ethylene polymerization catalysts for gas phase or slurry processes. Such natural diatomite support exhibited similar properties of silica-based molecular sieve because of their similar chemical composition and porous structure. The supported catalysts were shown to be highly active and to form flocculent and fibrous polyethylene as proven by scanning electron microscopy. Graphic abstract A natural resource diatomite was successfully applied as a support for zirconocene by us. Such catalyst system performed as a silica-based molecular sieve supported zirconocene in the ethylene polymerization. Polyethylene with flocculent and fibrous structure was obtained.

中文翻译：

---

使用硅藻土作为二氯化锆/改性甲基铝氧烷载体的乙烯聚合

摘要 在本文中，我们报道了一种负载在天然硅藻土上的二氯化锆/改性甲基铝氧烷催化剂体系，以便为气相或淤浆工艺提供乙烯聚合催化剂。这种天然硅藻土载体表现出与二氧化硅基分子筛相似的性质，因为它们具有相似的化学成分和多孔结构。经扫描电子显微镜证实，负载型催化剂具有高活性并能形成絮状和纤维状聚乙烯。图形摘要 我们成功地应用了一种天然资源硅藻土作为二茂锆的载体。这种催化剂体系在乙烯聚合中用作二氧化硅基分子筛负载的二茂锆。得到具有絮状和纤维状结构的聚乙烯。