One-phase supported titanium-based catalysts for polymerization of ethylene and its copolymerization with 1-alkenes. I. Preparation and properties of catalysts

✍ Scribed by Zdeněk Salajka; Jan Kratochvíla; Oldřich Hamřík; Antonín Kazda; Mihnea Gheorghiu

• Book ID: 105337527
• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 593 KB
• Volume: 28
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/pola.1990.080280701

✦ Synopsis

Abstract

Active one‐phase Ti‐based supported catalysts were prepared by interacting the activated silica gel (0.8 mmol OH groups/g) with R~x~AlCl~3–x~ (x = 1–3, Al/OH = 0.9–1.0), then with TiCl~4~ and R~2~Mg (Mg/Ti = 1–16), and finally with R~3~Al (Al/Ti = 0–16). The catalyst activity in the fluid bed ethylene polymerization varied between 40 and 540 kg PE/g Ti h, depending on the component used and preparation conditions employed. A mechanism of the polymerization‐active species formation was proposed.