Chemical modification of silica support to improve the branching ability of Phillips catalyst

✍ Scribed by Dwivedi, Sumant (author);Gujral, Satnam Singh (author);Taniike, Toshiaki (author);Terano, Minoru (author)

• Book ID: 120309187
• Publisher: International Union of Pure and Applied Chemistry
• Year: 2012
• Tongue: English
• Weight: 175 KB
• Volume: 85
• Category: Article
• ISSN: 0033-4545
• DOI: 10.1351/PAC-CON-12-03-10

✦ Synopsis

A variety of modified Phillips catalysts were synthesized by employing three kinds of chemical modifiers for silica support: (1) organic modification with silane coupling agents, (2) Lewis acidic modification with typical metal alkyl or alkoxide, and (3) modification with transition-metal alkoxide. The activity and branching ability of these catalysts were investigated for ethylene polymerization. It was revealed that the chemical modification of silica support was a good methodology for controlling the catalyst activity as well as the branching level in resultant polyethylene.