Abstract
Reactions of bis(cyclopentadienyl)titanium dichloride, bis(cyclopentadienyl)zirconium dichloride, and bis(cyclopentadienyl)hafnium dichloride with premodified silica gel surfaces were studied. The silica gel surface was pretreated to selectively eliminate nonhydrogen bonded silanols, hydrogen bonded silanols, or both before reaction. By study of the metallocene reactions with these silicas and unmodified silica gel, it was found that the metallocenes react predominantly with nonhydrogen bonded silanols. Although none of the metallocenes are very reactive with silica as compared to titanium tetrachloride, reactivity increases in the order Cp 2TiCl 2< Cp 2ZrCl 2< Cp 2HfCl 2.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
