Controlling the activity of an immobilised molecular catalyst by Lewis acidity tuning of the support
نویسندگان
چکیده
The performance profile of a supported metallocene catalyst in slurry-phase ethylene polymerisation can be significantly enhanced by tuning the chemical composition support. By employing supports derived from zinc-containing layered double hydroxides (LDHs), slurry phase productivity (EBI)ZrCl2 (EBI = rac-ethylenebis(indenyl)) quadrupled relative to magnesium-containing Productivity increases approximately linearly with zinc content LDH before reaching plateau; our experiments suggest this system is related overall Lewis acidity support surface. We have found that iron-containing similar also result enhancements, demonstrating general nature phenomena.
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ژورنال
عنوان ژورنال: Journal of Catalysis
سال: 2021
ISSN: ['0021-9517', '1090-2694']
DOI: https://doi.org/10.1016/j.jcat.2021.08.019