Media type: E-Article Title: Internal Donors in Ziegler-Natta Systems: is Reduction by AlR3 a Requirement for Donor Clean-Up? Contributor: Zaccaria, Francesco; Vittoria, Antonio; Correa, Andrea; Ehm, Christian; Budzelaar, Peter H. M.; Busico, Vincenzo; Cipullo, Roberta Published: Wiley, 2018 Published in: ChemCatChem Extent: 863-863 Language: English DOI: 10.1002/cctc.201800270 ISSN: 1867-3880 Keywords: Inorganic Chemistry ; Organic Chemistry ; Physical and Theoretical Chemistry ; Catalysis Footnote: