New Insight into Titanium-Magnesium Ziegler-Natta Catalysts Using Photoluminescence Spectroscopy.

ABSTRACT: This paper presents the results of study of titanium-magnesium catalysts often used in polymerization processes, by photoluminescence spectroscopy (PL) in combination with diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The interaction of dibutyl phthalate (DBP) with MgCl₂ was studied at DBP_added/Mg = 0-1 (mol/mol). The luminescence spectra with excitation at 278 nm and the excitation spectra for main emission bands were recorded. It was shown that DBP adsorbed on magnesium chloride, both in the form of donor-acceptor complexes (D⁺A^-) and in the form of molecular complexes. At DBP_added/Mg <0.15, the formation of D⁺A^- complexes occur predominantly; with an increase in DBP_added/Mg, t

SUBMITTER: Panchenko VN 

PROVIDER: S-EPMC7577041 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature