%0 Journal Article %T STRUCTURE, COMPOSITION, AND MECHANISM OF ACTION OF HETEROGENEOUS ZIEGLER-NATTA CATALYSTS IN PROPYLENE POLYMERIZATION (REVIEW) %A Muravlev, D.V. %A Muravlev, D.V. %A Sazonov, O.O. %A , .. %K POLYPROPYLENE, HETEROGENEOUS ZIEGLER-NATTA CATALYSTS, ACTIVE SITES, POLYMERIZATION MECHANISM, STEREOSPECIFICITY %J Herald of Technological University %D 2026 %N 29 %P 10 %I Kazan National Research Technological University