Electronic properties of Ti sites in Ziegler–Natta catalysts
Although Ziegler–Natta (ZN) catalysts play a major role in the polyolefin market, a true
understanding of their properties at the molecular level is still missing. In particular, there is a …
understanding of their properties at the molecular level is still missing. In particular, there is a …
Atom-economical synthesis of 1, 2-bis (phosphine oxide) ethanes from calcium carbide with straightforward access to deuterium-and 13 C-labeled bidentate …
Stable and easily detectable isotopic labels provide advanced opportunities in a wide range
of chemical applications. Highly specific information can be retrieved upon analysis of …
of chemical applications. Highly specific information can be retrieved upon analysis of …
[HTML][HTML] Silica-magnesium-titanium Ziegler-Natta catalysts. Part 1: Structure of the pre-catalyst at a molecular level
In this paper, which is the first part of a more extended work, we elucidate the molecular
level structure of a highly active SiO 2-supported Ziegler-Natta precatalyst obtained by …
level structure of a highly active SiO 2-supported Ziegler-Natta precatalyst obtained by …
Spectroscopic signature and structure of the active sites in Ziegler–Natta polymerization catalysts revealed by electron paramagnetic resonance
A Ashuiev, M Humbert, S Norsic, J Blahut… - Journal of the …, 2021 - ACS Publications
Despite decades of extensive studies, the atomic-scale structure of the active sites in
heterogeneous Ziegler–Natta (ZN) catalysts, one of the most important processes of the …
heterogeneous Ziegler–Natta (ZN) catalysts, one of the most important processes of the …
Active Sites in Cr (III)‐Based Ethylene Polymerization Catalysts from Machine‐Learning‐Supported XAS and EPR Spectroscopy
A Ashuiev, A Giorgia Nobile, D Trummer… - Angewandte …, 2024 - Wiley Online Library
The ethylene polymerization Phillips catalyst has been employed for decades and is central
to the polymer industry. While Cr (III) alkyl species are proposed to be the propagating sites …
to the polymer industry. While Cr (III) alkyl species are proposed to be the propagating sites …
Molecular and supported Ti (iii)-alkyls: efficient ethylene polymerization driven by the π-character of metal–carbon bonds and back donation from a singly occupied …
While Ti (III) alkyl species are the proposed active sites in Ziegler–Natta ethylene
polymerization catalysts, the corresponding well-defined homogeneous catalysts are not …
polymerization catalysts, the corresponding well-defined homogeneous catalysts are not …
A reactive coordinatively saturated Mo (III) complex: exploiting the hemi-lability of tris (tert-butoxy) silanolate ligands
Coordinatively unsaturated Mo (III) complexes have been identified as highly reactive
species able to activate dinitrogen without the need for a sacrificial reducing agent. Here, we …
species able to activate dinitrogen without the need for a sacrificial reducing agent. Here, we …
16OSTM10: a new open-shell transition metal conformational energy database to challenge contemporary semiempirical and force field methods
A new database, 16OSTM10, containing 10 conformations for each of 16 non-multireference
realistic-size open-shell transition metal (OSTM) complexes has been developed …
realistic-size open-shell transition metal (OSTM) complexes has been developed …
On the role and applications of electron magnetic resonance techniques in surface chemistry and heterogeneous catalysis
M Chiesa, E Giamello - Catalysis Letters, 2021 - Springer
Some relevant aspects of Electron Paramagnetic Resonance (EPR) applied to the fields of
surface chemistry and heterogeneous catalysis are illustrated in this perspective paper that …
surface chemistry and heterogeneous catalysis are illustrated in this perspective paper that …
Surface Organometallic Chemistry on Zeolites: Synthesis of Group IV Metal Alkyls and Metal Hydrides on Hierarchical Mesoporous H-ZSM-5
Surface organometallic chemistry (SOMC) has mainly been devoted to the reaction of
organometallics with surfaces comprising highly divided and dehydroxylated oxides. The …
organometallics with surfaces comprising highly divided and dehydroxylated oxides. The …