Published July 5, 2023 | Version v1
Preprint Open

Supported ionic liquids for effective ruthenium olefin metathesis

  • 1. Faculty of Chemistry, Silesian University of Technology, Bolesława Krzywoustego 4, 44-100 Gliwice, Poland
  • 2. Institute for Engineering of Polymer Materials and Dyes, Lukasiewicz Research Network, Chorzowska 50A, 44-100 Gliwice, Poland

Description

Supported olefin metathesis catalysts have attracted considerable interest for over two decades, regarding their facile separation, reusability and decreased product contamination. In this study two strategies toward synthesis of heterogeneous ruthenium-catalyst were explored using supported ionic liquid phase (SILP) and supported ionic liquid-like phase (SILLP) with multi-walled carbon nanotubes (MWCNTs) as a support. The structure of ionic liquids used for the construction of catalysts was varied regarding length of alkyl chain and anion in terms of providing influence on catalytic activity and stability as well as reaction product contamination. The activity of prepared catalysts was tested in ring-closing metathesis (RCM). The Ru-based SILLP catalyst demonstrated high performance (conversions >90 % in five reaction cycles), compared to SILP and Ru@MWCNTs catalyst synthesized using unmodified MWCNTs, additionally decreasing the product contamination with Ru (14 ppm).

Files

Files (3.5 MB)

Name Size Download all
md5:72975c67fee21f9f850149bb4a99860b
1.0 MB Download
md5:f25c7bbd58f426e1e91169cacb613c0f
2.5 MB Download

Additional details

Funding

National Science Centre
Projektowalne ciekłe związki kompleksowe metali jako katalizatory modelowych procesów chemicznych i elektrochemicznych UMO-2020/39/B/ST8/00693