The present invention concerns a catalyst system in particular a catalyst system comprising Palladium (Pd), a zwitterion and/or an acid-functionalized ionic liquid, and one or more phosphine ligands, wherein the Pd catalyst can be provided by a complex precursor, such as Pd(CH3COO)2, PdCI2, Pd(CH3COCHCOCH3), Pd (CF3COO)2, Pd(PPh3)4 or Pd2(dibenzylideneacetone)3. Such catalyst systems can be used for e.g. alkoxycarbonylation reactions, carboxylation reactions, and/or in a co-polymerization reaction, e.g. in the production of methyl propionate and/or propanoic acid, optionally in processes forming methyl methacrylate and/or methacrylic acid. Catalyst systems according to the invention are suitable for reactions forming separable product and catalyst phases and supported ionic liquid phase SILP applications.
|Country||International Bureau of the World Intellectual Property Organization (WIPO)|
|Publication status||Published - 2011|
Bibliographical noteAlso published as: SG178878 (A1), KR20120057639 (A), JP2013503733 (A), EP2473277 (A1), CN102625731 (A)
Riisager, A., Fehrmann, R., Xiong, J., & Garcia-Suarez, E. J. (2011). IPC No. B01J31/02; C07C51/00. Palladium catalyst system comprising zwitterion and/or acid-functionalized ionic liquid. (Patent No. WO2011026860).