Metallopolymers composed of polymers and catalytically active diiron-disulfide ([2Fe-2S]) complexes are described herein. [FeFe]-hydrogenase mimics have been synthesized and used to initiate polymerization of various monomers to generate metallopolymers containing active [2Fe-2S] sites which serve as catalysts for a hydrogen evolution reaction (HER). Vinylic monomers with polar groups provided water solubility relevant for large scale hydrogen production, leveraging the supramolecular architecture to improve catalysis. Metallopolymeric electrocatalysts displayed high turnover frequency and low overpotential in aqueous media as well as aerobic stability. Metallopolymeric photocatalysts incorporated P3HT ligands to serve as a photosensitizer to promote photoinduced electron transfer to the active complex.

The present invention relates to a formate production method including: a first step of producing a formate by causing a reaction between carbon dioxide and hydrogen in a solution containing a solvent, a catalyst dissolved in the solvent, and a metal salt or an organic salt; and a second step of separating, by a separation membrane, the catalyst from a reaction solution obtained in the first step, in which the catalyst contains at least one metal element selected from the group consisting of metal elements belonging to Group 8, Group 9, and Group 10 of a periodic table.

The present invention relates to a metal complex compound which are prepared in the form of a metal nanostructure having various stereo structures and thus can be used as a catalyst or the like having an excellent activity in preparing a polyalkylene carbonate resin and the like, and a metal nanostructure and a catalyst composition comprising the same. The metal complex compound comprises a plurality of linear inorganic coordination polymer chains having a form in which an oxalic acid is coordinated and linked to a transition metal and the plurality of polymer chains are linked to each other via a predetermined neutral ligand.

A dry formulation obtained by desiccation of an emulsion comprises at least one surfactant, at least one lipophilic compound, and at least one metal catalyst. The dry formulation may be used to carry out a catalysed reaction in an aqueous medium. The dry formulation has a water content of less than (10) wt% relative to the total weight of the dry formulation, and wherein: - the at least one surfactant is selected from the group comprising dendrimers of Dendri-TAC type, oligomers of F,TACn or H,TACn type, TPGS 1000, TPGS 750 M, surfactants derived from sugars and/or amino acids, and combinations thereof; - the at least one lipophilic compound is selected from the group comprising lipids, hydrophobic complexing agents and combinations thereof; and - the metal catalyst comprises a metal selected from Groups (3) to (12) of the Periodic Table.

In one embodiment, the present application discloses a catalyst composition comprising: a) a reaction solvent or a reaction medium; b) organometallic nanoparticles comprising: i) a nanoparticle (NP) catalyst, prepared by a reduction of an iron salt in an organic solvent, wherein the catalyst comprises at least one other metal selected from the group consisting of Pd, Pt, Au, Ni, Co, Cu, Mn, Rh, Ir, Ru and Os or mixtures thereof; c) a ligand; and d) a surfactant; wherein the metal or mixtures thereof is present in less than or equal to 50,000 ppm relative to the iron salt.

Surface hydroxyl groups on porous and nonporous metal oxides, such as silica gel and alumina, were metalated with catalyst precursors, such as complexes of earth abundant metals (e.g., Fe, Co, Cr, Ni, Cu, Mn and Mg). The metalated metal oxide catalysts provide a versatile family of recyclable and reusable single-site solid catalysts for catalyzing a variety of organic transformations. The catalysts can also be integrated into a flow reactor or a supercritical fluid reactor.

Process for producing alpha olefins comprising contacting ethylene, a zirconium based catalyst system comprising, a hydrocarbylmetal compound, a chain transfer agent, and optionally an organic reaction medium. Chain transfer agents which can be utilized include a) hydrogen, b) a compound comprising a hydrogen silicon bond, a compound having a hydrogen sulfur bond, a compound having a hydrogen phosphorus bond, or c) a transition metal compound chain transfer agent.

A metal organic framework comprising zinc (II) ions and second metal ions, such as iron (II) ions, cobalt (II) ions, and copper (II) ions as nodes or clusters and coordinated 1,3,5-benzenetricarboxylic acid struts or linkers between them forming a porous coordination network in the form of polyhedral crystals that are isostructural to HKUST-1. Transmetallation processes for producing the metal organic frameworks, as well as methods for applications of the metal organic frameworks as catalysts, specifically catalysts for the oxidation of cyclic hydrocarbons, such as toluene, cyclohexane, and methylcyclohexane.

The present invention provides a catalyst system capable of catalyzing the carbonylation of an ethylenically unsaturated compound, which system is obtainable by combining: a) a metal of Group VIB or Group VIIIB or a compound thereof, b) a bidentate phosphine, arsine or stibine ligand, and c) an acid,
wherein the ligand is present in at least a 2:1 molar excess compared to the metal or the metal in the metal compound, and that the acid is present in at least a 2:1 molar excess compared to the ligand, a process for the carbonylation of an ethylenically unsaturated compound, a reaction medium, and use of the system.

Disclosed herein is the use of manganese, iron, cobalt, or nickel complexes containing tridentate pyridine di-imine ligands as hydrosilylation catalysts. These complexes are effective for efficiently catalyzing hydrosilylation reactions, as well as offering improved selectivity and yield over existing catalyst systems.