The invention relates to heterogeneous catalysts comprising an organo-ruthenium complex immobilized to an aluminum-modified inorganic oxide by a chemical bond between a tetra-coordinated aluminum atom on a surface of the aluminum-modified inorganic oxide and an amino or imino nitrogen of the organo-ruthenium complex, methods of preparing the heterogeneous catalysts including immobilizing the organo-ruthenium complex to a tetra-coordinated aluminum atom on a surface of an inorganic oxide by reacting an amino or imino nitrogen of the organo-ruthenium complex and an aluminum-modified inorganic oxide, followed by a defined heat treatment, as well as methods for producing hydrogen from formic acid using the heterogeneous catalysts.

Provided herein are transition metal complexes that are useful in the acceptorless dehydrogenation of various substrates, including alkanes. Also provided are methods of dehydrogenating substrates to provide unsaturated products such as olefins.

Embodiments of the present disclosure provide for Rh(I) catalysts, methods of making alkenyl substituted arenes (e.g., allyl arene, vinyl arene, and the like), methods of making alkyl substituted arenes, and the like.

This invention provides a reversible hydrogen loading and discharging system and a reversible method for loading and discharging hydrogen. The system and the methods of this invention comprise ethylene glycol as a liquid organic hydrogen carrier and at least one transition metal. By reacting ethylene glycol with at least one transition metal; at least one hydrogen molecule and at least one oligoester of ethylene glycol are formed (hydrogen releasing)⋅, and by reacting at least one oligoester of ethylene glycol with at least one transition metal and at least one hydrogen molecule, at least one ethylene glycol is formed (hydrogen loading).

The present disclosure relates to new metal complexes, including derivatives thereof, methods of making the metal complexes, and uses thereof, including uses, for example, as photosensitizers and as photocatalysts. In an embodiment, a metal complex having the structure of Formula (I): a salt, hydrate, solvate, tautomer, optical isomer, or combination thereof.

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The present invention relates to a method for preparing a cocatalyst compound using an anhydrous hydrocarbon solvent, and a cocatalyst compound prepared thereby.

Embodiments of the present disclosure provide for Rh(I) catalysts, methods of making alkenyl substituted arenes (e.g., allyl arene, vinyl arene, and the like), methods of making alkyl substituted arenes, and the like.

The present invention relates to the preparation of novel nickel complexes containing iminopyrrolyl-type ligands, having the general molecular structure (I), and to their use as active catalysts in the polymerisation reaction of ethylene to hyperbranched polyethylene. The structure of the ligand precursor is such that it allows the occurrence of a cyclometallation reaction by the activation of a C—H bond, in the coordination reaction to the metal centre, generating a C,N,N′-tridentate complex.

Disclosed are N-heterocyclic carbene (NHC) and 4-pyridinol-derived pincer ligands and metal complexes containing these ligands. These compounds can be used to photocatalyticaly reduce CO.sub.2 to CO.

Embodiments include a system that may include a reactor including a reaction zone and a gas release zone separated by a selectively permeable membrane, wherein the selectively permeable membrane permits hydrogen to pass through the membrane and substantially blocks a substrate and its dehydrogenative coupling product from passing through the membrane. Embodiments further include a method of producing a dehydrogenative coupling product, wherein the method may include exposing a substrate to a catalyst in a reaction zone of a reactor; coupling the substrate to form the dehydrogenative coupling product and hydrogen; and separating the hydrogen from the dehydrogenative coupling product using a selectively permeable membrane and passing the hydrogen to a gas release zone of the reactor.