An alkyl tin compound having an alkyl group bonded to a tin atom, wherein the alkyl group is a branched alkyl or cyclic group-substituted alkyl group, the branched alkyl group being an alkyl group branched at at least one carbon atom of the first to third carbon atoms counting from the tin atom, and the cyclic group-substituted alkyl group being an alkyl group having a cyclic group bonded at at least one carbon atom of the first to third carbon atoms counting from the tin atom.

Described herein are processes for hydroisomerising an unconventional feedstock using a hydroisomerisation catalyst comprising zeolite SSZ-91, zeolite SSZ-32, or zeolite SSZ-32x to provide a diesel fuel.

The present invention relates to a catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support containing a mixed oxide phase containing cobalt and/or nickel, said catalyst has been prepared by introducing at least one organic compound of the family of carboxyanhydrides. The invention also relates to the process for the preparation thereof, and to the use thereof in the field of Fischer-Tropsch synthesis processes.

The invention relates to a method for producing a formate, the method including a first step of reacting hydrogen with carbon dioxide, a hydrogen carbonate or a carbonate using a catalyst in the presence of a solvent to form a formate in the reaction liquid, wherein the reaction is a two-phase system in which an organic phase and an aqueous phase are present in a separated state in the solvent, and a base concentration in the reaction is 2.5 mol/L or more.

The invention relates to a method for producing a formate, the method including reacting hydrogen with carbon dioxide, a hydrogen carbonate or a carbonate using a catalyst in the presence of a solvent, wherein the reaction is a two-phase system in which an organic solvent and an aqueous solvent are present in a separated state in the solvent, and the catalyst is at least one selected from a ruthenium complex represented by the formula (1) in the specification, a tautomer or stereoisomer thereof, and a salt compound of the complex, tautomer or stereoisomer.

The present invention relates to a catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support containing a mixed oxide phase containing cobalt and/or nickel, said catalyst has been prepared by introducing at least one ether organic compound comprising not more than two ether functions and not comprising a hydroxyl group. The invention also relates to the process for the preparation thereof, and to the use thereof in the field of Fischer-Tropsch synthesis processes.

The present invention provides, inter alia, a multidentate ligand having the structure of: ##STR00001## Also provided are methods of preparing metal complexes from the multidentate ligand, and the metal complexes prepared by such methods. Further provided are catalysts comprising such metal complexes, and various uses of such catalysts.

The present invention relates to photochemical compositions comprising: a solution comprising an organic solvent, preferably selected from dimethylformamide, acetonitrile, and mixtures thereof with water, a sacrificial electron donor; a proton donor having a pKa in acetonitrile greater than or equal to 28; a photosensitizer whose reduced state has a standard redox potential more negative than 1.45 V vs SCE; and a metal porphyrin complex of formula (I) as defined in claim 1,
useful in the production of CH.sub.4 from CO.sub.2 or CO by photochemical catalysis, to a photochemical cell comprising same and to a method for producing CH.sub.4 from CO.sub.2 or CO by photochemical catalysis using same.

The present invention relates to a novel phenonthroline based pincer complexes and process for preparation thereof. The present invention also provides a one pot process for the conversion of carbon dioxide to methanol in the presence of a molecularly defined pincer-type single-site Ru-catalyst and secondary amine. Further the present invention provides the use of phenonthroline based pincer complexes for the esterification of alcohols and hydrogenation of esters under mild conditions.

The present invention relates to a catalyst containing an active cobalt phase, deposited on a support comprising alumina, silica or silica-alumina, said support containing a mixed oxide phase containing cobalt and/or nickel, said catalyst has been prepared by introducing at least one organic compound of the family of carboxyanhydrides. The invention also relates to the process for the preparation thereof, and to the use thereof in the field of Fischer-Tropsch synthesis processes.