Abstract: A process for preparing a catalyst material, includes the steps of: (a) providing a support material having surface hydroxyl (OH) groups, wherein the support material is ceria (CeO2), zirconia (ZrO2) or a combination of thereof; (b) reacting the support material having surface hydroxyl (OH) groups of step (a) with a precursor containing two transition metal atoms, each chosen independently from the group consisting of: W, Mo, Cr, Ta, Nb, V, Mn; (c) calcining the product obtained in step (b) in order to provide a catalyst material showing dual site surface species containing pairs of transition metal atoms derived from the precursor that are present in oxide form on the support material. Additionally, a catalyst material is obtained by the process set out above, and the catalyst material is used as an ammonia selective catalytic reduction (NH3-SCR) catalyst for nitrogen oxides (NOx) reduction.

Abstract: A process for preparing a catalyst material, includes: (a) providing a support material having surface hydroxyl (OH) groups, the support material is ceria (CeO2), zirconia (ZrO2) or a combination, and the support material contains between 0.3 and 2.0 mmol OH groups/g of the support material; (b) reacting the support material with at least one of: (b1) a compound containing at least one alkoxy or phenoxy group bound though its oxygen atom to a metal element from Group 5 (V, Nb, Ta) or Group 6 (Cr, Mo, W); (b2) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element from Group 5 or 6; (b3) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element which is copper (Cu); and (c) calcining the product obtained in step (b).

Abstract: A process for preparing a catalyst material, includes: (a) providing a support material having surface hydroxyl (OH) groups, the support material is ceria (CeO2), zirconia (ZrO2) or a combination, and the support material contains between 0.3 and 2.0 mmol OH groups/g of the support material; (b) reacting the support material with at least one of: (b1) a compound containing at least one alkoxy or phenoxy group bound though its oxygen atom to a metal element from Group 5 (V, Nb, Ta) or Group 6 (Cr, Mo, W); (b2) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element from Group 5 or 6; (b3) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element which is copper (Cu); and (c) calcining the product obtained in step (b).

Abstract: A process for preparing a catalyst material, includes the steps of: (a) providing a support material having surface hydroxyl (OH) groups, wherein the support material is ceria (CeO2), zirconia (ZrO2) or a combination of thereof; (b) reacting the support material having surface hydroxyl (OH) groups of step (a) with a precursor containing two transition metal atoms, each chosen independently from the group consisting of: W, Mo, Cr, Ta, Nb, V, Mn; (c) calcining the product obtained in step (b) in order to provide a catalyst material showing dual site surface species containing pairs of transition metal atoms derived from the precursor that are present in oxide form on the support material. Additionally, a catalyst material is obtained by the process set out above, and the catalyst material is used as an ammonia selective catalytic reduction (NH3-SCR) catalyst for nitrogen oxides (NOx) reduction.

Abstract: Embodiments of the present disclosure describe a catalyst and/or a precatalyst, in particular a single site catalyst and/or a single site precatalyst, for the oxidation and/or ammoxidation of olefins to produce aldehydes and/or nitriles, methods of preparing a corresponding catalyst and/or precatalyst, in particular single site catalyst and/or single site precatalyst, and methods of using said catalyst and/or precatalyst, in particular said single site catalyst and/or single site precatalyst, to produce aldehydes and/or nitriles.

Abstract: The disclosure relates to a process for the dimerization of conjugated diene compounds by a heterogeneous catalytic process using a supported palladium catalyst in the presence of at least one palladium activator and at least one palladium coordinating agent.

Abstract: The disclosure relates to a selective head-to-head dimerization of conjugated diene compounds by a catalytic process in a reaction medium without solvent or with solvent comprising hydrocarbons, in the presence of a specific additive of the phenol type.

Abstract: The disclosure relates to a process for obtaining alpha-olefins by heterogeneous catalytic ethenolysis of optionally-functionalized unsaturated, in particular mono-unsaturated, olefins. The disclosure also relates to new supported catalysts that can be used in the process and to a method for preparing the supported catalysts.

Abstract: The disclosure relates to a selective head-to-head dimerization of conjugated diene compounds by a catalytic process in a reaction medium without solvent or with solvent comprising hydrocarbons, in the presence of a specific additive of the phenol type.

Abstract: The invention relates to a porous heterogeneous catalyst material comprising frameworks of inorganic cornerstones connected by organic bridges, characterized in that as organic bridges are used ligands having a complexed catalytically active metal. The metals are preferably palladium and platinum. The ligands preferably contain nitrogen donor groups for complexing the catalytically active metal and carboxylate groups connecting to the inorganic cornerstones.