The invention provides a method for the production of a supported nickel catalyst, in which an aqueous mixture comprising an alkali metal salt plus other metal salts is sintered to form a support material. A supported nickel catalyst comprising potassium β-alumina is also provided.

The invention is related to a carbon supported catalyst comprising a carbon-comprising support with a BET surface area in a range from 400 m.sup.2/g to 2000 m.sup.2/g, a modifier comprising at least one mixed metal oxide, comprising niobium and titanium, and/or a mixture, comprising niobium oxide and titanium oxide, a catalytically active metal compound, wherein the catalytically active metal compound is platinum or an alloy comprising platinum and a second metal or an intermetallic compound comprising platinum and a second metal, the second metal being selected from the group consisting of cobalt, nickel, chromium, copper, palladium, gold, ruthenium, scandium, yttrium, lanthanum, niobium, iron, vanadium and titanium.

The invention is further related to a process for preparing the carbon supported catalyst.

Process for the production of a diene, preferably a conjugated diene, more preferably 1,3-butadiene, comprising the dehydration of at least one alkenol in the presence of at least one catalytic material comprising at least one acid catalyst based on silica (SiO.sub.2) and alumina (AI.sub.2O.sub.3), preferably a silica-alumina (SiO.sub.2-AI.sub.2O.sub.3), said catalyst having a content of alumina (AI.sub.2O.sub.3) lower than or equal to 12% by weight, preferably ranging from 0.1% by weight to 10% by weight, with respect to the total weight of the catalyst. Preferably, said alkenol can be obtained directly from biosynthesis processes, or through the catalytic dehydration of at least one diol, preferably a butanediol, more preferably 1,3-butanediol, even more preferably bio-1,3-butanediol, deriving from biosynthesis processes. Preferably, said 1,3-butadiene is bio-1,3-butadiene.

This invention relates to a catalyst for use in the preparation of acetic acid through a methanol carbonylation reaction using carbon monoxide, and particularly to a heterogeneous catalyst represented by Rh/C.sub.3N.sub.4 configured such that a complex of a rhodium compound and 3-benzoylpyridine is immobilized on a carbon nitride support.

Catalytic conversion of ketoacids is disclosed, including methods for increasing the molecular weight of ketoacids. An exemplary method includes providing in a reactor a feedstock having at least one ketoacid. The feedstock is then subjected to one or more C—C-coupling reaction(s) in the presence of a catalyst system having a first metal oxide and a second metal oxide.

Multi-metallic bulk catalysts and methods for synthesizing the same are provided. The multi-metallic bulk catalysts contain nickel, molybdenum tungsten, niobium, and optionally, titanium and/or copper. The catalysts are useful for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.

The present invention relates to a mixed oxide of aluminium, of zirconium, of cerium, of lanthanum and optionally of at least one rare-earth metal other than cerium and lanthanum that makes it possible to repair a catalyst that retains, after severe ageing, a good thermal stability and a good catalytic activity. The invention also relates to the process for preparing this mixed oxide and also to a process for treating exhaust gases from internal combustion engines using a catalyst prepared from this mixed oxide.

An apparatus for forming methane from carbon dioxide and hydrogen is described. The apparatus comprises: a dielectric barrier discharge, DBD, device arranged to generate a plasma; and a passageway having an inlet for the carbon dioxide and the hydrogen and an outlet for the methane and including therein a catalyst comprising nickel and alumina. The passageway extends, at least in part, through the DBD device wherein, in use, the carbon dioxide is exposed to the catalyst in the presence of the hydrogen in the generated plasma, thereby forming the methane from at least some of the carbon dioxide and the hydrogen. A method, a use and a catalyst are also described.

The invention provides for a method to prepare an alumina catalyst support comprising bismuth for emission control applications, to an alumina catalyst support prepared according to the method of the invention and to an alumina catalyst support comprising bismuth and having a specific crystallinity value that leads to improved technical effects.

The present invention provides a catalyst, comprising molybdenum; one or more first elements selected from a Group V, VI, VII, VIII, IX, X, and XI metal (e.g., silver, cobalt, nickel, copper, rhodium, ruthenium, iridium, palladium, niobium, and manganese); one or more second elements selected from sulfur, carbon, oxygen, phosphorus, nitrogen, and selenium; and optionally, one or more Group IA metals, wherein the molybdenum is present in an amount of 10-50 wt. % of the total amount of the one or more first elements, the molybdenum, the one or more second elements, and the Group IA metal, and methods of using said catalyst in the production of ethanol from carbon dioxide.