The present invention relates to a process for preparing an ester having formula RCOOR (I), wherein R represents a group selected from: (i) a linear or branched alkyl, containing from 1 to 20 carbon atoms, (ii) an aryl containing from 6 to 12 carbon atoms, (iii) a heterocycle with 4 to 12 carbon atoms containing at least one heteroatom selected from O, N, P and S, R represents a linear or branched alkyl containing from 1 to 12 carbon atoms, said process comprising at least a phase of reacting a reaction mixture comprising at least one aldehyde having formula RCHO (II), wherein R has the meanings defined above, and at least one alcohol having general formula ROH (III), wherein R has the meanings defined above, in the presence of at least one solid basic catalyst, at a temperature within the range of 120 C.-300 C., obtaining said ester having formula (I).

The present invention relates to a catalyst bed configuration for conversion of olefins comprising i) at least one main catalyst bed comprising a) at least one first catalyst component comprising a metathesis catalyst, and b) at least one second catalyst component comprising a catalyst for double bond isomerization, and ii) at least one catalyst pre-bed arranged upstream of the at least one main catalyst bed comprising at least one compound selected from the group of alkaline earth oxides. The at least one compound used as catalyst pre-bed and selected from the group of alkaline earth oxides is subjected to a pre-treatment before arranging said at least one compound used as catalyst pre-bed upstream of the at least one main catalyst bed, wherein the pre-treatment comprises at least one cycle comprising successive treatment in an oxidizing and reducing atmosphere.

The present invention relates to a method of preparing a catalyst for oxidative dehydrogenation. More particularly, the method of preparing a catalyst for oxidative dehydrogenation includes a first step of preparing an aqueous iron-metal precursor solution by dissolving a trivalent cation iron (Fe) precursor and a divalent cation metal (A) precursor in distilled water; a second step of obtaining a slurry of an iron-metal oxide by reacting the aqueous iron-metal precursor solution with ammonia water in a coprecipitation bath to form an iron-metal oxide (step b) and then filtering the iron-metal oxide; and a third step of heating the iron-metal oxide slurry.

In accordance with the present invention, a metal oxide catalyst, as a catalyst for oxidative dehydrogenation, having a high spinel phase structure proportion may be economically prepared by a simple process.

The present invention relates to a method of preparing a catalyst for oxidative dehydrogenation. More particularly, the method of preparing a catalyst for oxidative dehydrogenation includes a first step of preparing an aqueous iron-metal precursor solution by dissolving a trivalent cation iron (Fe) precursor and a divalent cation metal (A) precursor in distilled water; a second step of obtaining a slurry of an iron-metal oxide by reacting the aqueous iron-metal precursor solution with ammonia water in a coprecipitation bath to form an iron-metal oxide (step b) and then filtering the iron-metal oxide; and a third step of heating the iron-metal oxide slurry.

In accordance with the present invention, a metal oxide catalyst, as a catalyst for oxidative dehydrogenation, having a high spinel phase structure proportion may be economically prepared by a simple process.

A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising rubidium, bismuth, cerium, molybdenum, iron and other promoters, with a desirable composition.

A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising rubidium, bismuth, cerium, molybdenum, iron and other promoters, with a desirable composition.

A process of oxidizing an alcohol for the production of its corresponding carbonyl compounds is disclosed, wherein the oxidation is performed with oxygen or gases containing oxygen in the presence of a catalyst comprising at least a gold compound and a copper compound. Said alcohol oxidation by gaseous oxidant can achieve a high yield and selectivity with minimized degradation products or waste organic solvents.

A process of oxidizing an alcohol for the production of its corresponding carbonyl compounds is disclosed, wherein the oxidation is performed with oxygen or gases containing oxygen in the presence of a catalyst comprising at least a gold compound and a copper compound. Said alcohol oxidation by gaseous oxidant can achieve a high yield and selectivity with minimized degradation products or waste organic solvents.

Nanowires useful as heterogeneous catalysts are provided. The nanowire catalysts are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to ethylene. Related methods for use and manufacture of the same are also disclosed.

Nanowires useful as heterogeneous catalysts are provided. The nanowire catalysts are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to ethylene. Related methods for use and manufacture of the same are also disclosed.