Abstract: A vanadium oxide catalyst supported on a cerium oxide and zirconium oxide composite core is described. The catalyst comprises 0.1-3 wt % vanadium oxide relative to the total catalyst weight, and the catalyst is in the form of microparticles having diameters of 5-80 ?m. A method using a wetness impregnation technique to produce the catalyst is described. The use of the catalyst in the partial oxidation of methanol to produce formaldehyde is specified, along with the catalyst's stability for reaction periods of 50 or more hours. A method of regenerating the catalyst for multiple reactions is also described.

Abstract: A method of producing dimethyl ether involving contacting methanol with a catalyst in the presence of oxygen in a reactor to form the dimethyl ether. The catalyst comprises manganese on a cerium oxide catalyst support, wherein a weight ratio of manganese to the cerium oxide catalyst support is in the range of 0.005 to 0.5. Further, a method of manufacturing the catalyst, including mixing cerium oxide (CeO2) with a solution comprising manganese salt and a solvent, evaporating the solvent, followed by drying and calcining to form a catalyst which comprises manganese on a cerium oxide catalyst support, wherein a weight ratio of manganese to the cerium oxide catalyst support is in the range of 0.005 to 0.5.

Abstract: A catalyst of vanadium oxide supported on cerium oxide and zirconium oxide is specified. The catalyst comprises 0.1-10 wt % vanadium oxide relative to the total catalyst weight, and the catalyst is in the form of microparticles. A method using a wetness impregnation technique to produce the catalyst is described. The use of the catalyst in the oxidative dehydration of methanol to produce dimethyl ether is specified, along with the catalyst's stability for reaction periods of 50 or more hours.

Abstract: A method of producing dimethyl ether involving contacting methanol with a catalyst in the presence of oxygen in a reactor to form the dimethyl ether. The catalyst comprises manganese on a cerium oxide catalyst support, wherein a weight ratio of manganese to the cerium oxide catalyst support is in the range of 0.005 to 0.5. Further, a method of manufacturing the catalyst, including mixing cerium oxide (CeO2) with a solution comprising manganese salt and a solvent, evaporating the solvent, followed by drying and calcining to form a catalyst which comprises manganese on a cerium oxide catalyst support, wherein a weight ratio of manganese to the cerium oxide catalyst support is in the range of 0.005 to 0.5.

Abstract: The invention relates to a catalyst composition comprising (a) a metal M selected from the group consisting of platinum (Pt), palladium (Pd), rhodium (Rh), rhenium (Re), ruthenium (Ru) and iridium (Ir), (b) tin (Sn), (c) zinc (Zn), (d) alkaline earth metal and (e) a porous metal oxide catalyst support, wherein the amount of each of elements (a), (b) and (d) is independently chosen in the range of from 0.1 to 5 wt. % based on the porous metal oxide catalyst support and wherein the amount of element (c) is chosen in the range of from 0.1 to 2 wt. % based on the porous metal oxide catalyst support. Furthermore, the invention also relates to a process for the preparation of said catalyst composition and its use in non-oxidative dehydrogenation of an alkane, preferably propane.

Abstract: The invention relates to a catalyst composition comprising (a) a metal M selected from the group consisting of platinum (Pt), palladium (Pd), rhodium (Rh), rhenium (Re), ruthenium (Ru) and iridium (Ir), (b) tin (Sn), (c) zinc (Zn), (d) alkaline earth metal and (e) a porous metal oxide catalyst support, wherein the amount of each of elements (a), (b) and (d) is independently chosen in the range of from 0.1 to 5 wt. % based on the porous metal oxide catalyst support and wherein the amount of element (c) is chosen in the range of from 0.1 to 2 wt. % based on the porous metal oxide catalyst support. Furthermore, the invention also relates to a process for the preparation of said catalyst composition and its use in non-oxidative dehydrogenation of an alkane, preferably propane.

Abstract: The invention relates to a process of oxydehydrogenating an alkyl-substituted aromatic hydrocarbon starting compound into the corresponding alkenyl-substituted aromatic hydrocarbon product, respectively, which process comprises a step of contacting the starting compound and an oxidant at dehydrogenating conditions, in the presence of a boria-alumina catalyst, characterized in that the boria-alumina catalyst has been prepared by a co-precipitation method. The co-precipitation method comprises the steps of preparing a solution of aluminium salt in an organic medium, followed by adding to this solution a boron compound and then adding ammonia gas to the mixture obtained in previous step to form a precipitate and/or a gel. This process enables oxydehydrogenation of ethyl-benzene to styrene with high selectivity.