Abstract:
The invention relates to a method for producing composites comprising aluminium oxide and cerium/zirconium mixed oxides, hereinafter referred to as Al/Ce/Zr oxide composite(s), using boehmite and soluble cerium/zirconium salts. Al/Ce/Zr oxide composites produced in such a manner have an increased thermal stability.
Abstract:
Catalytic process for the at least partial conversion of a gaseous mixture containing carbon monoxide and hydrogen into a mixture of hydrocarbons, comprising a step of bringing said gaseous mixture into contact with a solid catalyst, said solid catalyst comprising - a porous support comprising a composite material comprising SiC and a titanium carbide (composite referred to as "SiC/TiC") and/or a titanium oxide (composite referred to as "SiC/TiO 2 "), and - an active phase. The support may be prepared in the form of grains, beads, or extrudates, or in the form of cylinders or sheets of cellular foam. Its molar content of titanium with respect to the molar sum Si + Ti is advantageously between 0.5% and 15%.
Abstract:
To provide a method for producing a conjugated diolefin that can suppress reaction byproducts with high boiling point from remaining in steps following a quenching step by a quenching tower, and a method for producing a conjugated diolefin (e.g., 1,3-butadiene) that can be used as a raw material for synthetic rubber, resin and the like, even when using an industrial grade mixed hydrocarbon that may not necessarily have a high purity as a raw material to produce the conjugated diolefin (e.g., butadiene), provided is a method for producing a conjugated diolefin, which includes a step of producing a product gas by reaction containing a conjugated diolefin by feeding a hydrocarbon containing a monoolefin having 4 or more carbon atoms and oxygen to a reactor accommodated with a catalyst which comprises a metal oxide and a carrier, and a step of sending the product gas by reaction to a quenching tower and washing with a quenching agent, wherein an organic amine aqueous solution is used as the quenching agent.
Abstract:
The present invention relates to a photocatalyst for the generation of diatomic hydrogen from a hydrogen containing precursor under the influence of actinic radiation comprising a semiconductor support and a gold and palladium alloy on said semiconductor support. The present invention further relates to a method for generating diatomic hydrogen by photolysis and a photolysis system.
Abstract:
An autothermal reforming catalytic structure for generating hydrogen gas from liquid hydrocarbons, steam and an oxygen source. The autothermal reforming catalytic structure includes a support structure and nanosized mixed metal oxide particles dispersed homogenously throughout the support structure.
Abstract:
A CO 2 reforming catalyst may include at least one catalyst metal supported in a porous carrier. The at least one catalyst metal may include a transition metal (e.g., Ni, Co, Cr, Mn, Mo, Ag, Cu, Zn, and/or Pd). Each particle of the at least one catalyst metal may be bound with the porous carrier in a form of an alloy. The porous carrier may form a rod-shaped protruding portion around the catalyst metal particle.
Abstract:
Disclosed is a hydrorefining catalyst produced by placing a carrier into a steeping liquor for steeping, then aging, drying and activating. The catalyst contains the carrier, Mo and Co, characterized in that, based on 100 wt% of the catalyst, the catalyst contains 5-25% of molybdenum oxide, 1-6% of cobalt oxide, 0-15% of tungsten oxide, 0-4% of nickel oxide and 0-4.5% of alkali metal oxides, the pore volume of the catalyst is 0.30-0.85ml/g, and the specific surface area is 110-380m 2 /g. A compounded solvent for producing the catalyst contains simultaneously ammonia and polyamine complexing agent. The catalyst has good hydrogenation activity, high selectivity, long running time and excellent antiscorching characteristics.
Abstract:
An exhaust gas-purifying catalyst 1 which offers high exhaust gas purification performance is achieved. The exhaust gas-purifying catalyst 1 includes a first oxide particle 10 with an oxygen storage capacity, one or more second oxide particles 20 partially or entirely covering a surface of the first oxide particle 10 and having an oxygen storage capacity lower than that of the first oxide particle 10, an average particle diameter D av of the one or more second oxide particles 20 being smaller than that of the first oxide particle 10, and precious metal particles 30 supported on at least one of the second oxide particles 20.