The invention contemplates a method of making a catalytic material, and uses of the material. The catalytic material is made by depositing catalytic metals, such as gold or platinum, on substrate materials, such as lanthanum-doped ceria or other oxides. The catalytic metal, which comprises both crystalline and non-crystalline structures, is treated, for example with aqueous basic NaCN solution, to leach away at least some of the crystalline metallic component. The remaining noncrystalline metallic component associated with the substrate exhibits catalytic activity that is substantially similar to the catalyst as prepared. The use of the catalyst in an apparatus such as a reactor or analytic instrument is contemplated, as is the use of the catalyst in efficient, cost-effective reactions, such as removal of carbon monoxide from fuel gases, for example by performing the water gas shift reaction.

Catalyst having metal in reduced quantity and reduced cluster size

Unsaturated glycol diesters are prepared in an extremely high degree of conversion and selectivity by reacting a conjugated diene, a carboxylic acid and oxygen in the presence of a solid, active, long-lived catalyst composed of a mixture of palladium and at least one component of antimony, bismuth, selenium or tellurium supported on activated carbon, which catalyst is prepared by subjecting the mixture to reduction, treating the mixture with oxygen or an oxygen-containing gas at an elevated temperature and subjecting the treated mixture to reduction again.

Process for preparing an unsaturated ester

Carrier-bound ruthenium catalysts are used to produce alcohols by the catalytic hydrogenation of aldehydes and ketones. The problem of deactivation of the catalyst is solved by the use of a ruthenium catalyst on an oxide carrier of the series TiO2, SiO2, ZrO2, MgO, mixed oxides thereof and silicates thereof. In particular, Ru on TiO2 or SiO2 results in a long service life of the catalyst.

Method of producing alcohols by catalytic hydrogenation of aldehydes or ketones

There is disclosed a process for producing diacetoxybutane diol by hydrogenating diacetoxybutene in the presence of a hydrogenation catalyst in which the hydrogenation is carried out in two stages within predetermined temperature ranges, the temperature of the second stage is higher than that of first thereby obtaining the product in high selectivity with high conversion, and a process for producing butanediol by hydrolyzing the diacetoxybutane thus obtained in the presence of a solid acid catalyst.

Process for producing diacetoxybutanes and butanediols

A carboxylic ester is prepared by reacting a hydrocarbon selected from monoolefins having 2 to 6 carbon atoms, benzene, toluene and xylene with an aliphatic saturated carboxylic acid having 2 to 4 carbon atoms and molecular oxygen in the vapor phase in the presence of a supported solid catalyst of palladium metal, an antimony component and a carboxylic acid salt of alkali metal, alkaline earth metal, zinc, cadmium, lead or tin, with the improvement comprising: adding said antimony compound to the support of said catalyst by dipping a carrier into an aqueous solution of water-soluble antimony compound selected from the group consisting of antimonic acid, antimonates and antimony complexes of organic acids.

Process for preparing carboxylic acid esters from toluene and xylene

UNSATURATED GLYCOL DIESTERS ARE PREPARED AT HIGH REACTION VELOCITIES, HIGH DEGREES OF CONVERSION AND HIGH SELECTIVITY, BY REACTING A CONJUGATED DIENE, A CARBOXYLIC ACID AND OXYGEN, IN THE PRESENCE OF A SOLID CATALYST CONTAINING PALLADIUM, AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF ANTOMONY, BISMUTH, TELLURIUM AND SELENIUM TELLURIUM AND SELENIUM ARE PREFERRED SINCE THEY AID IN REDUCING THE QUANTITY OF PALLADIUM LOST IN THE REACTION MEDIUM

Process for preparing an unsaturated glycol diester

PURPOSE: To obtain the titled compound readily, industrially and advantageously, by reacting a conjugated diene with a carboxylic acid and molecular O 2 in the presence of a solid catalyst containing Pd and Te having higher activity and low reduction in activity and using active carbon of specific structure as a carrier. CONSTITUTION: A conjugated diene, especially butadiene is reacted with a carboxylic acid such as acetic acid and molecular O 2 in the presence of a solid catalyst containing Pd and Te supported on active carbon which has ≥0.45cc/g total pore volume of 18W100,000Å pore radius, ≥50% based on total pore volume of volume of pores with ≥3,000Å pore radius and 2.0W3.0mm pore diameter as a carrier in a reaction medium comprising ≥50wt.% carboxylic acid of raw material as a solvent preferably at 60W180°C normal pressure W several atmospheric pressure to give the aimed compound such as butanediol ester useful as an intermediate for 1,4-butanediol, a raw material for engineering plastics, elastic fibers and synthetic leather. COPYRIGHT: (C)1988,JPO&Japio

Production of unsaturated glycol diester

A method for producing an unsaturated glycol diester by reacting molecular oxygen, a carboxylic acid and a conjugated diene in the presence of a solid catalyst containing palladium and tellurium supported on a carrier, wherein an active carbon with the total pore volume of pores having radii of from 18 to 100,000 A being at least 0.45 cc/g and with the volume of pores having radii of at least 3,000 A constituting at least 50% of the total pore volume, is used as the carrier for the solid catalyst.

Method for producing an unsaturated glycol diester

PURPOSE: The vapor-phase isomerization of diacetoxybutene in the presence of a catalyst of palladium supported on activated carbon is effectively conducted by use of hydrogen chloride of bromide as a cocatalyst, further the life of the catalyst is prolonged. CONSTITUTION: The vapor-phase reversible isomerization between 1,4-diacetoxybutene-2 and 3,4-diacetoxybutene-1 is effected in the presence of a catalyst of palladium such as palladium acetate, palladium nitrate or palladium chloride supported on activated carbon and hydrogen chloride or bromide as well, preferably by 0.5W5mol% based on the diacetoxybutene. COPYRIGHT: (C)1982,JPO&Japio

Isomerization of diacetoxybutene

A method for producing monosilane and a tetraalkoxysilane by disproportionation of an alkoxysilane, which comprises contacting an alkoxysilane having the formula: wherein R is lower alkyl group and n is an integer of 1 to 3, with a catalyst selected from the group consisting of a platinum group metal, a compound of a platinum group metal, an anion exchange resin, alumina, silica alumina and zeolite containing a metal of Group la of the periodic table.

Junzo Haji

Papers

Process for preparing an unsaturated glycol diester

Production of unsaturated glycol diester

Method for producing an unsaturated glycol diester

Isomerization of diacetoxybutene

Method for producing monosilane and a tetraalkoxysilane