초록 ▼

A method is provided for oxidizing gases such as, for example, CO, aldehydes having carbon atoms in the range 1 to 5 (e.g. formaldehyde), ketones having carbon atoms in the range 3 to 5, and alcohols having carbon atoms in the range 1 to 5, wherein the gas at a relative humidity in the range 0 to 10

A method is provided for oxidizing gases such as, for example, CO, aldehydes having carbon atoms in the range 1 to 5 (e.g. formaldehyde), ketones having carbon atoms in the range 3 to 5, and alcohols having carbon atoms in the range 1 to 5, wherein the gas at a relative humidity in the range 0 to 100% and an input temperature in the range -50°to 150°C. is contacted with a catalyst assembly comprising (a) a hydrophobic support having a surface area in the range 50 to 1,500 m2/g and selected from the group consisting of silicalite, silylated silica, and styrene divinylbenzene polymers, and, on said support (b) a catalytically active metal selected from the group consisting of chromium, molybdenum, tungsten, manganese, rhenium, iron, ruthenium, osmium, cobalt, rhodium, platinum, iridium, nickel, copper and silver, said metal being present in an amount in the range 0.1 to 22 wt % of the total weight of the catalyst assembly. The catalyst assemblies used are generally catalytically active in the presence of liquid water and water vapor for longer periods than known catalyst assemblies and function at ambient temperatures.

대표청구항 ▼

A method of oxidizing a gaseous substance selected from the group consisting of carbon monoxide, ethanol, methanol, 2-propanone and formaldehyde in a feed gas, which process comprises passing such gaseous substance and oxygen at an input temperature of -50°to 150°C., in which the gaseous substance i

A method of oxidizing a gaseous substance selected from the group consisting of carbon monoxide, ethanol, methanol, 2-propanone and formaldehyde in a feed gas, which process comprises passing such gaseous substance and oxygen at an input temperature of -50°to 150°C., in which the gaseous substance is present as less than 2% of the feed gas, and the balance of the feed gas is oxygen and gases which do not inhibit oxidation of the said gaseous substance under the reaction conditions; into contact with (a) a hydrophobic, porous catalyst having a specific surface area of from 200 to 600 m2/g support, formed of porous copolymerized styrene divinylbenzene, and (b) a catalytically active metal on the support, the catalytically active metal being selected from the group consisting of chromium, molybdenum, tungsten, manganese, rhenium, iron, ruthenium, osmium, cobalt, rhodium, iridium, nickel, palladium, platinum, copper and silver, the amount of catalytically active metal being in the range of 0-1 to 22 wt % of the total weight of the support and catalytically active metal.