摘要:
The present invention relates to a catalyst for removing a metal carbonyl which comprises a nickel-containing catalyst component and copper, said copper being present in an amount of 0.001 to 250% by weight in terms of metallic copper on the basis of the weight of the nickel contained in the catalyst component. The catalyst may further contain, if required, zinc oxide, a clay mineral, or a clay mineral supporting at least one element having an average particle diameter of not more than 50 nm selected from ruthenium, rhodium, iridium, platinum, gold, silver, palladium, nickel, cobalt, copper, iron, zinc, vanadium and manganese. When using the catalyst, it is possible to produce a mixed reformed gas from hydrocarbons, and remove a metal carbonyl in a reforming reaction field.
摘要:
The present invention relates to a hydrocarbon-decomposing catalyst comprising magnesium, aluminum and nickel as constitutional elements, containing silicon in an amount of 0.001 to 20% by weight (calculated as Si) based on the weight of the catalyst, and having a nickel content of 0.1 to 40% by weight (calculated as metallic nickel) based on the weight of the catalyst; and a hydrocarbon-decomposing catalyst comprising a porous carrier and a catalytically active metal carried on the carrier, said porous carrier comprising magnesium and aluminum as constitutional elements and containing silicon in an amount of 0.001 to 20% by weight (calculated as Si) based on the weight of the catalyst, and said catalytically active metal comprising fine metallic nickel particles, a content of said fine metallic nickel particles being 0.1 to 40% by weight (calculated as metallic nickel) based on the weight of the catalyst. The hydrocarbon-decomposing catalyst of the present invention is less expensive, and can exhibit an excellent catalytic activity capable of decomposing C 1 or more hydrocarbons, a good anti-coking property even under a less steam condition, a good effect of reducing an amount of ammonia by-produced even upon using nitrogen-containing hydrocarbon fuels, and a sufficient strength capable of preventing the catalyst from being crushed and broken even upon occurrence of coking inside thereof, and an excellent durability.
摘要:
There are provided black iron-based particles comprising iron/titanium composite oxide particles having a titanium element content (A) of 5 to 35% by atom based on an iron element content contained in the black iron-based particles, and a ratio of a titanium element content (B) (based on an iron element content contained in the portion dissolved) in a portion of the black iron-based particles, which is dissolved therefrom at an iron element dissolution percentage of 1% by weight, to the titanium content (A) of not less than 1.0. The black iron-based particles of the present invention are not only excellent in dispersibility, acid resistance, tinting strength and blackness, but also exhibit a less magnetization value. Also, the black paint and the rubber or resin composition of the present invention are excellent in acid resistance and blackness.
摘要:
Composite Carticles comprise white inorganic particles, a surface modifier coating layer provided on the surface of the white inorganic particles, and a dye or lake coat provided on the surface of the surface modifier coating layer. The composite particles not only exhibit excellent color-developing property and tinting strength but also suppress bleeding. They are used in paints and resin compositions.
摘要:
A purifying agent for purifying soil or ground water which comprises a water suspension containing iron composite particles comprising α-Fe and magnetite, and having an average particle diameter of 0.05 to 0.50 µm, an S content of 3500 to 10000 ppm and an A1 content of 0.10 to 1.50% by weight, and polyaspartic acid or a salt thereof. The purifying agent is capable of decomposing aliphatic organohalogen compounds or aromatic organohalogen compounds contained in the soil or ground water in an efficient, continuous and economical manner.