摘要:
The present invention relates to a catalyst for decomposing hydrocarbons including hydrocarbons having 2 or more carbon atoms, comprising magnesium, aluminum, nickel and cobalt as constitutional elements, and further comprising ruthenium and/or palladium, wherein the metallic ruthenium and/or metallic palladium in the form of fine particles have an average particle diameter of 0.5 to 20 nm, and a content of the metallic ruthenium and/or metallic palladium is 0.05 to 5.0% by weight based on the weight of the catalyst. The catalyst of the present invention is capable of efficiently decomposing hydrocarbons including hydrocarbons having 2 or more carbon atoms (C 2 or more hydrocarbons), is less expensive, and exhibits an excellent catalytic activity for decomposition and removal of hydrocarbons, in particular, an excellent capability of decomposing propane, and an excellent anti-coking property.
摘要:
The present invention relates to a porous catalyst body for decomposing hydrocarbons, comprising a porous composite oxide comprising at least magnesium and/or calcium, and aluminum, and metallic nickel having a particle diameter of 1 to 25 nm, wherein the porous catalyst body has an average crushing strength of not less than 5 kgf and a displacement length of not less than 0.05 mm as measured by compressing the porous catalyst body under a load of 5 kgf. The porous catalyst body for decomposing hydrocarbons according to the present invention is less expensive, and has an excellent catalytic activity for decomposition and removal of hydrocarbons, an excellent anti-sulfur poisoning property, a high anti-coking property even under a low-steam condition, a crushing strength and a displacement length which are optimum for DSS operation, and an excellent durability.
摘要:
The present invention aims at providing a porous molded product comprising magnesium and aluminum which is satisfactory in both of a specific surface area and mechanical properties, can be suitably used as filters, drying agents, adsorbents, purifying agents, deodorants, carriers for catalysts, etc., includes a large amount of micropores, and has a large specific surface area and a high strength, as well as a process for producing the porous molded product. The porous molded product of the present invention comprises at least magnesium and aluminum, and having a magnesium content of 10 to 50% by weight in terms of a magnesium atom, an aluminum content of 5 to 35% by weight in terms of an aluminum atom, a pore volume of 0.01 to 0.5 cm 3 /g, an average pore diameter of not more than 300 Å and an average collapse strength of not less than 3 kg, and can be produced by molding hydrotalcite comprising at least magnesium and aluminum and then calcining the resulting molded product at a temperature of 500 to 1500°C.