摘要:
The present invention provides a 12CaO.7Al2O3 compound containing an O2− ion radical and/or an O− ion radical in a high concentration of 1020 cm−3 or more. This compound can be used as an oxidization catalyst, antibacterial agent, ion conductor, or electrode material for solid-oxide fuel cells.
摘要:
Process for the regeneration of exhausted catalysts, containing one or more calcium aluminates, for steam cracking reactions, comprising treating said exhausted catalysts in a stream of water vapour at a temperature ranging from 700 to 950null C., preferably from 720 to 850null C., and at a pressure ranging from 0.5 to 2 atm.
摘要:
This invention relates to compositions resulting from the reaction, in aqueous phase, of aluminum hydroxide, of alkali metal cation hydroxide and of calcium or strontium hydroxide. The addition of such a composition to PVC resins or to olefinic resins from Ziegler catalysis prevents the degradation of these resins under the effect of light or of heat, in particular during extrusion.
摘要:
Alkoxy ethoxides, for example 2-methoxy ethoxide, of aluminum and magnesium or aluminum and calcium, are provided. These compounds are of the formula MAl.sub.2 (O--CH.sub.2 --CH.sub.2 --O--R).sub.8 wherein M is calcium or magnesium and wherein R is an alkyl of 1 to 4 carbon atoms; they are liquids at about 25.degree. C. and about 1 atmosphere of pressure and are produced by reacting aluminum and magnesium or calcium with mono-alkyl ethers of ethylene glycol. Methods for hydrolyzing the compounds to obtain oxides of the formula MgAl.sub.2 O.sub.4 and CaAl.sub.2 O.sub.4 are disclosed. For example, magnesium aluminum octa-(2 methoxy ethoxide) is produced, using ethylene glycol monomethyl ether (methyl "Cellosolve") as a reagent; the material is hydrolyzed and heated to form MgAl.sub.2 O.sub.4.
摘要翻译:提供了铝和镁或铝和钙的烷氧基乙氧基化物,例如2-甲氧基乙氧基化物。 这些化合物具有式MA1(O-CH2-CH2-O-R)8,其中M是钙或镁,其中R是1至4个碳原子的烷基; 它们在约25℃和约1大气压下是液体,并且通过使铝和镁或钙与乙二醇的单烷基醚反应来制备。 公开了水解化合物以获得式MgAl 2 O 4和CaAl 2 O 4的氧化物的方法。 例如,使用乙二醇单甲醚(甲基“Cellosolve”)作为试剂制造八(2-甲氧基乙氧化镁)镁铝; 将材料水解并加热形成MgAl 2 O 4。