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catalyst jemte seen to framstella same as even seen to carry forbrenning in nervaro of nemnda catalyst.
catalyst jemte seen to framstella same as even seen to carry forbrenning in nervaro of nemnda catalyst.
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机译:甚至在弗兰斯特氏菌中,neemda催化剂的神经质中也有变质。
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摘要
The temperature stability of platinum-alumina catalysts is increased by adding to the alumina metal oxide stabilising components, specifically a) chromium oxide and/or tungsten oxide together with at least one oxide of a metal of the group IVB or b) an oxide of a material of the rare earths and at least one metal of the group IVB or c) an oxide of a metal of the rare earths and chromium oxide and/or tungsten oxide or d) an oxide of a metal of the rare earths, chromium oxide and/or tungsten oxide together with at least one oxide of the group IVB or e) an oxide of a metal of the rare earths, chromium oxide and/or tungsten oxide and additionally one or more oxides of calcium, strontium, barium, silicon and tin. For the purpose of the preparation, an intimate mixture of alumina or alumina-forming aluminium compound and the corresponding metal compounds which form metal oxides upon calcination, are calcined at a temperature of at least 850 DEG C, or 500 DEG C in the case of e), respectively, and a catalytic amount of platinum is intercalated. The stabilised alumina after calcining at 1200 DEG C for 2 hours has a surface of 20 m2/g. Said platinum-alumina catalysts are particularly suitable for the combustion of carbon-containing fuels.
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