GASOLINE FRACTION REFORMING CATALYST AND A METHOD FOR PREPARATION THEREOF
FIELD: petroleum processing catalysts. ^ SUBSTANCE: invention provides gasoline fraction reforming catalyst containing 0.1-0.5% platinum, 0.1-0.4% rhenium, halogen (chorine, 0.7-1.5%, or chorine and fluorine, 0.05-0.1%), and carrier: surface compound of dehydrated aluminum monosulfatozirconate of ge...
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Sprache: | eng ; rus |
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Zusammenfassung: | FIELD: petroleum processing catalysts. ^ SUBSTANCE: invention provides gasoline fraction reforming catalyst containing 0.1-0.5% platinum, 0.1-0.4% rhenium, halogen (chorine, 0.7-1.5%, or chorine and fluorine, 0.05-0.1%), and carrier: surface compound of dehydrated aluminum monosulfatozirconate of general formula Al2O3.[ZrO(SO4)]x with weight stoichiometric coefficient x = 0.45.10-2 - 9.7.10-2 and real density 3.3±0.01 g/cm3. Catalyst preparation process comprises preparation of carrier by mixing (i) aluminum hydroxide, from which iron and sodium impurities were washed out (to 0.02%) and which has pseudoboehemite structure, with (ii) aqueous solution of monosulfatozirconic acid HZrO(SO4)OH containing organic components (formic, acetic, oxalic, and citric acids) followed by drying, molding, and calcination. Carrier is treated in two steps: first at temperature no higher than and then at temperature not below 70°C. ^ EFFECT: enabled production of reforming gasolines with octane number not below 97 points (research method) with yield not less than 86% and increased activity and selectivity of catalyst. ^ 4 cl, 2 tbl, 13 ex |
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