METHOD OF PREPARING N-BUTANE-INTO-ISOBUTANE ISOMERIZATION CATALYST

FIELD: petrochemical process catalysts. ^ SUBSTANCE: catalyst is prepared by precipitation of zirconium hydroxide by ammonium hydroxide from zyrconyl nitrate solution at constant pH 8.3-8.9, separation of precipitated hydroxide by filtration, drying, promotion with iron nitrate, drying, sulfatation...

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Main Authors SANNIKOV A.L, KOLESNIKOVA S.M, KUZNETSOVA L.I, OBUKHOV JA.V, DRUZHININ O.A, KUZNETSOV P.N, TVERDOKHLEBOV V.P
Format Patent
LanguageEnglish
Russian
Published 20.09.2004
Edition7
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:FIELD: petrochemical process catalysts. ^ SUBSTANCE: catalyst is prepared by precipitation of zirconium hydroxide by ammonium hydroxide from zyrconyl nitrate solution at constant pH 8.3-8.9, separation of precipitated hydroxide by filtration, drying, promotion with iron nitrate, drying, sulfatation with sulfuric acid, drying of sulfated hydroxide, and calcination at 600-700. Constancy of pH in precipitation stage is achieved by gradually and simultaneously adding to precipitation vessel 15% zyrconyl nitrate solution and 12.5% ammonium hydroxide. Catalyst contains zirconium oxide promoted with 0.7-1.5% iron cations and 3.0-9.7% of sulfate anions. ^ EFFECT: increased activity of catalyst and yield of isobutene, and eliminated washing of zirconium hydroxide to remove anions. ^ 3 cl, 1 tbl, 12 ex
Bibliography:Application Number: RU20020135058