CATALYST AND AMMONIA CONVERSION PROCESS

FIELD: nitrogen compounds production. ^ SUBSTANCE: invention relates to catalyst and ammonia conversion process used in weak nitric acid production. Ammonia conversion catalyst represents a honeycomb-structure block catalyst based on mixed oxides depicted by general formula: ((2-x)MgO.xMeO).2-y)Al2O...

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Main Authors KRUGLJAKOV V.JU, MARCHUK A.A, ISUPOVA L.A, SADYKOV V.A, SUTORMINA E.F, ZOLOTARSKIJ I.A, KULIKOVSKAJA N.A
Format Patent
LanguageEnglish
Russian
Published 27.08.2004
Edition7
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:FIELD: nitrogen compounds production. ^ SUBSTANCE: invention relates to catalyst and ammonia conversion process used in weak nitric acid production. Ammonia conversion catalyst represents a honeycomb-structure block catalyst based on mixed oxides depicted by general formula: ((2-x)MgO.xMeO).2-y)Al2O5.Al2O3.(5+y(2-x))SiO2, where x=0-2, y=0-0.5, and Me is Mn, Fe, Co, Ni, Cu, Cr, V, or their mixtures, forming frame structure of cordierite with thermal expansion factor .10-7- 10-5 K-1 within temperature range up to 900. Catalytic conversion of ammonia involves passing gaseous reaction mixture comprising ammonia and oxygen-containing gas through double-step catalytic system formed by a variety of ways including combination with trapping platinoid gauzes and/or inert charge in the first step and claimed catalyst in the second step. ^ EFFECT: increased activity and selectivity of catalyst as well as its resistance to thermocycles. ^ 4 cl, 2 tbl, 10 ex
Bibliography:Application Number: RU20030130294