Investigation of the phase composition of an SA-1N ammonia-synthesis catalyst by the local x-ray spectral analysis method

Journal Article · Thu Jan 01 04:00:00 UTC 1976 · Kinet. Catal. (USSR) (Engl. Transl.); (United States)

OSTI ID:7228272

Saprykina, T V; Rabina, P D; Chudinov, M G; Alekseev, A M; Kuznetsov, L D

The local x-ray spectral analysis method was used to investigate the phase composition and chemical composition of the oxidized and reduced phases of an industrial iron catalyst for the synthesis of ammonia, SA--1N, promoted by oxides of Al, K, Ca, Mg, and V. The formulas of the minerals forming the oxidized catalyst were determined. Migration paths of the promoting components during catalytic reduction were found. It was established that differences in the activity of individual samples are caused by a nonuniform chemical composition of the principal working phase. This is caused by an instability in the condition of industrial catalyst production.

• Research Organization: State Scientific-Research Inst. of the Nitrogen Industry and Organic Synthesis Products, Moscow
• OSTI ID: 7228272
• Journal Information: Kinet. Catal. (USSR) (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (USSR) (Engl. Transl.); (United States) Vol. 17:3; ISSN KICAA
• Country of Publication: United States
• Language: English

Related Subjects

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400103 -- Radiometric & Radiochemical Procedures-- (-1987)
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AMMONIA
CALCIUM COMPOUNDS
CALCIUM OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
HYDRIDES
HYDROGEN COMPOUNDS
IRON COMPOUNDS
IRON ORES
IRON OXIDES
KINETICS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MAGNETITE
MINERALS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORES
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
PROMOTERS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SPECTRA
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM OXIDES
X-RAY SPECTRA