Calorimetric investigation of the heats of chemisorption of nitrogen on an ammonia-synthesis catalyst

Journal Article · Wed Nov 01 04:00:00 EST 1978 · Kinet. Catal. (USSR) (Engl. Transl.); (United States)

OSTI ID:5818869

Ostrovskii, V E; Igranova, E G

A calorimetric determination has been made of the variation of the differential heats of nitrogen chemisorption with the nitrogen concentration in the technical SA-1 iron catalyst for ammonia synthesis. The measurements were made at 197/sup 0/C. The heat of nitrogen chemisorption was calculated from the thermal effect in the decomposition of ammonia into gaseous hydrogen and adsorbed nitrogen, with allowance being made for the fact that in the decomposition a part of the hydrogen remains on the surface in the form of adsorbed hydrogen nitride radicals. It was ascertained that as the nitrogen concentration in the catalyst increases, the heat of its chemisorption at first remains constant (30 +- 5 kcal/mole) and later diminishes to 12 kcal/mole.

• Research Organization: Physicochemical Research Inst., Moscow, USSR
• OSTI ID: 5818869
• Journal Information: Kinet. Catal. (USSR) (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (USSR) (Engl. Transl.); (United States) Vol. 19:3; ISSN KICAA
• Country of Publication: United States
• Language: English

Related Subjects

090320* -- Inorganic Hydrogen Compound Fuels-- Preparation-- (1976-1989)
10 SYNTHETIC FUELS
ADSORPTION HEAT
AMMONIA
CALORIMETRY
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMISORPTION
CRYOGENIC FLUIDS
DATA
DATA FORMS
DECOMPOSITION
ELEMENTS
ENTHALPY
EXPERIMENTAL DATA
FLUIDS
HIGH TEMPERATURE
HYDRIDES
HYDROGEN
HYDROGEN COMPOUNDS
INFORMATION
IRON
ISOLATED VALUES
METALS
NITRIDES
NITROGEN
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
NUMERICAL DATA
PHYSICAL PROPERTIES
PNICTIDES
QUANTITY RATIO
RADICALS
SEPARATION PROCESSES
SORPTION
SYNTHESIS
TEMPERATURE DEPENDENCE
TEMPERATURE EFFECTS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
YIELDS