Reaction of vanadium pentoxide with sulfur dioxide

Journal Article · Wed Jan 20 04:00:00 EST 1982 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6786748

Gushchina, G I; Kostin, L P

As is known pure vanadium pentoxide exhibits weak catalytic activity in the oxidation of SO/sub 2/. The data obtained as a result of studying V/sub 2/O/sub 5/ in an atmosphere of SO/sub 2/ are very contradictory. Boreskov and Pligunov determined that vanadium pentoxide does not change its composition and that V/sub 2/O/sub 5/ is not formed. Weychert and Leyko, who studied the change in the chemical composition of pure V/sub 2/O/sub 5/ in the presence of sulfur dioxide and during oxidation of SO/sub 2/, observed that the degree of conversion of vanadium pentoxide to vanadyl sulfate increases as the temperature increases to a specific limit, after which VOSO/sub 4/ decomposes. Gravimetric and x-ray diffraction investigations of the reduction of vanadium pentoxide by gaseous SO/sub 2/ at 350-600/sup 0/C indicated the successive formation of 15 compounds with the general formula V/sub n/O/sub 2n+1/, where n = 2-36 and V/sub 2/O/sub 4/. To obtain information on the mechanism of action of molten sulfate catalysts for elucidation of the chemical processes occurring in the M/sub 2/SO/sub 4/-V/sub 2/O/sub 5/-SO/sub 2/-O/sub 2/ system (M is K or Na), we investigated V/sub 2/O/sub 5/ in an atmosphere of SO/sub 2/ and a mixture of SO/sub 2/ with air by thermoanalytical, thermogravimetric, IR spectrographic, and chemical methods of analysis.

• Research Organization: Perm Pharmaceutical Inst., USSR
• OSTI ID: 6786748
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 54:8; ISSN JAPUA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ATMOSPHERES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DATA
ELEMENTS
EXPERIMENTAL DATA
GRAVIMETRIC ANALYSIS
HIGH TEMPERATURE
INFORMATION
METALS
MOLTEN SALTS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SALTS
SPECTRA
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM
VANADIUM COMPOUNDS
VANADIUM OXIDES
YIELDS