Reference

Effect of the composition of vanadium-containing converter slags on their oxidation and the recovery of vanadium

Effect of the composition of vanadium-containing converter slags on their oxidation and the recovery of vanadium.Some chemicals with cas registry numbers like 1314-34-7 and 1308-38-9 are also used. Vatolin, N. A.; Moleva, N. G.; Volkova, P. I. (Inst. Metall., Sverdlovsk, USSR). Kompleksn. Ispol'z. Miner. Syr'ya, (11), 35-9 (Russian) 1983. CODEN: KIMSDD. DOCUMENT TYPE: Journal CA Section: 54 (Extractive Metallurgy) Industrial converter slags were evaluated by thermogravimetry for V recovery by oxidn. and leaching. Oxidn. of V2O3 to V2O5 at high temp. was promoted by a smaller particle size of the powd. slag. The effect of slag compn. on V2O5 oxidn. was detd. Leaching losses of V increased at the higher content of Cr2O3 or excess Na2O, and by the impaired filtration of fines from the leaching slurry. .

Characterization of supported vanadium oxide catalysts by low temperature oxygen chemisorption technique

Characterization of supported vanadium oxide catalysts by low temperature oxygen chemisorption technique. I.Several substances are used for example 7782-44-7 and 1314-34-7 which are their cas registry numbers. The vanadia/g-alumina system. Nag, N. K.; Chary, K. V. R.; Reddy, B. Mahipal; Rao, B. Rama; Subrahmanyam, V. S. (Catal. Sect., Reg. Res. Lab., Hyderabad 500 009, India). Appl. Catal., 9(2), 225-33 (English) 1984. CODEN: APCADI. ISSN: 0166-9834. DOCUMENT TYPE: Journal CA Section: 67 (Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms) Low-temp. O chemisorption was used to characterize V2O5-g-Al2O3 catalysts. The results strongly suggest the formation of a monolayer with high dispersion of V2O5 on Al2O3 surface. The monolayer coverage of the surface is completed when the V2O5 content of the catalysts reaches 11.9% and beyond this loading crystallites of V2O5 start to form on the Al2O3 surface. Within the monolayer level the active surface area and active site d. increase with increased V2O5 loading, while those in the post monolayer region show a sharp decline as the load increases. The dispersion of V2O5 remains essentially const. within the monolayer level and decreases almost linearly as a function of V2O5 loading in the post monolayer region. .