New compounds in the MoO{sub 3}-V{sub 2}O{sub 5} system

Journal Article · Fri Sep 01 04:00:00 EDT 1995 · Inorganic Materials

OSTI ID:160409

Molchanov, V V; Plyasova, L M; Goidin, V V ^[1]

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1. Institute of Catalysis, Novosibirsk (Russian Federation); and others

Vanadium molybdenum compounds are widely used as catalysts for selective oxidation of acrolein to acrylic acid, methanol to formaldehyde, benzene to maleic anhydride, etc. The following phases are known to exist in the MoO{sub 3}-V{sub 2}O{sub 5} system: V{sub 2}O{sub 5}, (V{sub 1-x}Mo{sub x}){sub 2}O{sub 5} (x < 0.3), V{sub 2}MoO{sub 8}, and MoO{sub 3}. Molybdenum trioxide dissolves up to 2 mol % V{sub 2}O{sub 5} or up to 3 mol % V{sub 2}O{sub 4}. Vanadium dissolution in {open_quotes}hexagonal{close_quotes} molybdenum trioxide was studied. However, the necessary condition for the existence of hexagonal MoO{sub 3} is the presence of low-valent cations (those of alkali metals or ammonium). In this work, the authors used mechanochemical synthesis to prepare a number of earlier known compounds in the title system as well as some new compounds, which have not been reported thus far.

• OSTI ID: 160409
• Journal Information: Inorganic Materials, Journal Name: Inorganic Materials Journal Issue: 9 Vol. 31; ISSN 0020-1685; ISSN INOMAF
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
CHEMICAL PREPARATION
MOLYBDENUM OXIDES
VANADIUM OXIDES