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- Title
Effect of synthesis method on stabilized nano-scaled Sb–V–O catalysts for the ammoxidation of propane to acrylonitrile.
- Authors
Guerrero-Pérez, M. O.; Fierro, J. L. G.; Bañares, M. A.
- Abstract
A new synthesis method to prepare V–Sb–O phases on Al2O3, and Nb2O5 substrates has been investigated and compared with previous works in which a conventional synthesis method was used. The new preparation method leads to an amorphous layer of Sb oxide, which had not been described previously; its Raman bands are reported for the first time. This new method provides an intimate contact between Sb and V during synthesis. It has a clear influence on the structure and catalytic properties of the final catalysts. The total amount (Sb + V), the Sb/V atomic ratio, and the specific support determine acrylonitrile production. Depending on catalyst stoichiometry, different preparation methods are preferred. Standard Sb2O3 suspension method is preferred at Sb/V atomic ratios above 1. The new tartrate method is preferred at Sb/V = 1 atomic ratio, resulting in the best catalytic performance.
- Subjects
PROPANE; ACRYLONITRILE; OXIDATION; NANOPARTICLES; CATALYSIS; OXIDES
- Publication
Topics in Catalysis, 2007, Vol 41, Issue 1-4, p43
- ISSN
1022-5528
- Publication type
Article
- DOI
10.1007/s11244-006-0093-7