X-ray diffractograms and IR spectra of modified vanadium-phosphate catalysts

1 January 1982

journal article
Published by Institute of Organic Chemistry & Biochemistry in Collection of Czechoslovak Chemical Communications

Vol. 47 (5) , 1290-1300
https://doi.org/10.1135/cccc19821290

Abstract

Structure of vanadium-phosphate catalysts (V : P = 1 : 1.2) modified by addition of Li, Ba, Mn, Fe, Co, Ni, Cu, Zn, Pd, Cd, Sn or Ce has been studied by X-ray diffractometry and IR spectroscopy. Dimension of particles is diminished, and degree of arrangement of structure of the contact catalyst is lowered in the presence of the additives as compared with the non-modified catalyst, which can be explained by incorporation of these additives (except for Pd) in the lattice of the basic catalyst. Crystalline phase (VO)₂P₂O₇ has been found in all the catalysts besides the cyclic anion P₄O₁₂^4-; the non-modified and the Ba-containing catalysts contain also the compound VO(PO₃)₂.

Keywords

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