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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Synthesis, characterization and catalytic evaluation of Vo x/Mg yAlo x in the decomposition of isopropanol

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Author(s):
Gilberto G. Cortez [1] ; Débora M. Meira [2]
Total Authors: 2
Affiliation:
[1] Universidade de São Paulo. Escola de Engenharia de Lorena - Brasil
[2] Universidade de São Paulo. Escola de Engenharia de Lorena - Brasil
Total Affiliations: 2
Document type: Journal article
Source: Química Nova; v. 31, n. 6, p. 1290-1295, 2008-00-00.
Abstract

Vanadium oxide supported on hydrotalcite-type precursors was studied in the decomposition of isopropanol. Hydrotalcite-type compounds with different y = Mg+2/Al+3 ratios were synthesized by the method of coprecipitating nitrates of Mg+2 and Al+3 cations with K2CO3 as precipitant. The X-ray diffraction patterns of Al-rich hydrotalcite precursors showed the presence of crystalline phases of brucite and gibbsite. It was shown that chemical composition, texture, acid-base properties of the active sites and also Mg/Al ratio strongly affect the formation of the products in the oxidation of isopropanol. The Al-rich catalysts were much more active than the Mg-rich ones, converting isopropanol mainly to propylene. (AU)