Artigo de Periódico
The role of the coprecipitation sequence of salt precursors on the genesis of Cu-ZnO-Al2O3 catalysts. synthesis, characterization and activity for low temperature shift reaction
Fecha
1998-06Registro en:
0104-6632
v. 15, n. 2
Autor
Figueiredo, R. T.
Andrade, Heloysa Martins Carvalho
Fierro, J. L. G.
Figueiredo, R. T.
Andrade, Heloysa Martins Carvalho
Fierro, J. L. G.
Institución
Resumen
Cu-ZnO-Al2O3 catalysts for the low-temperature water-gas shift reaction were prepared using methods of direct and reverse coprecipitation. The catalysts obtained were characterized by DRX, TPR, XPS, N2O chemisorption, Hg-Porosimetry and BET surface area. It was observed that the precipitation sequence of the precursors led to significant differences in values of copper dispersion and consequently in the activity of the catalyst for the water-gas shift reaction.