Article ID Journal Published Year Pages File Type
5441603 Journal of Science: Advanced Materials and Devices 2016 6 Pages PDF
Abstract
La(CoCuO3) nanoperovskites have been prepared by the mechano-synthesis method and treated with hydrogen to yield a high dispersion of bimetallic CoCu sites. The reduced LaCo1-xCuxO3 samples were characterized by XRD, H2-TPR, CO and H2 chemisorption and tested for CO dissociation and for alcohol synthesis from syngas. The experimental results indicated that the activities in CO dissociation and hydrogenation on copper-cobalt metals extracted from perovskite lattice crystals are significantly different from those in the extra-perovskite lattice. The overall catalytic activity in syngas conversion is correlated with the CoCu metal surface, but the alcohol productivity e productivity of alcohols decreases in the order of LaCo0.7Cu0.3O3 > LaCo0.4Cu0.6O3 > Cu2O/LaCoO3 > LaCo0.9Cu0.1O3 > LaCoO3. The highest catalytic activity and alcohol productivity was obtained over sample of the reduced LaCo0.7Cu0.3O3 perovskite catalyst.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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