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The behavior of a catalyst prepared by deposition of Pd nanoparticles over a mesoporous SBA-15 support is compared with that of Pd supported over commercial silica in the direct synthesis of H 2 O 2 from H 2 and O 2 . The activity was studied in a batch and semi-batch autoclave operating at r.t. and at pressures of 6.5bar using methanol as the solvent in the presence...
The deactivation mechanism of Pd supported on silica and mesoporous silica (SBA-15) using CO 2 -expanded methanol as solvent was studied in the direct synthesis of H 2 O 2 in batch and semi-continuous batch reactor tests as well as its hydrogenolysis. Fresh and used catalysts were characterized by TPR and CO chemisorption. The results evidence the presence of deactivation,...
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