Study of a platelet catalytic three-phase reactor filled with a Pt-β-SiC using formic acid oxidation as test reaction
Abstract
A platelet catalytic three-phase reactor equipped wit a Pt--SiC foam was characterized first in cold conditions (O2-water) with hydrodynamic of liquid phase and gas-liquid mass transfer. Axial dispersion was significant and dependant of operating conditions like interstitial velocities, foam morphology or flow direction as well as kLa in the range of 0.3 to 0.8.10-3 s-1. A specific protocol has been optimized to deposit Pt on the SiC foam. Intrinsic activity was determined and compare with other catalysts. Finally, platelet catalytic foam reactor was tested in continuous using acid formic oxidation as a model reaction. Reactor optimization has to be continued in order to avoid possible external mass transfer limitations.