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This study investigates the stripping (back-extraction) of palladium from the perspective of mixer–settler hydrodynamics. A hydroxyoxime extractant and hydrochloric acid medium are used. Firstly, the palladium stripping rate (chemistry) is determined using a vigorously stirred laboratory unit cell. This increases with operating temperature and stripping acid concentration. At optimal chemical conditions...
The effect of intra-phase diffusion for channel-flow oxidation reactors with washcoats ranging in thickness from 10 to 80μm is explored in combination with a detailed surface chemistry for low-temperature (⩽200∘C) H 2 oxidation over supported Pd/PdO x catalysts. A numerical model of a porous catalyst washcoat is developed to assess how local conditions influence catalyst effectiveness...
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