In this paper, the so-called monolith loop reactor is introduced. In this r
eactor, liquid is circulated over a monolith catalyst using a pump while ga
s-phase circulation is obtained by the pressure difference across the react
or. A model is derived to calculate the liquid hold-up inside the monolith
as a function of the liquid circulation flow rate. Gas-liquid mass-transfer
measurements in a monolith are compared to a model for capillaries. A comb
ination of the hydrodynamic and the mass transfer models leads to predicted
k(L)a values as a function of the power input. The performance of the mono
lith loop reactor is compared to bubble columns and stirred-tank reactors.
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