Ethanol consumption rate model

By applying transient experiments to the dehydration of ethanol on y-alumina, it has been shown that model 1 and 2 can describe the experimentally observed increase of the reaction rate. The introduction of a new parameter in model 1 (p, the ratio of the number of sites of type two by the number of sites of type one, enables a better description of the drastic increase of ethylene directly after stopping the ethanol feed. The parallel behaviour of surface intermediates, a sharp decrease followed by a slow consumption, is quantitatively depicted by model 1, whereas model 2 gives only a qualitative description. Periodic experimentation confirms that model 1 is able to describe the gas phase and the surface more adequately than model 2. 

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