CONTRIBUTIONS TO THE CALCULATIONS OF COKE DEACTIVATION KINETICS - A COMPARISON OF METHODS

The deactivation of catalysts by coke deposition can be described in v arious ways. Several methods are compared with experimental data. The experimental system studied is the deactivation of a silica-alumina ca talyst used in the dehydration of 2-ethylhexanol in differential and i ntegral reactors (at constant temperature and using a linear ramp of t emperature-time). The limitations of the conventional simplified metho ds of data analysis are proven. The kinetics calculated by using the s implified methods may differ from the real kinetics and be useless for reactor simulation.