Kinetic analysis of isobutylene synthesis from ethanol in the presence of a ZnO/ZrO2 catalyst synthesized by incipient wetness impregnation of zirconium hydroxide with zinc nitrate has been conducted. Analysis data have been used to determine primary, secondary, stable, and unstable products. The selectivity for the reaction products and the order of their formation have been determined. A general scheme of the reaction routes for ethanol conversion to isobutylene has been proposed.