Design of unsteady-state, isothermal and non-isothermal reactors. Non-elementary reactions including Enzymatic, Polymeric, Photo and electrochemical reactions. Introduction to heterogeneous reactions, introduction to multiphase reaction systems. Non-catalytic fluid-solid reactions and reactors. The concept of rate controlling step. Catalysis and kinetic-catalytic models. Catalytic reaction mechanism, catalytic heterogeneous reactors packed and fluidized bed types. Thermal characteristics, the design of catalytic reactors, deactivation of the catalyst. Introduction to non-ideal reactors and residence time distribution.