Phenol is one of the most important starting materials for various chemical products. The major process to produce phenol is the CHP route because of high CHP conversion and phenol yield and its mild reaction conditions. Acetone, an important chemical, is coproduced with phenol in this process in nearly same yield. A problem is: the future demand for acetone will decrease, while the demand of phenol will enormously increase. Unfortunately this means the phenol production is in part dependent on the demand for acetone, which is rising at a lower rate than phenol, and so in the future acetone may become a waste product. The solution of the snag has experiment and theoretical parts. The experimental work deals with the CHP catalyzed cleavage reaction at different operating conditions and in the theoretical part, a rate based model is achieved to solve MESHR equations, taking into account the mass and heat transfer effects on material and energy balances. This book subtracts for searchers and industrialists especially chemical engineers or anyone heedful in phenol an economic and developer method to raise phenol output from CHP cleavage using reactive distillation technique.