CumeneProzess

The Cumene process, also known as the Hock process, is the most common industrial method for the production of phenol and acetone. It involves the oxidation of cumene (isopropylbenzene) to cumene hydroperoxide, followed by its acid-catalyzed cleavage. The primary feedstock for the process is benzene, which is alkylated with propylene to form cumene. This cumene is then oxidized, typically using air, in a liquid phase reaction to produce cumene hydroperoxide. The oxidation step is usually carried out in the presence of a catalyst, although it can also proceed without one. Following the oxidation, the cumene hydroperoxide is subjected to a strong acid, most commonly sulfuric acid, which catalyzes its decomposition. This decomposition yields phenol and acetone as the main products. The reaction is highly selective and efficient, making it the dominant route for phenol and acetone production globally. Byproducts of the process can include acetophenone and alpha-methylstyrene, which may be further processed or sold. The Cumene process is a cornerstone of the petrochemical industry, providing essential building blocks for a wide range of downstream applications.