Optimization of O-sulfonated phenol production for cumene hydroperoxide cleavage

A method for the cleavage of a C8-12 alkylbenzene hydroperoxide into phenol and a C3-6 ketone, comprising:

• contacting the C8-12 alkylbenzene hydroperoxide with a catalytically sufficient amount of a sulfonated phenol under conditions effective to cleave the C8-12 alkylbenzene hydroperoxide to form the phenol, the C3-6 ketone, a C2-C6 alkylaldehyde, or a combination comprising at least one of the foregoing,
• wherein the sulfonated phenol is manufactured by a method comprising
• combining phenol and a sulfonating agent at a first temperature that is 1° C. to 15° C. higher than a melting temperature of the phenol, to form a reaction mixture at the first temperature,
• reducing the first temperature of the reaction mixture to a second temperature that is 10 to 40° C. lower than the first temperature, and
• forming the sulfonated phenol at the second temperature.