| abstract |
Processes for making phenol and acetone can include: alkylating benzene with a C 2-6 alkyl source in the presence of a zeolite catalyst to produce C 8-12 alkylbenzene; By the presence of an oxygen-containing gas oxidation of the C 8-12 alkyl benzene to produce the C 8-12 alkyl benzene hydroperoxide; The C 8-12 alkylbenzene hydroperoxide is cleaved and cracked in the presence of an acid catalyst to form phenol, C 3-6 ketone, and unwanted byproducts such as, but not limited to, acetaldehyde, DMBA, acetophenone, AMS, AMS dimers, unidentified heavies, or a combination comprising at least one of the foregoing); And monitoring in real time the concentration of the C 8-12 alkylbenzene hydroperoxide in the process stream of the reactor at a temperature and pressure of the process stream; And controlling the parameters of the reactor in real time, and / or cleavage and decomposition corresponding to the concentration of the C 8-12 alkylbenzene hydroperoxide. |