WebA study was made on the effect of Ca, Sr, and Ba chloride complexes with dibenzo-18-crown-6 ether as catalysts on the process criteria of the efficiency of industrial cumene …
Reaction mechanism of cumene hydroperoxide decomposition in …
Cumene is oxidized in air, which removes the tertiary benzylic hydrogen from cumene and hence forms a cumene radical : The cumene radical then bonds with an oxygen molecule to give cumene peroxide radical, which in turn forms cumene hydroperoxide (C 6 H 5 C (CH 3) 2 O 2 H) by abstracting a benzylic hydrogen … See more The cumene process (cumene-phenol process, Hock process) is an industrial process for synthesizing phenol and acetone from benzene and propylene. The term stems from cumene (isopropyl benzene), the intermediate … See more Cumene is formed in the gas-phase Friedel–Crafts alkylation of benzene by propene. Benzene and propene are compressed together to a pressure of 30 standard atmospheres at 250 °C in presence of a catalytic Lewis acid. Phosphoric acid is … See more • Bisphenol A • Dow process • Friedel Crafts alkylation See more Alternatives to acetone co-production Cyclohexylbenzene can replace isopropylbenzene. Via the Hock rearrangement, cyclohexylbenzene hydroperoxide cleaves to give phenol and cyclohexanone. Cyclohexanone is an important precursor … See more • Phenol -- The essential chemical industry online See more WebHydroperoxide cumene The interval between 0.9 and 3.0 equiv. (relative to sulfide substrate) was studied and the general trend showed that the sulfide conversion went up and reached completion at 1.3 equiv. Both sulfoxide content and ee remain relatively stable (much greater than 90%) and it is only at the highest peroxide levels ( 2 equiv.) when … hills medical centre aldgate sa
Insights into the mechanism of cumene catalytic oxidation using …
Cumene hydroperoxide is an intermediate in the cumene process for producing phenol and acetone from benzene and propene. Cumene hydroperoxide is a free radical initiator for production of acrylates. Cumene hydroperoxide is involved as an organic peroxide in the manufacturing of propylene oxide by the oxidation of propylene. This technology was commerc… WebApr 1, 2024 · A total of 39 terms were excepted out of 179. Thus, a possible mechanism for the cumene oxidation and cumene hydroperoxide decomposition in the presence of Zn, Cd or Hg 2-ethylhexanoate has been substantiated. ... Evaluation for the thermokinetics of the autocatalytic reaction of cumene hydroperoxide mixed with phenol through … WebJul 15, 2024 · The experimental unit is shown in Fig. 1.The reactor (item 10) of 36 mm diameter and 500 mm high (in the experiments of this work), and 50 mm diameter and 400 mm high (in work [20]) is heated by a heating coil (item 5) and equipped with a cooling system (item 4) and a system for catching volatile vapor (items 12 and 13).The mixture of … hills medical centre olinda