phenolcopperHZSM-5 zeolitecatalyst deactivationCatalytic activity and deactivation of the Cu-HZSM-5 catalyst used in the gas-phase hydroxylation of chlorobenzene to phenol were studied. Under the conditions of 773 K and water/chlorobenzene volume ratio of 3, a chlorobenzene conversion of 82.4% and ...
forvapor-liquidseparation.Therefore,traditionalreactivedistillationisnoteffectiveinmanychemicalsystemsbecauseofamismatchintemperatures[4].Thedistillationcolumnwithsidereactorscannotonlyefectivelyincreasetheconversionandselec—tivity,butalsoovercomethetemperatureorpressuremismatchinthetraditionalreactivedistillation[5,6].There...
Oxidative reaction of phenol and chlorobenzene with in situ electro generated Fenton's reagent[J].Chemical Engineering Communications 1993,126.H siao Y,Nobe k.Oxidative reaction of phenol and chloroben-zene with in situelectro generated Fenton’’s reagent.Chem.Eng. Common. 1993...
Roughly 64% of the removed chlorobenzene was converted into phenol, making it the most significant product formed. The types of byproducts suggested that two distinct reaction pathways might compete during the photodegradation process. Interestingly, it appeared that one of these pathways did not ...
Chlorine atoms at positions to Z=OH in mono- and dichlorophenols were removed at much lower temperatures and with a high selectivity to phenol or less chlorinated phenols. In these cases, at the lowest temperatures applied (doi:10.1016/S0008-6223(00)00327-4Danilo Santoro...
Lastly, the band at 1423 cm−1 was assigned to the stretching vibration of the COO− groups from acetate species [45]. These results suggest that the intermediates formed during the CB oxidation process on HPW/CeO2 through the Eley–Rideal mechanism mainly consists of phenolate species, ...
Considering the CB conversion results in Figure 1, CB does not fully decompose with 10C-CM/T at 250 °C; only chlorine species are eliminated [43]. When the temperature increases to 350 °C, the peaks for the phenolic and phenolate disappear (Figure 9c,d), and the intensity of ...