METHOD FOR REGENERATION OF METHYL PHENYL CARBINOL DEHYDRATION CATALYST Russian patent published in 2001 - IPC

FIELD: hydration-dehydration catalysts. SUBSTANCE: method consists in burning out hydrocarbon-containing compounds and coke with air oxygen in water steam flow. Catalyst is then placed into anodic or central chamber of two- or three-chamber electrolyzer, respectively, and chambers are filled with aqueous electrolyte solution with 0.01 to 10 g/l salt content. After applying voltage, regeneration is carried out until required residual sodium oxide content is reached. At that moment pH value in anodic chamber of two-chamber electrolyzer is 3 to 5. When three-chamber electrolyzer is used, regeneration is carried out until current density no higher than 0.2 A/sq.dm is attained. Conversion of methyl phenyl carbinol with thus regenerated catalyst is by 16 to 80% higher than with original catalyst. EFFECT: increased catalyst activity and enabled reuse of completely exhausted catalysts. 3 cl, 1 tbl, 2 ex