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Expired
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GB156A
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Individual
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Individual
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Priority to GB156ApriorityCriticalpatent/GB797111A/en
Publication of GB797111ApublicationCriticalpatent/GB797111A/en
B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
B01J23/90—Regeneration or reactivation
B01J23/94—Regeneration or reactivation of catalysts comprising metals, oxides or hydroxides of the iron group metals or copper
Abstract
Technical cresol is hydrogenated in the vapour phase at 185 DEG C using a finely-divided metallic nickel catalyst carried on porous ceramic granules.ALSO:Metallic nickel, copper cobalt or iron catalysts, which have been used in the presence of sulphur so that metallic sulphides have been formed, are regenerated with liquid formic acid. The process may be carried out in two stages: (a) the liquid formic acid treatment is in the presence of a static or floating carrier gas (b) the second stage is the removal of excess formic acid with hydrogen carrier gas or a inert carrier gas. Between the two stages the catalyst impregnated with acid may be allowed to remain in a static atmosphere before the application of stage (b).
GB156A1956-01-021956-01-02Revival of poisoned metallic catalysts
ExpiredGB797111A
(en)
A procedure for the catalytic hydrogenation of a compound containing carbon and its corresponding catalyst (Machine-translation by Google Translate, not legally binding)