A study has been made of the air regeneration of a zeolite-containing catalyst coked during the cracking of vacuum gas oh, hydrotreated vacuum gas oil and a furfural extract of oil production in the presence of a passivator of heavy metals. It was established that, on all specimens containing nickel and an antimony-base passivator or nickel alone, coke from vacuum gas oil and hydrotreated vacuum gas oil is fairly evenly oxidized at temperatures of 500, 600 and 700 degrees C. At the same time, the bulk of the coke from the furfural extract is oxidized at 600 degrees C. For vacuum gas oil and the furfural extract it was established that, with the air oxidation of specimens containing nickel and antimony, the CO2/CO ratio is higher or equal to this ratio for a specimen not containing metals.