초록

In a process for cracking a sulfur-containing hydrocarbon an improved oxidation promoter for converting SO2 to SO3 comprising an intimate association of palladium and at least one other metal selected from the group comprising platinum, osmium, iridium, rhenium, and rhodium.

대표청구항 ▼

An improved fluid catalytic cracking process wherein a circulating inventory including a particulate cracking catalyst is cycled between a hydrocarbon cracking zone and a catalyst regeneration zone and wherein the sulfur content of the gases leaving the regeneration zone is controlled by including i

An improved fluid catalytic cracking process wherein a circulating inventory including a particulate cracking catalyst is cycled between a hydrocarbon cracking zone and a catalyst regeneration zone and wherein the sulfur content of the gases leaving the regeneration zone is controlled by including in the circulating inventory a sulfur oxide sorbent, the improvement comprising having present in the regeneration zone on an inorganic oxide support a sulfur dioxide oxidation promoter formed by the intimate association of palladium or a compound of palladium with at least one other metal or a compound thereof selected from the group consisting of platinum and iridium, with the proviso that when the other metal is platinum that palladium comprises at least 50% of the associated metals by weight.