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The U.S. Environmental Protection Agency (EPA) Tier 2 regulations limit the sulfur content of gasoline to 30 ppmw by January 1, 2004. At the same time, the sulfur content of the crude oil in the marketplace is steadily increasing. These divergent trends in sulfur have generated a renewed interest in new and improved desulfurization technologies for fluid catalytic cracked (FCC) naphtha— the chief contributor (>90%) of sulfur in gasoline.