以直馏汽油馏分为原料,进行催化氧化-萃取脱硫,研究了催化剂、萃取剂及反应条件对脱硫效果的影响.结果表明,最佳脱硫条件为:乙酸钴为催化剂,质量分数30％的双氧水为氧化剂,质量分数95％的乙醇为萃取剂,30 mL直馏汽油中加入乙酸钴0.01 g及双氧水0.7 mL,反应温度50 ℃,反应时间30 min,搅拌条件下对直馏汽油进行催化氧化,0.6的剂油比(V/V)萃取氧化后的直馏汽油,得到脱硫精制汽油,硫含量由225μg/L降至精制后的15.0 μg/L,满足欧Ⅳ并接近欧V排放标准.%The desulphurization of straight-run gasoline fraction was studied by catalytic oxidation-extraction, the effect of catalyst, extractant and reaction condition on desulphurization consequent. The results showed that the optimum desulphurization conditions were as follows: cobalt acetate as catalyst, hydrogen peroxide of 30% mass percent as oxidant and ethanol of 95% mass percent as extractant, when treating 30 mL straight-run gasoline under the condition of catalyst dosage of 0.01 g and hydrogen peroxide 0.7 mL, reaction temperature of 50 ℃, reaction time of 30 min with stirring, an extractant to oxidized gasoline volume ration of 0.6, the sulfur content of the refined gasoline dropped from 225 μg/L to 15 μg/L which meet the requirement of Europe Ⅳ emission standard.
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