摘要
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15.0μg/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-extrac- tion,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 gas- oline 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.
出处
《应用化工》
CAS
CSCD
2013年第2期268-270,286,共4页
Applied Chemical Industry
基金
重庆市自然科学基金资助(CSTC2011jjA90004)
关键词
直馏汽油
脱硫
催化氧化
萃取
straight-run gasoline
desulphurization
catalytic oxidation
extraction
