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摘要: 考察了K2FeO4对模拟轻质油中苯并噻吩（BT）及二苯并噻吩（DBT）的氧化性能。结果表明，水相中K2FeO4对BT、DBT的氧化活性比较低，水的存在使K2FeO4水解成黄色的Fe(OH)3而失去氧化有机硫化物的能力；在冰乙酸反应介质中，K2FeO4对BT及DBT的氧化活性有了明显的提高；固体催化剂KM的加入显著提高了乙酸反应介质中K2FeO4对BT及DBT的氧化活性。常温、常压，醋酸/模拟油体积比为1.0，K2FeO4/S摩尔比为1.0，KM/K2FeO4质量比为1.0的条件下，DBT的转化率达98.4%，BT的转化率为70.1%。Abstract: The oxidation of BT and DBT in model light oil by potassium ferrate was investigated. The results show that the oxidation activity of K2FeO4to BT and DBT in water phase is lower because K2FeO4 reacts rapidly with water to form brown Fe(OH)3 to lose the ability of oxidation to organic sulfur compounds. The oxidation activity of K2FeO4 to BT and DBT increases markedly in acetic acid. The addition of the solid catalyst to acetic acid medium can remarkably promote the oxidation of organic sulfur compounds. The DBT of 98.4% and BT of 70.1% can be converted under the condition of room temperature, atmospheric pressure, acetic acid/ model oil (volume ratio)=1.0, K2FeO4/S (mol ratio)=1.0 and catalyst/K2FeO4 (weight ratio)=1.0.
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Key words:
- oxidative desulfurization /
- light oil /
- potassium ferrate /
- benzothiophene /
- dibenzothiophene
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