功能化离子液体催化氧化燃料油脱硫研究

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功能化离子液体催化氧化燃料油脱硫研究

作者：王亚楠张娟吴军玲

来源：《河北工业科技》2016年第02期

摘要：设计并制备出具有催化活性的功能化Brnsted酸性离子液体，以此离子液体为催化剂，以H2O2为氧化剂组成催化氧化体系，对含有噻吩和二苯并噻吩的模型油以及柴油进行了催化氧化脱硫研究。结果表明，含有官能团—COOH结构的功能化离子液体具有较高的催化氧化活性，对模型油中噻吩和二苯并噻吩的选择性脱硫效率分别达到了95.2%和98.5%，对实际柴油的脱硫率也达到88.2%。该催化体系避免了传统工艺中有机酸的使用，整个反应体系更加环保、高效。

关键词：催化化学；功能化；离子液体；催化氧化；脱硫

中图分类号：O645.1；TE624.55文献标志码：Adoi：10.7535/hbgykj.2016yx02003

Research on catalytic oxidation desulfurization of

fuel with functional ionic liquid

WANG Yanan1， ZHANG Juan2， WU Junling1

（1. School of Textiles and Garment， Hebei University of Science and Technology，Shijiazhuang， Hebei 050018， China；2. School of Chemical and Pharmaceutical Engineering，Hebei University of Science and Technology， Shijiazhuang， Hebei 050018， China）

Abstract：Functional Brnsted acidic pyridinium-ionic liquids （ILs）， [CH2COOHPy]BF4，is designed and synthesized as catalyst to investigate the oxidative removal of thiophene and dibenzothiophene （DBT） from model oil， with hydrogen peroxide（H2O2） as oxidant. The results shows that ionic liquids with functional group-COOH has high catalytic oxidation activity on the desulfurization of model oil， in which the desulfurization of thiophene and （DBT） in model oil are 95.2% and 98.5% respectively under the optimal conditions. Meanwhile， the desulfurization of the diesel oil is also investigated and 882% of sulfur contents are removed under optima reaction conditions. Organic acid used in traditional system is replaced in this catalytic system， which made the whole system more effective and environmentally friendly.

Keywords：catalytic chemistry； functional； ionic liquid； catalytic oxidation；desulfurization

随着人们对环保要求的不断提高，各国政府为降低环境污染制订了严格的环境法规和政策。随着汽车保有量的不断提高，汽车污染物排放对大气造成的污染问题日趋严重[1]，燃油