Highly efficient catalytic oxidation desulfurization from model oil based on acid deep eutectic solvents tetraethylammonium chloride/trifluoroacetic acid

被引：0

作者：

Hou L. ^{[1
]}

Zhao R. ^{[1
]}

Li X. ^{[2
]}

机构：

[1] College of Petrochemical Engineering, Liaoning Shihua University, Fushun, 113001, Liaoning

[2] College of Chemistry & Material Science Engineering, Liaoning Shihua University, Fushun, 113001, Liaoning

来源：

Huagong Xuebao/CIESC Journal | 2017年 / 68卷 / 04期

关键词：

Apparent activation energy; Catalysis; Deep eutectic solvents; Extraction; Kinetics; Oxidative; TEAC/TFA;

D O I：

10.11949/j.issn.0438-1157.20161449

中图分类号：

学科分类号：

摘要：

A series of new deep eutectic solvents (DESs) TEAC/nTFA (n=0.5,1,1.5,2) were synthesized by the reaction of tetraethylammonium chloride (TEAC) with trifluoroacetic acid (TFA) at 70℃ via simple stirring. The structure of the deep eutectic solvents was analyzed by FT-IR and 1H NMR. The removal of sulfide in model oil was studied by using TEAC/TFA as catalyst and extraction agent, and H2O2 as oxidant. The influence of n(TEAC)/n(TFA), temperature, O/S and the type of sulfur-containing compound on the desulfurization efficiency were investigated. Under the optimal conditions, the removal rates of dibenzothiophene (DBT), benzothiophene (BT) and thiophene (TH) were 95.4%, 56.2% and 23.4%, respectively. The apparent activation energy was 56.8 kJ·mol-1 for the removal of DBT, which was estimated by first order reaction kinetics equation and Arrhenius equation. Oxidation reaction was easier to carry out because of the lower apparent activation energy. TEAC/TFA was reused for 5 times without significant decrease in activity. © All Right Reserved.

引用

页码：1614 / 1621

页数：7

共 40 条

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