Phenylpropanoic acid-based DESs as efficient extractants and catalysts for the removal of sulfur compounds from oil
Phenylpropanoic acid-based DESs as efficient extractants and catalysts for the removal of sulfur compounds from oil
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DOI：
10.1016/j.fuel.2016.10.113
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发表时间：
2017-02-01
期刊：
影响因子：
7.4
通讯作者：
Li, Xiu-Ping
中科院分区：
文献类型：
--
作者：
Mao, Chun-Feng;Zhao, Rong-Xiang;Li, Xiu-Ping
采用简单混合法合成了一系列C_9H_（10）O_2中心点XZnCl_2（X = 0.5 ~ 3）的Bronsted-Lewis酸性低共熔溶剂。通过红外光谱、电喷雾质谱和热重分析对DES进行了表征。以C9 H10 O2中心点XZnCl 2为萃取剂和催化剂，H2 O2为氧化剂，对模拟油品进行了脱硫研究。考察了苯丙酸与氯化锌的摩尔比、反应温度、氧硫比（O/S）、DESs与油的体积比等因素对脱硫率的影响。确定了最佳脱硫条件为：苯丙酸与氯化锌的摩尔比为2：1，反应温度为50 ℃，O/S比为6，DESs与油体积比为0.25：1，模型油用量为5 mL。在最佳条件下，80 min内脱硫率可达99.23%.同时考察了脱硫剂的可循环性，结果表明，脱硫率在运行5次后略有下降。这些结果表明，C9 H10 O2中心点0.5ZnCl（2）DESs在萃取和氧化脱硫体系中表现出较高的脱硫活性和稳定性。(C)2016爱思唯尔有限公司版权所有
A series of Bronsted-Lewis acidic deep eutectic solvents (DESs) of C9H10O2 center dot XZnCl2 (X from 0.5 to 3) were synthesized by simple mixing. The DESs were characterized by infrared spectroscopy, electrospray ionization mass spectrometry, and thermogravimetric analysis. The desulfurization of a model oil was investigated using C9H10O2 center dot XZnCl2 as the extraction agent and catalyst, and H2O2 as the oxidant. The effects of the molar ratio of phenylpropanoic acid to zinc chloride, reaction temperature, oxygen to sulfur (O/S) molar ratio, and volume ratio of DESs to oil on the desulfurization rate were investigated. The optimal conditions for desulfurization were determined to be a phenylpropanoic acid to zinc chloride ratio of 2: 1, a reaction temperature of 50 degrees C, an O/S ratio of 6, a DESs to oil volume ratio of 0.25: 1, and a model oil dosage of 5 mL. Under the optimal conditions, a desulfurization rate of 99.23% in 80 min was achieved. The recyclability of the DESs was also investigated, and the results showed that the desulfurization rate decreased slightly after five runs. These results demonstrate that C9H10O2 center dot 0.5ZnCl(2) DESs exhibit high desulfurization activity and stability in extraction and oxidation desulfurization systems. (C) 2016 Elsevier Ltd. All rights reserved.