化工学报 ›› 2021, Vol. 72 ›› Issue (8): 4391-4400.DOI: 10.11949/0438-1157.20201683
收稿日期:
2020-11-25
修回日期:
2021-03-11
出版日期:
2021-08-05
发布日期:
2021-08-05
通讯作者:
赵荣祥
作者简介:
赵岩(1989—),男,硕士研究生,基金资助:
Yan ZHAO(),Xiuping LI,Rongxiang ZHAO()
Received:
2020-11-25
Revised:
2021-03-11
Online:
2021-08-05
Published:
2021-08-05
Contact:
Rongxiang ZHAO
摘要:
低共熔溶剂广泛应用于氧化脱硫过程,开发新型的低共熔溶剂并进一步提升脱硫效果具有重要的意义。 以氯化胆碱为氢键受体,苯酚为氢键供体合成了ChCl/2Ph型低共熔溶剂。通过FT-IR和1H NMR证实了苯酚和氯化胆碱之间存在氢键作用。以苯酚型低共熔溶剂为萃取剂,双氧水为氧化剂,硫酸钛为催化剂氧化脱除模拟油中的二苯并噻吩。考察了反应温度、V(ChCl/2Ph)/V(Oil)、n(H2O2)/n(S)、催化剂用量以及硫化物类型对脱硫率影响。实验表明最佳反应条件如下:模拟油量为5 ml,V(ChCl/2Ph)/V(Oil)=2∶10, n(H2O2)/n(S)=6,催化剂用量为0.01 g,反应温度为40℃,反应时间180 min。在此条件下脱硫率可以达到98.2%。求得体系的表观活化能为41.9 kJ/mol。含有催化剂的低共熔溶剂相可以重复使用5次且活性没有明显降低。机理研究表明形成钛的过氧化物和Br?nsted酸性是具有较高脱硫活性的关键。
中图分类号:
赵岩, 李秀萍, 赵荣祥. 苯酚型低共熔溶剂中硫酸钛作为催化剂高效氧化脱硫[J]. 化工学报, 2021, 72(8): 4391-4400.
Yan ZHAO, Xiuping LI, Rongxiang ZHAO. Highly efficient oxidative desulfurization with titanium sulfate as catalyst in phenol based deep eutectic solvent[J]. CIESC Journal, 2021, 72(8): 4391-4400.
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