Ren Zhuoyi, Sheng Jiangfen, Yuan Qibin, Su Yizhen, Zhu Linhua, Dai Chunyan, Zhao Honglei
Engineering Research Center of Tropical Marine Functional Polymer Materials of Hainan Province, Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Key Laboratory of Functional Organic Polymers of Haikou, Hainan Normal University, Haikou 571158, China.
Jiangsu Jitri Carbon Fiber & Composite Application Technologies Research Institute Co., Ltd., Changzhou 213000, China.
Molecules. 2024 Sep 6;29(17):4238. doi: 10.3390/molecules29174238.
The combustion of fuel with high sulfur concentrations produces a large number of sulfur oxides (SO), which have a range of negative effects on human health and life. The preparation of catalysts with excellent performance in the oxidative desulfurization (ODS) process is highly effective for reducing SO production. In this paper, cross-linked polyvinylimidazole (VE) was successfully created using a simple ontology aggregation method, after which a catalyst of polyvinylimidazolyl heteropolyacid clusters (VE-HPA) was prepared by adding heteropolyacid clusters. Polyvinylimidazolyl-phosphotungstic acid (VE-HPW) showed an outstanding desulfurization performance, and the desulfurization efficiency reached 99.68% in 60 min at 50 °C with HO as an oxidant. Additionally, the catalyst exhibited recyclability nine consecutive times and remained stable, with a removal rate of 98.60%. The reaction mechanism was eventually proposed with the assistance of the free radical capture experiment and GC-MS analysis.
燃烧高硫浓度的燃料会产生大量的硫氧化物（SO），这些硫氧化物对人类健康和生活有一系列负面影响。制备在氧化脱硫（ODS）过程中具有优异性能的催化剂对于减少SO的产生非常有效。本文采用简单的本体聚合法成功制备了交联聚乙烯基咪唑（VE），然后通过添加杂多酸簇制备了聚乙烯基咪唑基杂多酸簇催化剂（VE-HPA）。聚乙烯基咪唑基磷钨酸（VE-HPW）表现出优异的脱硫性能，在50℃下以HO为氧化剂时，60分钟内脱硫效率达到99.68%。此外，该催化剂连续九次表现出可回收性且保持稳定，去除率为98.60%。最终借助自由基捕获实验和GC-MS分析提出了反应机理。
