Heteropoly compounds were dissolved in ionic liquids to obtain heteropoly compound/ionic liquid solutions. SiO₂ nanoparticles with different mass ratios were introduced into the solutions described above to obtain nanofluids. The desulfurization and regeneration performances of the nanofluids have been explored by dynamic H₂S absorption experiments. The results showed that the optimal ratio of SiO₂ nanoparticles was confirmed to be 0.05% at 150 °C and the desulfurization efficiency of the nanofluid remained above 97% at 480 min. The nanofluids exhibited lower desulfurization performance at 100 °C than that at 150 °C. It is noteworthy that heteropoly blue has a self-catalytic effect on the absorption process of H₂S. The results of characterizations revealed that SiO₂ nanoparticles in the nanofluids were covered by heteropoly compounds and sulfur. The morphology of SiO₂ nanoparticles showed no significant change in the absorption–regeneration process. The nanofluids had stable and high desulfurization performance at high temperature and could be regenerated by air easily.

中文翻译：

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基于杂多化合物/离子液体溶液的纳米流体体系脱硫与再生性能研究


将杂多化合物溶解在离子液体中以获得杂多化合物/离子液体溶液。将不同质量比的SiO ₂ 纳米颗粒引入上述溶液中，得到纳米流体。通过动态 H ₂ S 吸收实验探讨了纳米流体的脱硫和再生性能。结果表明，在150 ℃时确定SiO ₂ 纳米粒子的最佳配比为0.05%，480 min时纳米流体的脱硫效率仍保持在97%以上。纳米流体在100℃时的脱硫性能低于150℃时的脱硫性能。值得注意的是，杂多蓝对H ₂ S的吸收过程具有自催化作用。表征结果表明，纳米流体中的SiO ₂ 纳米颗粒被杂多化合物覆盖和硫磺。 SiO ₂ 纳米颗粒的形貌在吸收-再生过程中没有表现出明显的变化。纳米流体在高温下具有稳定、高的脱硫性能，并且易于空气再生。