The polyoxomolybdate-quinoline compounds, [C_nquin]₄Mo₈O₂₆ (C_nquin = N-alkylquinolinium, n = 2,5,8), have been successfully synthesized and characterized by ¹H NMR, IR spectrum, elemental analysis and TGA, etc. The compounds have relatively high stability with decomposing temperature up to about 300 °C. Here the polyoxomolybdate-quinoline compounds were applied in removal of sulfur-containing compounds (benzothiophene [BT], dibenzothiophene [DBT] and thiophene [T]) in a system composed of model oil, 30% H₂O₂ and 1-octyl-3-methylimidazolium tetrafluoroborate ([C₈mim]BF₄). The effects of the ratio of H₂O₂ to model oil, the amount of catalyst, the structure of catalyst, the nature of sulfur-containing compounds and reaction temperature were studied to estimate the optimal conditions. The most suitable conditions were suggested: n (H₂O₂): n (DBT) = 4:1 and n (DBT): n (catalyst) = 100: 1, under 60 °C in 90 min. With the catalysts of [C₂quin]₄Mo₈O₂₆ [C₅quin]₄Mo₈O₂₆ and [C₈quin]₄Mo₈O₂₆, the removal of DBT could reach 98.4%, 98.5% and 99.2% respectively. The [C₈quin]₄Mo₈O₂₆ could be recycled for 5-times with a slight decrease in activity.

所述polyoxomolybdate -喹啉化合物，[C _Ñ五重峰] ₄沫₈ ø ₂₆（C _Ñ五重峰=  Ñ -alkylquinolinium，Ñ  = 2,5,8），已经成功地合成和表征通过¹ H NMR，IR光谱，元素分析该化合物在分解温度高达约300°C时具有相对较高的稳定性。在此，将聚氧钼酸酯-喹啉化合物应用于由模型油，30％H ₂ O ₂和1-辛基-油组成的系统中，以去除含硫化合物（苯并噻吩[BT]，二苯并噻吩[DBT]和噻吩[T]）。3-甲基咪唑四氟硼酸盐（[C ₈mim] BF ₄）。研究了H ₂ O ₂与模型油的比例，催化剂用量，催化剂结构，含硫化合物的性质和反应温度的影响，从而确定了最佳条件。建议最合适的条件：n（H ₂ O ₂）：n（DBT）= 4：1，n（DBT）：n（催化剂）= 100：1，在60°C下90分钟。用[C ₂ quin] ₄ Mo ₈ O _26和[C ₅ quin] ₄ Mo ₈ O ₂₆和[C ₈ quin] ₄ Mo ₈ O的催化剂_{如图26所示}，DBT的去除率可分别达到98.4％，98.5％和99.2％。[C ₈ quin] ₄ Mo ₈ O ₂₆可以循环使用5次，但活性略有下降。