Abstract The hydroformylation process was conducted on FCC light gasoline in which the total olefin content was 45.17% to reduce the olefin content, without losing its octane number. Under the catalysis of the popular Rh(acac)(CO)2 (acac = acetylacetonate) together with triphenylphosphine (TPP), the olefins, though most were internal and branched, were largely transformed to aldehydes at mild conditions without additional solvents. The gasoline octane number was also improved obviously, which confirmed that hydroformylation is a feasible route to upgrade the gasoline. In consideration of the separating advantage of magnetic particles, four magnetic catalysts, Fe3O4@Rh, Fe3O4@Rh@SiO2, Fe3O4@SiO2-NH2-Rh and Fe3O4@SiO2-NH2-Rh@SiO2, were prepared and characterized. Their catalytic abilities for hydroformylation of FCC light gasoline were studied based on the optimized reaction conditions with Rh(acac)(CO)2. The results showed that all the magnetic catalysts had a good performance, but those with a second SiO2 layer exhibited a better stability.

中文翻译：

---

铑磁催化剂降低FCC轻汽油中烯烃含量的加氢甲酰化反应

摘要 对总烯烃含量为45.17%的FCC轻质汽油进行加氢甲酰化工艺，在不损失辛烷值的情况下降低烯烃含量。在流行的 Rh(acac)(CO)2（acac = 乙酰丙酮化物）和三苯基膦 (TPP) 的催化下，尽管大多数是内链和支链的，但在没有额外溶剂的情况下，大部分烯烃在温和的条件下转化为醛。汽油辛烷值也有明显提高，证实加氢甲酰化是一条可行的汽油提质路线。考虑到磁性颗粒的分离优势，制备并表征了四种磁性催化剂Fe3O4@Rh、Fe3O4@Rh@SiO2、Fe3O4@SiO2-NH2-Rh和Fe3O4@SiO2-NH2-Rh@SiO2。基于优化的Rh(acac)(CO)2反应条件，研究了它们对FCC轻汽油加氢甲酰化的催化能力。结果表明，所有磁性催化剂都具有良好的性能，但具有第二层 SiO2 的磁性催化剂表现出更好的稳定性。