An efficient heterogeneous catalytic system for hydroformylation of long-chain alkenes is highly desirable for both academy and industry. In this study, an IL-in-oil Pickering emulsion system was employed for heterogeneous hydroformylation of 1-dodecene with Rh-sulfoxantphos as the catalyst and surface modified dendritic mesoporous silica nanospheres (DMSN) as the stabilizer. The IL-in-oil Pickering emulsion system outperformed IL-oil biphase, water-in-oil Pickering emulsion and IL-oil micelle system under similar reaction conditions to afford n/b ratio of 98 : 2, chemoselectivity of 94% and TOF of 413 h⁻¹, among the highest ever reported for IL-oil biphase hydroformylation of long-chain alkenes. The high efficiency of IL-in-oil Pickering emulsion was primarily attributed to the increased interface area and unique properties of ILs. Studies also revealed that solid stabilizers with large and open pore channels could greatly increase the reaction rate of Pickering emulsion systems by accelerating the diffusion rate. The recyclable IL-in-oil Pickering emulsion is promising not only for hydroformylation of long-chain alkenes but also for catalytic reactions with immiscible liquids.

中文翻译：

---

IL-油中Pickering乳液中长链烯烃的异质加氢甲酰化

对于学术界和工业界来说，用于长链烯烃加氢甲酰化的有效的非均相催化体系都是非常需要的。在这项研究中，采用油中IL皮克林乳液体系，以Rh-磺基黄磷为催化剂，表面改性的树枝状介孔二氧化硅纳米球（DMSN）为稳定剂，将1-十二烯进行异质加氢甲酰化。在相似的反应条件下，油中IL-油匹克林乳液体系的性能优于IL-油双相，油中水匹克林乳液和IL-油胶束体系，n / b比为98：2，化学选择性为94％，TOF为413小时^-1，是有报道的长链烯烃IL-油双相加氢甲酰化反应中最高的。IL-油性Pickering乳液的高效率主要归因于IL的界面面积增加和独特性能。研究还表明，具有大而开放的孔道通道的固体稳定剂可以通过加快扩散速率来大大提高Pickering乳液体系的反应速率。可回收的油中IL-Pickering乳液不仅有望用于长链烯烃的加氢甲酰化，而且有望与不混溶的液体进行催化反应。