作者:Yu, Zhounan、Zhang, Leilei、Tan, Yuanlong、Jing, Rizheng、Cao, Hongchen、Lou, Caiyi、Ge, Rile、Wang, Junhu、Wang, Aiqin、Zhang, Tao
DOI:10.1016/s1872-2067(24)60029-x
日期:——
Rh-P complexes have been widely used as catalysts for hydroformylation reactions. The extremely high price of Rh and its scarce reserves have prompted the exploration of the alternatives. In this study, we reported that Pt/PS-PPh single-atom catalysts promoted by SnCl were highly efficient and selective for the hydroformylation of higher α-alkenes. A broad scope of substrates (i.e., C–C) were smoothly
Rh-P配合物已广泛用作加氢甲酰化反应的催化剂。 Rh 极高的价格及其稀缺的储量促使人们探索替代品。在这项研究中,我们报道了 SnCl 促进的 Pt/PS-PPh 单原子催化剂对于高级 α-烯烃的加氢甲酰化具有高效和选择性。在 90-120 °C 和 4-6 MPa 合成气的反应条件下,多种底物(即 C-C)顺利转化为相应的直链醛,收率高。转换频率(TOF)与均相Pt-Sn催化剂相当,直链/支化比高达> 20。此外,通过额外添加SnCl,催化剂可以重复使用。通过准 X 射线吸附精细结构、傅里叶变换红外和穆斯堡尔光谱阐明了 SnCl 的促进作用。研究发现,SnCl 转化为与 Pt 配位的 Sn(二恶烷)Cl 物质,作为中等给电子配体,与膦基团一起稳定单核 Pt (I) 物质,防止还原和聚集。