Ruthenium nanoparticle catalysts stabilized in phosphonium and imidazolium ionic liquids: dependence of catalyst stability and activity on the ionicity of the ionic liquid
作者:Kylie L. Luska、Audrey Moores
DOI:10.1039/c2gc35241a
日期:——
Ruthenium nanoparticles (Ru NPs) were synthesized from the reduction of Ru(2-methylallyl)2(cod) under an atmosphere of H2(g) in a series of phosphonium and imidazolium ionic liquids (ILs): [P4,4,4,1]NTf2, [P4,4,4,8]NTf2, [P4,4,4,14]X (for −X = −NTf2, −OTf, −PF6), [BMI]NTf2 and [BDMI]NTf2. The Ru NPs embedded in each of these ILs were used as biphasic hydrogenation catalysts for the reduction of cyclohexene
钌 纳米粒子(Ru NPs)是在一系列磷鎓和咪唑鎓中,在H 2(g)气氛下,通过还原Ru(2-甲基烯丙基)2(cod)合成的离子液体(ILS):[P 4,4,4,1 ] NTF 2,[P 4,4,4,8 ] NTF 2,[P 4,4,4,14 ] X(为- X = - NTF 2,-光学传递函数,- PF 6),[BMI] NTF 2和[BDMI] NTF 2。嵌入在这些IL中的Ru NP被用作双相加氢催化剂 为了减少 环己烯。NP的性质,就NP稳定性和催化活性而言,取决于IL的性质,这些差异通过IL离子性的Walden图分析得以合理化。该分析支持以下观点:就离子对或超分子聚集体而言,离子缔合的形成在金属NP的IL稳定化中起关键作用。假设此稳定机制与NP稳定性和催化活性之间存在相关性。