Fast Aqueous/Organic Hydrogenation of Arenes, Olefins and Carbonyl Compounds by Poly(N‐Vinylpyrrolidone)‐Ru as Amphiphilic Microreactor System

Abstract

Fast aqueous/organic hydrogenations of arenes, olefins and carbonyl compounds were successfully realized in a PVP-Ru amphiphilic microreactor system. The turnover frequency (TOF) of aqueous/organic hydrogenation of benzene reached 45,000 h

Ru Nanoparticles Entrapped in Mesopolymers for Efficient Liquid-phase Hydrogenation of Unsaturated Compounds

“…Ruthenium catalysts are also usually used in the hydrogenation of arenes [20]. Hydrogenation of arenes, olefins and carbonyl compounds were successfully realized in a PVP-Ru amphiphilic microreactor system [12]. Selective hydrogenation of benzene to cyclohexene in a fixed-bed reactor on Ru/Al 2 O 3 -ZrO 2 /cordierite monolithic catalyst was achieved with high cyclohexene yield [21].…”

“…At present, heterogeneous catalysts are frequently used in this kind of hydrogenation reaction owing to easy product separation and catalyst recycling. Many metals, such as Pt- [4][5][6][7][8][9], Ru- [5,[10][11][12][13][14][15], Au- [16], Pd- [5], Ir- [17], Co- [18] and Cu-based [19] catalysts, have been attempted in the heterogeneous hydrogenation of carbonyl compounds. Among these catalysts, Ru-based catalysts have been extensively studied.…”

Thermo-responsive Ruthenium Dendrimer-based Catalysts for Hydrogenation of the Aromatic Compounds and Phenols

“…The last one is also attained due to the polymers unique properties, those are polymeric chain folding and, as a consequence, catalyst sedimentation in the presence of ''bad'' solvents [2,6,7,11,12] or when the temperature rises or falls, after the critical solution points have been passed [5]. Another merit of many polymeric catalysts is their amphiphilic nature, favourable for the reactions carried out under the two-phase conditions [9,13,14].…”

“…The wild application is typical for the catalysts, based on the poly(N-vinylpyrrolidone) (PVP) [2,14,[20][21][22]. Thus, Rh-PVP complexes appeared to be active in the linear and cyclic alkenes hydrogenation in both alcohol and wateralcohol media [2].…”

Enhanced Pd‐Catalyzed Hydrogenation of Olefins within Polymeric Microreactors under Organic/Aqueous Biphasic Conditions

“…[4,5] Organic/aqueous biphasic catalysis employing water-soluble transition-metal complexes or metal nanocatalysts has become popular over the past few decades, [6][7][8][9][10][11][12] because it is easy to realize catalyst recyclability and product separation by simple means of decantation, since the catalyst is dispersed in aqueous phase and the product in organic phase. However, while the biphasic conditions facilitate catalyst/product separation, it also introduces a kinetic barrier due to mass-transport limitations between the two phases.…”