Synthesis of ultrafine Pd nanoparticles encapsulated in imidazolium-based porous polymers for semi-hydrogenation of alkynes

Mesoporous CeO2-supported ultrafine PdCu nanoparticle catalyst for selective hydrogenation of alkynols

“…[4][5][6][7] However, monometallic active sites with high catalytic activity can lead to poor selectivity for CC hydrogenation. 8,9 For instance, large metal nanoparticles (NPs) and a broad particle size distribution of metal-supported catalysts can lead to metal active sites with different crystal faces exposed, with different atomic structures; this can cause different interactions between alkynyl compounds and metal active sites during alkyne hydrogenation. Active site isolation is a method of isolating and homogenizing metal active sites to inhibit side reactions arising from metal aggregation, to improve catalyst selectivity.…”

Monolithic Catalysts Supported by Emulsion-Templated Porous Polydivinylbenzene for Continuous Reduction of 4-Nitrophenol

“…For a monolithic catalyst, the two main challenges are controlling of porous structures and loading of active components. A series of porous materials, including metal foams, − carbon materials, − ceramic foams, , porous polymers, − etc., have been successfully employed as support materials. Conventionally, active components were loaded onto porous carriers through solution impregnation, sol–gel process, or covering .…”

“…6,23 Polymeric porous carriers, especially microporous organic polymers, exhibit advantages in the design of porous structures and the anchor of active components. 18,24 Polymeric porous carriers have been fabricated with a porogen, 14,15 self-assembly process, 16,17,25 hypercross-linked polymer, 18,19 biomass material, 20 etc. To achieve the catalytic application with these porous polymers, macropores are needed for a suitable flux of the feed liquid.…”

“…Polymeric porous carriers have been fabricated with a porogen, , self-assembly process, ,, hypercross-linked polymer, , biomass material, etc. To achieve the catalytic application with these porous polymers, macropores are needed for a suitable flux of the feed liquid.…”

NIR-enhanced multi-mode catalytic activity over Pd nanocrystals sandwiched within magnetic polydopamine hollow spheres

“…Multifunctional nanoplatforms received increasing research interest in carrying nanocatalysts since they could maintain good dispersion, prevent the leaching of nanocatalysts, and endow them with easy separation characteristics. 16,17 To improve the stability and efficiency of Pd nanocatalysts, a large number of nanocarriers, such as SiO 2 , 18 metal–organic frameworks, 19 metal oxides, 20,21 polymers, 22 and Fe 3 O 4 , 23–28 have been applied for catalytically active metals. These non-toxic, easy to recover, and cost-effective nanoplatforms guaranteed high efficiency for heterogeneous catalysis.…”