Palladium Catalysts Based on Porous Aromatic Frameworks, Modified with Ethanolamino-Groups, for Hydrogenation of Alkynes, Alkenes and Dienes

Catalysts

Maria Terenina¹  Eduard Karakhanov¹  Anton Maximov¹  Maria Kalinina¹  Yulia Kardasheva¹  Leonid Kulikov¹  Daria Makeeva¹ 

[1] Department of Chemistry, Lomonosov Moscow State University, 119234 Moscow, Russia;

关键词: hydrogenation;    heterogeneous catalysts;    palladium;    porous polymers;    amines;   

DOI  :  10.3390/catal10101106

来源: DOAJ

【 摘 要 】

The current work describes an attempt to synthesize hybrid materials combining porous aromatic frameworks (PAFs) and dendrimers and use them to obtain novel highly active and selective palladium catalysts. PAFs are carbon porous materials with rigid aromatic structure and high stability, and the latter are macromolecules which can effectively stabilize metal nanoparticles and tune their activity in catalytic reactions. Two porous aromatic frameworks, PAF-20 and PAF-30, are modified step-by-step with diethanolamine and hydroxyl groups at the ends of which are replaced by new diethanolamine molecules. Then, palladium nanoparticles are applied to the synthesized materials. Properties of the obtained materials and catalysts are investigated using X-ray photoelectron spectroscopy, transmission electron microscopy, solid state nuclear magnetic resonance, low temperature N₂ adsorption and elemental analysis. The resulting catalysts are successfully applied as an efficient and recyclable catalyst for selective hydrogenation of alkynes to alkenes at very high (up to 90,000) substrate/Pd ratios.

【 授权许可】

Unknown