Zhang, Wei; Mei, Yu; Huang, Xiao; Wu, Peng; Wu, Haihong; He, Mingyuan published the artcile< Size-Controlled Growth of Silver Nanoparticles onto Functionalized Ordered Mesoporous Polymers for Efficient CO2 Upgrading>, SDS of cas: 3240-10-6, the main research area is silver nanoparticle catalyst functionalized mesoporous polymer carbon dioxide; CO2 carboxylation; heterogeneous catalysis; mesoporous materials; monodispersed silver; size-controlled synthesis.
Highly dispersed metallic Ag nanoparticles (AgNPs) are promising heterogeneous catalysts for carboxylative coupling of terminal alkynes with CO2 under mild conditions. Yet their size-controlled synthesis is very challenging due to the high surface energy. Here the authors prepared amino-functionalized ordered mesoporous polymers as hosts for anchoring AgNPs. Control experiments and computations showed that electron-rich amines confined in mesochannels with varying electron d. and steric hindrance, creating localized active zones (LAZ) to control the growth of AgNPs. The particle size of AgNPs grows along with the increased volume of LAZ around nitrogen species. The authors also revealed that the catalytic activity of Ag-based catalysts is size-dependent and increases with decreasing particle size. Building on these findings, the authors report a facile 1-pot synthesis strategy for preparing amine-incorporated ordered mesoporous polymer (NOMP) with a high sp. surface area, small LAZ volume, and uniform amine sites with controllable loading. These features gave ultrasmall and monodispersed Ag nanoparticles. Remarkably, Ag@NOMP gave a quant. target yield under the conditions of 1 atm CO2 pressure and 50°, showing superior catalytic activity in the CO2 carboxylation compared to other mesoporous analogs.
ACS Applied Materials & Interfaces published new progress about Carboxylation catalysts. 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, SDS of cas: 3240-10-6.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics