Flower-like AgNPs@m-MgO as an excellent catalyst for CO<sub>2</sub> fixation and acylation reactions under ambient conditions
作者:Arpita Hazra Chowdhury、Swarbhanu Ghosh、Sk. Manirul Islam
DOI:10.1039/c8nj02286k
日期:——
Synthesis of fine chemicals from the chemical fixation of CO2 is one of the attractive research areas of today to utilise greenhouse gas CO2 in a greener pathway. A flower-like silver nanoparticle grafted mesoporous magnesium oxide (AgNPs@m-MgO) nanocomposite has been prepared by a facile in situ pathway. The materials are characterised by XRD, FTIR, UV-vis, TG-DTA, FESEM, HR-TEM and N2 adsorption–desorption
利用CO 2的化学固定来合成精细化学物质,是当今在绿色途径中利用温室气体CO 2的有吸引力的研究领域之一。一种花状银纳米颗粒接枝介孔氧化镁(AgNPs @ m-MgO)纳米复合材料已经通过一种简便的原位途径制备。通过XRD,FTIR,UV-vis,TG-DTA,FESEM,HR-TEM和N 2吸附-脱附研究对材料进行表征。该AgNPs @ m-MgO材料显示出具有良好表面积的介孔性质。这表明通过CO 2的化学固定,对末端炔烃的羧化反应都具有出色的催化活性。(1 atm)和在无溶剂条件下使用乙酸作为试剂对各种胺进行酰化反应,分别显示出分别高达98%和99%的丙酸和乙酰胺产品收率。该催化剂的可重复使用性也已得到验证,并且在两个反应中均显示出很高的再循环效率,并且没有明显的催化剂失活。