| Important results
Publication (UPOL): Hexagonal Mesoporous Silica-Supported Copper Oxide (CuO/HMS) Catalyst: Synthesis of Primary Amides from Aldehydes in Aqueous Medium
Abstract Hexagonal mesoporous silica (HMS)-supported copper oxides (CuO/HMS) have been prepared by a sol-gel method and characterized by X-ray diffraction, FTIR spectroscopy, transmission electron microscopy, N-2 sorption, inductively coupled plasma (ICP), X-ray photoelectron spectroscopy (XPS), H-2 temperatureprogramed reduction (TPR), NH3 temperature-programed desorption (TPD), and high-resolution (HR)-TEM techniques. An analysis of these results revealed a mesoporous material system with a high surface area (974 m(2)g(-1)) and uniform pore-size distribution. The catalytic efficacy of CuO on the HMS support with varying Cu loadings (1, 3, 5, 10, and 15 wt%) was investigated for the transformation of aldehydes to primary amides; 3wt% CuO/HMS exhibited good catalytic performance with good to excellent yields of amides (60-92%) in benign aqueous medium. The intrinsically heterogeneous catalyst could be recovered after the reaction and reused without any noticeable loss in activity.
Kadam R.G., Rathi A.K., Cepe K., Zboril R., Varma R.S., Gawande M.B., Jayaram R.V.:"Hexagonal Mesoporous Silica-Supported Copper Oxide (CuO/HMS) Catalyst: Synthesis of Primary Amides from Aldehydes in Aqueous Medium," CHEMPLUSCHEM, vol. 82, iss.3, pp. 467-473, 2017. IF = 2.797. WP5