Facile preparation of highly dispersed copper promoted cobalt catalyst supported on alumina nanospheres

• Published in: Materials letters 2021-03, Vol.286, p.129221, Article 129221
• Main Authors: Arul Jayan, M., Dawn, S.S., Vinoth Kumar, G.G.
• Format: Article
• Language: English
• Subjects: Aluminum oxide; Bimetallic catalyst; Catalysts; Chemical properties; Cobalt; Copper; Crystallites; Crystallization; Differential scanning calorimetry; Energy dispersive X ray analysis; Materials science; Nanoparticles; Nanospheres; Sol-gel preparation; Sol-gel processes; Thermal stability; Thermogravimetric analysis; Thermogravimetry; Wet impregnation method; X ray analysis; X-ray diffraction
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2020.129221

•Synthesis of copper promoted cobalt catalyst supported on alumina nanospheres by simple methods.•The synthesized catalyst was characterized by various techniques.•The morphology studies confirm that the catalyst is evenly distributed with spherical structure.•The prepared catalyst was thermally stable up to 750 °C. Co/Cu catalyst supported on alumina nanospheres were prepared by two methods. First, Al2O3 nanospheres were successfully prepared by sol – gel method. Next, the prepared alumina nanospheres were impregnated with cobalt and copper metals by wet impregnation method. The physico – chemical properties of the catalyst were studied by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray analysis (EDX), Thermogravimetry analysis (TGA) and Differential Scanning Calorimetry analysis (DSC). The calculated crystallite size of the catalyst was found to be around 4.3 nm by using XRD analysis. Morphological studies revealed good dispersion and spherical structure and the particles diameter ranges around 62.67 nm. The prepared catalyst was thermally stable up to 750 °C was confirmed by TGA analysis. Further, DSC studies showed that the occurrence of the crystallization process in catalyst with an exothermic peak.