Abstract
In this article, the catalytic activity of copper oxide supported on 5A, HZSM-5, Al2O3, SiO2 carriers in the reaction of dry reforming of ethanol was investigated. The results of the study showed that the formation of Н2, СО, С2Н4 and СН4 gases in the reaction products depends on the reaction temperature and the catalytic activity of the catalyst. The 3%CuO/Al2O3 catalyst showed activity for obtaining synthesis gas at T = 800 °C, and the 5%CuO/SiO2 catalyst showed activity for obtaining ethylene at T = 550 °C. 20.6 vol.% H2 and 37.5 vol.% CO are formed on the 3%CuO/Al2O3 catalyst. In order to increase the ethylene concentration, the effect of copper concentration supported on the SiO2 carrier in the DRE process was studied. According to the obtained data, on the 5%CuO/SiO2 catalyst the ethylene concentration increased to 35 vol.%. The catalytic activity is confirmed by peaks in the TPR profile, according to which the reduction of CuO to Cu⁰ in the 5%CuO/SiO2 catalyst occurs more easily and at lower temperatures compared to other catalysts. The reduction of oxides to metals at low temperatures on the catalyst surface allows increasing the catalytic activity of the catalyst.