Today, the Earth's atmosphere contains a large amount of carbon dioxide, which among all greenhouse gases contributes most to the increase in the greenhouse effect. Several methods are used to reduce its impact, including the conversion of carbon dioxide into value-added chemicals.
The diploma thesis describes the conversion of carbon dioxide using heterogeneous catalysis, the preparation of catalysts and their evaluation. The catalysts used was CeO$_2$, which was prepared by the hydrothermal method and doped with Ga, so that I obtained five catalysts with different Ga contents. Nitrogen physisorption, X-ray diffraction, infrared spectroscopy, scanning electron microscopy and thermal analysis were used to characterize the catalysts, and the catalytic activity was evaluated by the conversion reaction of diamine to dicarbamate, which I monitored with gas chromatography. The best conversion result was achieved by the CeO$_2$ catalyst with a 15% Ga content.
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