查看文章

A series of Cr₂O₃–ZrO₂ mixed oxides were prepared by a hydrothermal method and studied in relation to their performance in the dehydrogenation of propane to propylene with CO₂. The material prepared from a hydrothermal treatment at 180°C gives an initial propane conversion of 53.3%, which is 1.6 times that of the conventional Cr₂O₃–ZrO₂. The enhanced activity of the hydrothermally prepared materials is attributed to a higher concentration of Cr⁶⁺ species. CO₂ can alleviate the catalyst deactivation significantly.