Zinc aluminate (ZnAl) was used as support to obtain a series of rhodium-modified Co-ZnAl catalysts for the catalytic oxidation of propane and naphthalene. The catalysts were characterized by various techniques including N₂ adsorption (BET), X-ray diffraction (XRD), temperature programmed reduction (TPR), diffuse reflectance spectroscopy (DRS), FTIR and X-ray photoelectron spectroscopy (XPS), to correlate chemical and physical characteristics with catalytic properties. TPR and XPS techniques show the presence of segregated cobalt compounds, as well as cobalt species interacting with the support. Segregated cobalt species are considered responsible for the catalytic activity, due to their high reducibility. The addition of Rh promotes the reducibility of the cobalt compounds yielding to an increase in the surface content of Co²⁺. For propane oxidation, the best activity shown by the Rh(0.5)Co(5)-ZnAl sample could be associated with a synergic effect between rhodium and cobalt species. No specific effects were revealed due to the addition rhodium for the naphthalene oxidation.

以铝酸锌（ZnAl）为载体，获得了一系列铑改性的Co-ZnAl催化剂，用于丙烷和萘的催化氧化。通过包括N ₂在内的各种技术对催化剂进行了表征。吸附（BET），X射线衍射（XRD），程序升温还原（TPR），漫反射光谱（DRS），FTIR和X射线光电子能谱（XPS），以将化学和物理特性与催化性能相关联。TPR和XPS技术表明存在分离的钴化合物，以及与载体相互作用的钴物种。偏析的钴由于其高还原性而被认为是催化活性的原因。Rh的添加促进钴化合物的还原性，导致Co ²⁺的表面含量增加。。对于丙烷氧化，Rh（0.5）Co（5）-ZnAl样品显示出的最佳活性可能与铑和钴物种之间的协同作用有关。由于添加了用于萘氧化的铑，没有发现具体的作用。