Herein, we have studied an alternative route for preparing CuO_x/CeO₂ catalysts using metal organic frameworks (MOFs) as precursors. Usually, CuOx/CeO₂ materials are prepared by wet impregnation of ceria support. In this study, we have impregnated a Cu-MOF with a ceria precursor and then pyrolized the impregnated MOF using different conditions and procedures. The prepared catalysts have been characterized by using a wide range of techniques such as XRD, XPS, Raman, and TPR. We have found that the pyrolysis method determines the dispersion of the oxidized copper species on the ceria surface what, in turn, controls the catalytic activity and selectivity of the catalysts in the reverse water-gas shift (RWGS) reaction. We have compared the behavior of the MOF-derived catalysts against an optimized catalyst prepared by a conventional method (wet impregnation), finding that the MOF-derived catalyst shows better catalytic performance.

本文中，我们研究了一种使用金属有机骨架（MOF）作为前体制备CuO _x / CeO ₂催化剂的替代方法。通常，CuOx / CeO ₂通过湿法浸渍二氧化铈载体来制备材料。在这项研究中，我们用二氧化铈前体浸渍了Cu-MOF，然后使用不同的条件和程序将浸渍的MOF热解。通过使用多种技术，例如XRD，XPS，拉曼和TPR，对制备的催化剂进行了表征。我们发现，热解方法决定了氧化铜物质在二氧化铈表面的分散，进而控制了反向水煤气变换（RWGS）反应中催化剂的催化活性和选择性。我们已经将MOF衍生的催化剂的性能与通过常规方法（湿法浸渍）制备的优化催化剂进行了比较，发现MOF衍生的催化剂表现出更好的催化性能。