The primary objective of this review was to illustrate the significance of ceria–zirconia (CZ) mixed oxides as catalysts and catalyst supports as employed for a wide variety of catalytic applications both in the liquid and gaseous phases. In particular, we were interested in bringing together the recent literature pertaining to these mixed oxides with catalysis perspective. The most prominent application of CZ mixed oxides is in three-way catalysis (TWC) as oxygen storage and release material for several years by replacing cerium dioxide as it shows better efficiency and a high thermal stability. Doping with zirconium oxide, as it is alone a non-reducible oxide, makes the CZ mixed oxide a highly reactive, thermally stable, and more reducible with elevated oxygen storage capacity (OSC) that are important for TWC applications. Apart from the TWC use, the CZ mixed oxides have a huge number of applications, as a direct component or a support, ranging from water–gas shift reaction, reforming of hydrocarbons, dehydration of alcohols, CO₂ utilization, catalytic combustion of pollutants, fine chemicals production, photocatalysis, and so on. All these applications are mainly dependent on three parameters of the mixed oxides, namely, OSC or redox nature, acid–base properties, and crystalline phases. Besides, most of the applications are influenced by the physical properties such as specific surface area, pore volume, pore diameter, crystallite size, and so on. In this review, many details pertaining to the synthesis of these mixed oxides by various conventional and non-conventional methods, their characterization by several techniques, and their application for various reactions of energy and environmental significance, as reported in the literature, are assessed.

中文翻译：

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二氧化铈-氧化锆混合氧化物：合成方法和应用

这篇综述的主要目的是说明二氧化铈-氧化锆（CZ）混合氧化物作为催化剂和催化剂载体的重要性，这些氧化物和催化剂载体被广泛用于液相和气相中的各种催化应用中。尤其是，我们有兴趣将有关这些混合氧化物的最新文献与催化观点结合在一起。CZ混合氧化物最显着的应用是通过替代二氧化铈在三效催化（TWC）中作为氧气存储和释放材料使用了数年，因为它具有更好的效率和较高的热稳定性。掺杂氧化锆，因为它本身就是不可还原的氧化物，使得CZ混合氧化物具有高反应性，热稳定性，并且在提高储氧量（OSC）时更易还原，这对TWC应用而言很重要。除了使用TWC外，₂利用，污染物的催化燃烧，精细化工生产，光催化等。所有这些应用主要取决于混合氧化物的三个参数，即OSC或氧化还原性质，酸碱性质和结晶相。此外，大多数应用受到诸如比表面积，孔体积，孔径，微晶尺寸等物理性质的影响。在这篇综述中，评估了许多细节，这些细节涉及通过各种常规和非常规方法合成这些混合氧化物，通过多种技术对其进行表征，以及将其应用于各种能源和环境意义的反应，如文献所述。