Interactions among supported copper-based catalyst components and their effects on performance: A review

Recent Advances on the Rational Design of Non-Precious Metal Oxide Catalysts Exemplified by CuOx/CeO2 Binary System: Implications of Size, Shape and Electronic Effects on Intrinsic Reactivity and Metal-Support Interactions

“…The implications of size, shape and electronic/chemical effects in catalysis will be next exemplified on the basis of state-of-the-art catalytic applications of CuO x /CeO 2 binary oxide, involving CO oxidation, N 2 O decomposition, preferential oxidation of CO (CO-PROX), water gas shift reaction (WGSR), and CO 2 hydrogenation to value-added chemicals/fuels. It should be noted here that the scope of the present article is not to provide a complete survey in relation to the fundamental understanding and practical applications of CuO x /CeO 2 system, which can be found in various comprehensive reviews [40,49,[75][76][77]. Herein, the CuO x /CeO 2 system is used as an excellent benchmark to reveal how we can adjust the local surface chemistry and in turn, the catalytic activity of MOs.…”

“…In light of the above aspects, in this section, the main implications of size, shape and electronic/chemical effects on the catalytic performance of CuO x /CeO 2 system during some of the most relevant applications in heterogeneous catalysis will be discussed. It should be stressed that it is not the aim of this section to provide an extended overview of CuO x /CeO 2 catalytic applications, which can be found in several comprehensive reviews [3,49,57,75,76,221]. It mainly aims to provide a general optimization framework towards the development of highly active and cost-effective MOs, paving also the way for the decrease of precious metal content in NMs-based catalysts.…”

“…In particular, ceria or cerium oxide (CeO 2 ) has attracted considerable attention, due to its unique properties, including enhanced thermal stability, high oxygen storage capacity (OSC) and oxygen mobility, as well as superior reducibility driven by the formation of surface/structural defects (e.g., oxygen vacancies) through the rapid interplay between the two oxidation states of cerium (Ce 3+ /Ce 4+ ) [2,6,38,[46][47][48]. Besides bare ceria's exceptional properties, its combination with transition metals leads to improved catalytic performance, due to the synergy between the metal phase and the support, related to electronic, geometric and bifunctional interactions [40,[49][50][51][52][53][54]. In this regard, the combination of CuO x and CeO 2 oxides towards the formation of CuO x /CeO 2 binary oxides, offers catalytic activities comparable or even better to NMs-based catalysts in various applications, such as CO oxidation, N 2 O decomposition, preferential oxidation of CO (CO-PROX), as lately reviewed [40].…”

Research Progress of Ceria-Based Catalysts in the Selective Catalytic Reduction of NO_<em>x</em> by NH₃

“…负载型金属氧化物催化剂因其良好的催化性 能和低廉的成本而广泛应用于众多重要催化反应, 这在我们前期撰写的几篇综述文章中都有专题探 讨. [26][27][28] 人们早已发现在负载型金属氧化物催化剂 中, 表面负载组分的性质常常不可避免地会受到载 体的影响, 29 研究表面负载组分与载体之间的相互 作用, 已成为多相催化领域多年来持续研究的热 点. 负载型金属氧化物催化剂的载体通常可分为刚 性载体(如 Al2O3、 SiO2 等)和活性载体(如 CeO2、 TiO2 等), 其中活性载体与表面负载组分之间的相互作用 更丰富, 因此成为关注的焦点.…”

Preparation of activated ceria and its desulfurization performance

“…Based on temperature-programmed reduction and Fourier transform infrared spectroscopy (FT-IR) observations, the high reactivities and stabilities of Au/CeO 2 catalysts are mainly attributed to the well-defined ceria nanorods with {110} and {100} facets and relatively low energies for oxygen vacancy formation. Dong et al [14] studied the dispersion of metal oxides on supports and determined that Ce 4+ ions occupy the surface octahedral vacant sites during the pre-impregnation procedure. Due to the strong interaction with the support, the surface-dispersed ceria species present different properties than crystalline ceria.…”