Hydrogenation of CO2 to methanol over Cu/AlCeO catalyst

Li, Shaozhong; Guo, Limin; Ishihara, Takeshi

doi:10.1016/j.cattod.2019.01.015

Cited by 89 publications

(70 citation statements)

References 64 publications

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“…Then, the Cu-Ov-Cex species could not only enhance the H2 activity and generation of oxygen vacancies, but also activate CO2 and promote its hydrogenation to methanol by hydrogen spillover. Ex situ XRD measurements showed that Cu 0 cannot be oxidized by CO2, which means that Cu 0 cannot take part in the redox or catalytic circle [22,31,32]. The third factor is related to the CO intermediate, which was considered as the primary reaction mechanism of the copper-ceria interface.…”

Section: Discussionmentioning

confidence: 99%

Copper-ceria solid solution with improved catalytic activity for hydrogenation of CO2 to CH3OH

Yang

Deng

Guo

et al. 2020

Chinese Journal of Catalysis

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Section: Discussionmentioning

confidence: 99%

Copper-ceria solid solution with improved catalytic activity for hydrogenation of CO2 to CH3OH

Yang

Deng

Guo

et al. 2020

Chinese Journal of Catalysis

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“…Copper was considered to be the active site for hydrogen activation, while ZnO and CeO x oxides facilitated the CO 2 adsorption and hydrogen spillover on the interfacial sites [302]. In a similar manner, the introduction of alumina to ceria carrier (Cu/AlCe) led to highly active composites (Table 5), mainly ascribed to the high copper dispersion [303]. Interestingly, highly active and selective CO 2 hydrogenation catalysts can be obtained by co-adjusting the composition, structure and shape, in line with the fine-tuning methodology herein proposed (Figures 2 and 3).…”

Section: Co 2 Hydrogenationmentioning

confidence: 97%

“…The controlled synthesis of multicomponent systems could also be an effective approach for highly active and selective hydrogenation catalysts (e.g., [302][303][304][305]308]). For instance, the ternary composite consisting of Cu, ZnO, CeO x , supported on SBA-15 exhibited high catalytic activity for methanol synthesis (Table 5), due to the peculiar synergistic effects between the different counterparts [302].…”

Section: Co 2 Hydrogenationmentioning

confidence: 99%

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

Konsolakis

Lykaki

2020

Catalysts

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Catalysis is an indispensable part of our society, massively involved in numerous energy and environmental applications. Although, noble metals (NMs)-based catalysts are routinely employed in catalysis, their limited resources and high cost hinder the widespread practical application. In this regard, the development of NMs-free metal oxides (MOs) with improved catalytic activity, selectivity and durability is currently one of the main research pillars in the area of heterogeneous catalysis. The present review, involving our recent efforts in the field, aims to provide the latest advances—mainly in the last 10 years—on the rational design of MOs, i.e., the general optimization framework followed to fine-tune non-precious metal oxide sites and their surrounding environment by means of appropriate synthetic and promotional/modification routes, exemplified by CuOx/CeO2 binary system. The fine-tuning of size, shape and electronic/chemical state (e.g., through advanced synthetic routes, special pretreatment protocols, alkali promotion, chemical/structural modification by reduced graphene oxide (rGO)) can exert a profound influence not only to the reactivity of metal sites in its own right, but also to metal-support interfacial activity, offering highly active and stable materials for real-life energy and environmental applications. The main implications of size-, shape- and electronic/chemical-adjustment on the catalytic performance of CuOx/CeO2 binary system during some of the most relevant applications in heterogeneous catalysis, such as CO oxidation, N2O decomposition, preferential oxidation of CO (CO-PROX), water gas shift reaction (WGSR), and CO2 hydrogenation to value-added products, are thoroughly discussed. It is clearly revealed that the rational design and tailoring of NMs-free metal oxides can lead to extremely active composites, with comparable or even superior reactivity than that of NMs-based catalysts. The obtained conclusions could provide rationales and design principles towards the development of cost-effective, highly active NMs-free MOs, paving also the way for the decrease of noble metals content in NMs-based catalysts.

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“…95 Cu catalyst has been also prepared by the coprecipitation technique by Li et al over ceria support for yielding methanol from CO 2 . 96 Hydrogen has also been catalytically produced by co-precipitated Ni catalysts by Vizcaino et al 97 Methane dry reforming has been conducted by Ni catalysts deposited by similar techniques on ceria-based mixed oxide. It has been observed that the leaching of metal ions is relatively less as the entrapped metal ions go into the sediment due to co-precipitation.…”

Section: Procedures Of Synthesismentioning

confidence: 99%