In-situ self-assembled Cu2O/ZnO core-shell catalysts synergistically enhance the durability of methanol steam reforming

Zhang, Guiru; Zhao, Jianfeng; Yang, Taotao; Zhang, Qi; Zhang, Li

doi:10.1016/j.apcata.2021.118072

Cited by 35 publications

(13 citation statements)

References 53 publications

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“…3b). 40,41 The proportions of Cu + and Cu 0 were calculated on the basis of the ratio of their corresponding This journal is © The Royal Society of Chemistry 2022 sub-peak areas, which are summarized in Table 2. The Cu + proportion decreases with the Ga doping, which is consistent with the fact that the electrons of the Cu nanoparticles are getting richer.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Fabricating Ga doped and MgO embedded nanomaterials for sorption-enhanced steam reforming of methanol

et al. 2022

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Section: Catalyst Characterizationmentioning

confidence: 99%

Fabricating Ga doped and MgO embedded nanomaterials for sorption-enhanced steam reforming of methanol

et al. 2022

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“…The Cu/ZnO catalyst is one of the most common catalysts in the methanol reforming process. It has been reported that the stability of copper-based catalysts is closely related to ZnO, and there is a certain interaction between metallic copper and ZnO which has a great influence on the catalyst activity [92,93]. In order to improve catalyst stability and activity, researchers have added various promoters.…”

Section: Doping Promotersmentioning

confidence: 99%

Advances in Enhancing the Stability of Cu-Based Catalysts for Methanol Reforming

Xiao

Lai

et al. 2022

Catalysts

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The advent of fuel cells has led to a series of studies on hydrogen production. As an excellent hydrogen carrier, methanol can be used for reforming to produce hydrogen. Copper-based catalysts have been widely used in methanol reforming due to their high catalytic activity and low-cost preparation. However, copper-based catalysts have been subjected to poor stability due to spontaneous combustion, sintering, and deactivation. Thus, the research on the optimization of copper-based catalysts is of great significance. This review analyzes several major factors that affect the stability of copper-based catalysts, and then comments on the progress made in recent years to improve the catalytic stability through various methods, such as developing preparation methods, adding promoters, and optimizing supports. A large number of studies have shown that sintering and carbon deposition are the main reasons for the deactivation of copper-based catalysts. It was found that the catalysts prepared by the modified impregnation method exhibit higher catalytic activity and stability. For the promoters and supports, it was also found that the doping of metal oxides such as MgO and bimetallic oxides such as CeO2-ZrO2 as the support could present better catalytic performance for the methanol reforming reaction. It is of great significance to discover some new materials, such as copper-based spinel oxide, with a sustained-release catalytic mechanism for enhancing the stability of Cu-based catalysts. However, the interaction mechanism between the metal and the support is not fully understood, and the research of some new material copper-based catalysts in methanol reforming has not been fully studied. These are the problems to be solved in the future.

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“…It is well known that the Cu act as a promoter in various catalytic processes such as NO x reduction (Wang et al 2015), hydrogen production (Pérez-Hernández et al 2007), hydrogenolysis of glycerol (Zhang et al 2021), etc. In the present CO conversion study, the improved catalytic behavior is entirely dependant on CuO content in the composite oxide, which synergistically interacts with Co-Mn and lowers the thermodynamic barrier to enhance the redox property at lower temperatures.…”

Section: Catalytic Performancementioning

confidence: 99%

Highly active nano-composite of cobalt–copper–manganese oxides for room temperature CO oxidation

Kerkar

Salker

2021

Appl Nanosci

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The nano-composite metal oxides are emerging catalytic materials and can be utilized to remediate exhaust pollutants in an energy-efficient way. Thus, Co-Cu-Mn mixed oxide spinel was developed with a glycine combustion route for CO oxidation studies. The composites were characterized by XRD, TEM, N 2 -sorption, CO-TPD studies for understanding the structural, particle, and surface nature of the catalysts. The formation of the solid solution was confirmed of Mn in Co-Cu oxides. Furthermore, the high surface area and porosity of Co-Cu-10Mn showed high CO chemisorption and high activity as compared to other Mn composed Co-Cu catalysts. The catalyst composed of 10% of Mn achieved 100% conversion of CO at a low temperature, i.e., 38 °C. The superior catalytic property of Co-Cu-10Mn is attributed to the CuO species from the solid material that has a more excellent synergistic interaction with Co and Mn. These stronger interactions were creating a vacancy site for CO at room temperature. Also, the reaction stability for 6 h was tested without any loss in the catalytic performance.

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In-situ self-assembled Cu2O/ZnO core-shell catalysts synergistically enhance the durability of methanol steam reforming

Cited by 35 publications

References 53 publications

Fabricating Ga doped and MgO embedded nanomaterials for sorption-enhanced steam reforming of methanol

Fabricating Ga doped and MgO embedded nanomaterials for sorption-enhanced steam reforming of methanol

Advances in Enhancing the Stability of Cu-Based Catalysts for Methanol Reforming

Highly active nano-composite of cobalt–copper–manganese oxides for room temperature CO oxidation

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