Copper-based catalysts over A520-MOF derived aluminum spinels for hydrogen production by methanol steam reforming: The role of spinal support on the performance

Kamyar, Niloofar; Khani, Yasin; Amini, Mostafa M.; Bahadoran, Farzad; Safari, Nasser

doi:10.1016/j.ijhydene.2020.05.184

Cited by 42 publications

(10 citation statements)

References 60 publications

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“…Modification of the Cu/ γ ‐Al 2 O 3 sample with oxides of cerium, lanthanum, and nickel leads to a change in the acidity of the catalyst. According to the literature 57, the low‐temperature peak is attributed to weakly adsorbed NH 3 at weak acidic Lewis sites, the mid‐temperature peak is related to NH 3 adsorbed at strong acidic Lewis sites, and the high‐temperature desorption peak above 400 °C is due to desorption of NH 3 from the Brønsted acid site. The intensity of the peaks of desorbed ammonia from the Cu‐Ni/ γ ‐Al 2 O 3 catalyst is higher than that of the Cu/ γ ‐Al 2 O 3 , Cu‐Ce/ γ ‐Al 2 O 3 , and Cu‐La/ γ ‐Al 2 O 3 catalysts.…”

Section: Resultsmentioning

confidence: 99%

Effect of Ni, La, and Ce Oxides on a Cu/Al₂O₃ Catalyst with Low Copper Loading for Ethanol Non‐oxidative Dehydrogenation

et al. 2021

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The effect of modifying additives (Ni, La, Ce oxides) on the activity of Cu/Al2O3 with a low copper loading was studied for ethanol non‐oxidative dehydrogenation. The catalysts were prepared by impregnation of the commercial Al2O3 granules and characterized by Brunauer‐Emmett‐Teller (BET), scanning electron microscopy (SEM), temperature‐programmed desorption of NH3 (TPD‐NH3), temperature‐programmed reduction of H2 (H2‐TPR), and thermogravimetric analysis (TGA). Modification of Cu/Al2O3 with Ni, La, and Ce oxides results in increasing catalytic activity. A modification of the Cu/Al2O3 catalyst with nickel and lanthanum oxides, in contrast to cerium oxide, leads to an improvement in the dispersion of the catalyst particles. The Cu‐Ni/Al2O3 catalyst with the highest acidity has the highest selectivity for acetaldehyde. The highest selectivity for butanol is observed for the Cu‐La/Al2O3 catalyst, which has the lowest acidity.

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Section: Resultsmentioning

confidence: 99%

Effect of Ni, La, and Ce Oxides on a Cu/Al₂O₃ Catalyst with Low Copper Loading for Ethanol Non‐oxidative Dehydrogenation

et al. 2021

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“…On TEM analysis, the discoid structure of approximately 50 nm was noted. Thermal analysis showed coke deposition of less than 1% after 30 h on stream at 200 °C. , Díaz-Perez et al studied a series of copper supported on SiO 2 , Al 2 O 3 –SiO 2 , TiO 2 rutile catalysts, and Cu/TiO 2 anatase metal oxides. The order of activity was observed as follows: Cu/SiO 2 > Cu/TiO 2 -rutile, >Cu/Al 2 O 3 –SiO 2 > Cu/TiO 2 -anatase.…”

Section: Cu-based Catalystsmentioning

confidence: 99%

Steam Reforming of Methanol for Hydrogen Production: A Critical Analysis of Catalysis, Processes, and Scope

Ranjekar

Yadav

2021

Ind. Eng. Chem. Res.

198

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The hydrogen economy is being pursued quite vigorously since hydrogen is an important and green energy source with a variety of applications as fuel for transportation, fuel cell, feedstock, energy vector, reforming in refineries, carbon dioxide valorization, biomass conversion, etc. Steam reforming of alcohols is a well-established technique to obtain syngas. Methanol is viewed to be a lucrative alternative for fossil fuels, due to its flexibility in being generated from multiple sources, high energy density, and low operating temperatures. The catalysts used for reforming govern the methanol conversion rate and the ratio of gaseous products, i.e., H2, CO, and CO2. Group VIII–XII metals have been widely utilized for methanol steam reforming as they have a higher hydrogen yield. Several other catalysts and novel techniques have been developed and used to date. Quite a few strategies to enhance the performance of catalysts and reduce deactivation have been discussed. This review focuses on the metallic catalysts, mainly Cu, Pd, Zn, with different formulations and compositions for steam reforming of methanol (SRM). Active catalyst components, supports, and their interactions, along with different promoters, are reviewed, and their performances are critically analyzed. The various reaction mechanisms and reaction pathways have been identified and elaborated. A fundamental understanding of the functionality and structure of catalysts is required no matter which alcohol is used as a feedstock, and some general inferences can be obtained from polyhydroxyl feed for the steam reforming of methanol, which is the subject matter of this review. Particularly, the role of copper as a component in mono and multimetallic systems and the nature of support must be studied fundamentally to get high hydrogen yields. It is important to determine how metal support interactions, including oxygen transfer from reducible oxides to the metal site, influence the catalyst activity, selectivity, and stability. Further, the mechanism by which alloying affects the selectivity in multimetallic catalysts must be understood by using high-end characterizations.

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“…Some inherent defects of traditional bimetallic spinels (large particle size, low stability, and few active sites) have hindered their large-scale application. 94,95 Interestingly, the directed synthesis of bimetallic spinels with MOFs as templates not only improves the structure and some properties to compensate for the defects of traditional bimetallic spinels, but also unexpectedly brings some vacancy defects. 96,97 These variations can enhance the advantages of MOF-derived bimetallic spinels for energy and environmental applications (Fig.…”

Section: Variations In Mof-derived Bimetallic Spinelsmentioning

confidence: 99%

Modular preparation of functional bimetallic spinels from metal–organic frameworks: a deep exploration from macro and micro perspectives

Li,

Zhu,

Cheng

et al. 2024

J. Mater. Chem. A

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Copper-based catalysts over A520-MOF derived aluminum spinels for hydrogen production by methanol steam reforming: The role of spinal support on the performance

Cited by 42 publications

References 60 publications

Effect of Ni, La, and Ce Oxides on a Cu/Al₂O₃ Catalyst with Low Copper Loading for Ethanol Non‐oxidative Dehydrogenation

Effect of Ni, La, and Ce Oxides on a Cu/Al₂O₃ Catalyst with Low Copper Loading for Ethanol Non‐oxidative Dehydrogenation

Steam Reforming of Methanol for Hydrogen Production: A Critical Analysis of Catalysis, Processes, and Scope

Modular preparation of functional bimetallic spinels from metal–organic frameworks: a deep exploration from macro and micro perspectives

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Copper-based catalysts over A520-MOF derived aluminum spinels for hydrogen production by methanol steam reforming: The role of spinal support on the performance

Cited by 42 publications

References 60 publications

Effect of Ni, La, and Ce Oxides on a Cu/Al2O3 Catalyst with Low Copper Loading for Ethanol Non‐oxidative Dehydrogenation

Effect of Ni, La, and Ce Oxides on a Cu/Al2O3 Catalyst with Low Copper Loading for Ethanol Non‐oxidative Dehydrogenation

Steam Reforming of Methanol for Hydrogen Production: A Critical Analysis of Catalysis, Processes, and Scope

Modular preparation of functional bimetallic spinels from metal–organic frameworks: a deep exploration from macro and micro perspectives

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Product

Resources

About

Effect of Ni, La, and Ce Oxides on a Cu/Al₂O₃ Catalyst with Low Copper Loading for Ethanol Non‐oxidative Dehydrogenation

Effect of Ni, La, and Ce Oxides on a Cu/Al₂O₃ Catalyst with Low Copper Loading for Ethanol Non‐oxidative Dehydrogenation