Optimizing Ni−Fe−Ga alloys into Ni<sub>2</sub>FeGa for the Hydrogenation of CO<sub>2</sub> into Methanol

Smitshuysen, Thomas E. L.; Nielsen, Mie Femø; Pruessmann, Tim; Zimina, Anna; Sheppard, Thomas L.; Grunwaldt, Jan‐Dierk; Chorkendorff, Ib; Damsgaard, Christian Danvad

doi:10.1002/cctc.202000174

Cited by 19 publications

(6 citation statements)

References 61 publications

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“…Recently, some intermetallic catalytic systems other than the classical Cu-Zn combination were found to be comparably active or better in terms of both CO2 hydrogenation kinetics and methanol selectivity. [149][150][151][152][153][154][155][156][157][158][159][160] Studt et al reported silica supported Ni-Ga catalyst as better than the existing Cu/ZnO/Al2O3 catalyst in terms of reduced RWGS activity. 149 The catalyst was able to reduce CO2 to methanol at ambient pressure and it was observed that a specific stoichiometric ratio (Ni5Ga3) was required in the catalyst formulation to achieve high selectivity.…”

Section: Non-cu-based Catalystsmentioning

confidence: 99%

Advances in the Design of Heterogeneous Catalysts and Thermocatalytic Processes for CO₂ Utilization

et al. 2020

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Utilization of CO2 as feedstock to produce fine chemicals and renewable fuels is a highly promising field, which presents unique challenges in its implementation at scale. Heterogeneous catalysis with its simple operation and industrial compatibility can be an effective means of achieving this challenging task. This review summarizes the current developments in heterogeneous thermal catalysis for the production of carbon monoxide, alcohols and hydrocarbons from CO2. A detailed discussion is provided regarding structure-activity correlations between catalyst surface and intermediate species which can aid in rational design of future generation catalysts. Effects of active metal components, catalyst supports, and promoters are discussed in each section, which will guide researchers to synthesize new catalysts with improved selectivity and stability. Additionally, a brief overview regarding process design considerations has been provided. Future research directions are proposed with special emphasis on the application scope of new catalytic materials and possible approaches of increasing catalyst performance.

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Section: Non-cu-based Catalystsmentioning

confidence: 99%

Advances in the Design of Heterogeneous Catalysts and Thermocatalytic Processes for CO₂ Utilization

et al. 2020

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“…With an optimized composition, Ni 2 FeGa catalysts were prepared by incipient wetness impregnation with an optimal reduction temperature of 823 K, resulting in alloy formation of the three metals and no evidence of sintering at this temperature. The introduction of Ga into NiFe NPs resulted in higher methanol selectivity through a promotional effect; 204 however, the as-prepared Ni 2 FeGa/SiO 2 did not outperform the commercial Cu/ZnO/Al 2 O 3 (CZA) catalyst that is commonly used for methanol synthesis. Trimetallic alloyed systems could be desirable to deviate away from problems associated with CZA, such as water formation from the RWGS reaction, which promotes Cu sintering.…”

Section: Catalytic Applicationsmentioning

confidence: 99%

Heterogeneous Trimetallic Nanoparticles as Catalysts

et al. 2022

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The development and application of trimetallic nanoparticles continues to accelerate rapidly as a result of advances in materials design, synthetic control, and reaction characterization. Following the technological successes of multicomponent materials in automotive exhausts and photovoltaics, synergistic effects are now accessible through the careful preparation of multielement particles, presenting exciting opportunities in the field of catalysis. In this review, we explore the methods currently used in the design, synthesis, analysis, and application of trimetallic nanoparticles across both the experimental and computational realms and provide a critical perspective on the emergent field of trimetallic nanocatalysts. Trimetallic nanoparticles are typically supported on high-surface-area metal oxides for catalytic applications, synthesized via preparative conditions that are comparable to those applied for mono- and bimetallic nanoparticles. However, controlled elemental segregation and subsequent characterization remain challenging because of the heterogeneous nature of the systems. The multielement composition exhibits beneficial synergy for important oxidation, dehydrogenation, and hydrogenation reactions; in some cases, this is realized through higher selectivity, while activity improvements are also observed. However, challenges related to identifying and harnessing influential characteristics for maximum productivity remain. Computation provides support for the experimental endeavors, for example in electrocatalysis, and a clear need is identified for the marriage of simulation, with respect to both combinatorial element screening and optimal reaction design, to experiment in order to maximize productivity from this nascent field. Clear challenges remain with respect to identifying, making, and applying trimetallic catalysts efficiently, but the foundations are now visible, and the outlook is strong for this exciting chemical field.

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“…[51][52][53][54] Despite the favorable catalytic properties exhibited by Heusler alloys, their role as heterogeneous catalysts has only recently been explored. There is only a handful of Heusler alloy catalysts reported in limited reactions, such as oxidation of carbon monoxide, [55,56] hydrogenation of alkynes, [55][56][57][58] hydrogenation of carbon dioxide to methanol, [59,60] dehydrogenation of 2-propanol, [61] and steam-reforming of methanol. [56] We envisioned that Heusler alloy nanoparticles would be efficient catalysts for reduction reactions, owing to their active metal sites at the surface in a formally zero-oxidation state.…”

Section: Introductionmentioning

confidence: 99%

Ni₂MnAl Heusler Alloy Nanoparticles for Chemoselective Hydrogenation of Nitro Compounds

Gupta,

Yadav,

Rana

et al. 2024

Eur J Inorg Chem

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Despite immense interest for years in Heusler alloys as magnetoelastic materials, their application in heterogeneous catalysis has only recently been explored. We report the development of highly active, robust and magnetically separable Ni2MnAl Heusler alloy nanoparticles as a heterogeneous catalyst for hydrogenation of aliphatic and aromatic nitro compounds to the corresponding amines. The easily synthesizable Ni2MnAl nanoparticles are thermally and chemically robust and exhibited excellent chemoselectivity in the hydrogenation of a range of aliphatic and aromatic nitroarenes, including those bearing functional groups sensitive to reduction, such as alkene, bromo, iodo, carbonyl and cyano, yielding the respective functionalized amines in good yields. Moreover, this solid catalyst is magnetically separable from the reaction mixture and could be recycled and reused at least 10 times without any loss in catalytic activity. The mechanism of the Ni2MnAl Heusler alloy nanoparticles catalyzed nitro reduction was studied by various spectroscopy and control experiments and kinetics. Our work opens a new avenue of developing heterogeneous earth‐abundant metal catalysis for economic and environment‐friendly synthesis of fine chemicals owing to their straightforward synthesis and tunable composition from base‐metals and their diverse structure and properties with their high surface area, thermal and chemical stability, excellent chemoselectivity, magnetic separability and recyclability.

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Optimizing Ni−Fe−Ga alloys into Ni₂FeGa for the Hydrogenation of CO₂ into Methanol

Cited by 19 publications

References 61 publications

Advances in the Design of Heterogeneous Catalysts and Thermocatalytic Processes for CO₂ Utilization

Advances in the Design of Heterogeneous Catalysts and Thermocatalytic Processes for CO₂ Utilization

Heterogeneous Trimetallic Nanoparticles as Catalysts

Ni₂MnAl Heusler Alloy Nanoparticles for Chemoselective Hydrogenation of Nitro Compounds

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Optimizing Ni−Fe−Ga alloys into Ni2FeGa for the Hydrogenation of CO2 into Methanol

Cited by 19 publications

References 61 publications

Advances in the Design of Heterogeneous Catalysts and Thermocatalytic Processes for CO2 Utilization

Advances in the Design of Heterogeneous Catalysts and Thermocatalytic Processes for CO2 Utilization

Heterogeneous Trimetallic Nanoparticles as Catalysts

Ni2MnAl Heusler Alloy Nanoparticles for Chemoselective Hydrogenation of Nitro Compounds

Contact Info

Product

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About

Optimizing Ni−Fe−Ga alloys into Ni₂FeGa for the Hydrogenation of CO₂ into Methanol

Advances in the Design of Heterogeneous Catalysts and Thermocatalytic Processes for CO₂ Utilization

Advances in the Design of Heterogeneous Catalysts and Thermocatalytic Processes for CO₂ Utilization

Ni₂MnAl Heusler Alloy Nanoparticles for Chemoselective Hydrogenation of Nitro Compounds