How magnetic field affects catalytic CO2 hydrogenation over Fe-Cu/MCM-41: In situ active metal phase—reactivity observation during activation and reaction

Munpollasri, Sirapat; Poo‐arporn, Yingyot; Donphai, Waleeporn; Sirijaraensre, Jakkapan; Sangthong, Winyoo; Kiatphuengporn, Sirapassorn; Jantaratana, Pongsakorn; Witoon, Thongthai; Chareonpanich, Metta

doi:10.1016/j.cej.2022.135952

Cited by 13 publications

(8 citation statements)

References 67 publications

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“…The authors inferred that the magnetic field induces the rearrangement of Appropriate magnetic field intensity helps to uniformly disperse the active metal clusters, but increasing the magnetic field strength leads to the close packing and agglomeration of Fe 3 O 4 and FeO clusters, which in turn increases the diffusion resistance of H 2 and hinders the full reduction of the catalyst. 156 A classical chemical reaction occurs when activated molecules collide with each other in an appropriate direction. The process is always associated with the energy transfer between the colliding molecules.…”

Section: Conventional Thermal Catalysis Versus Nonconventional Catalysismentioning

confidence: 99%

An Overview on Dynamic Phase Transformation and Surface Reconstruction of Iron Catalysts for Catalytic Hydrogenation of CO_x for Hydrocarbons

Ding,

Zhu,

Sun

et al. 2024

ACS Catal.

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Catalytic hydrogenation of CO x (CO and CO 2 ) with renewable H 2 represents a feasible practice for carbon capture and utilization and synthesis of chemical commodities, such as olefins, aromatics, and higher alcohols as well as liquid fuels. Direct synthesis via Fischer−Tropsch Synthesis (FTS) is considered as one of the most promising processes. Ironbased catalysts have been recognized as efficient candidates for catalytic hydrogenation of both CO and CO 2 to value-added hydrocarbons due to their superior activities for C−O bond dissociative activation, reverse/water gas shift reaction, and C−C chain growth. The structural complexity and dynamic evolution of iron-based catalysts under CO x -FTS conditions impose challenges on the understanding of the reaction mechanisms, the dynamic structure of active sites and further improvements of the catalytic performance. In this Review, we discussed the recent developments in characterization techniques for identifying the structural evolution of iron-based catalysts under reaction conditions. We also summarized feasible strategies to manipulate the process of the structural change via promoter interfacing, catalyst pretreating protocols, and application of external physical fields. Finally, we concluded the review by identifying current challenges and opportunities for the next generation of CO x catalytic hydrogenation process with an emphasis on the combinatorial contributions from in situ/operando characterizations, chemometrics and machine learning.

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Section: Conventional Thermal Catalysis Versus Nonconventional Catalysismentioning

confidence: 99%

An Overview on Dynamic Phase Transformation and Surface Reconstruction of Iron Catalysts for Catalytic Hydrogenation of CO_x for Hydrocarbons

Ding,

Zhu,

Sun

et al. 2024

ACS Catal.

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“…This indicates that FeO and some metallic iron species are the main active phases for the reverse water gas shift (RWGS), promoting the subsequent FTS. 197 In addition to being the main active center of catalytic reactions, iron oxides can also serve as supports to act as electronic or structural additives, covertly influencing the catalytic reaction process. When gold nanoparticles are loaded on an iron oxide support, the strong metal−support interaction (SMSI) between them helps to improve the catalytic activity of Au nanoparticles.…”

Section: Iron Oxidementioning

confidence: 99%

“…For the CO 2 reduction process, as the magnetic flux increases, the crystal phase of iron oxide changes from Fe 2 O 3 to Fe 3 O 4 and FeO, which enhances CO 2 adsorption on the catalyst surface and the selectivity of CO and C 2 + C 3 hydrocarbon products. This indicates that FeO and some metallic iron species are the main active phases for the reverse water gas shift (RWGS), promoting the subsequent FTS …”

Section: Metal Oxidementioning

confidence: 99%

Crystal-Phase Engineering in Heterogeneous Catalysis

Zhao,

Wang,

Feng

et al. 2023

Chem. Rev.

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The performance of a chemical reaction is critically dependent on the electronic and/or geometric structures of a material in heterogeneous catalysis. Over the past century, the Sabatier principle has already provided a conceptual framework for optimal catalyst design by adjusting the electronic structure of the catalytic material via a change in composition. Beyond composition, it is essential to recognize that the geometric atomic structures of a catalyst, encompassing terraces, edges, steps, kinks, and corners, have a substantial impact on the activity and selectivity of a chemical reaction. Crystal-phase engineering has the capacity to bring about substantial alterations in the electronic and geometric configurations of a catalyst, enabling control over coordination numbers, morphological features, and the arrangement of surface atoms. Modulating the crystallographic phase is therefore an important strategy for improving the stability, activity, and selectivity of catalytic materials. Nonetheless, a complete understanding of how the performance depends on the crystal phase of a catalyst remains elusive, primarily due to the absence of a molecular-level view of active sites across various crystal phases. In this review, we primarily focus on assessing the dependence of catalytic performance on crystal phases to elucidate the challenges and complexities inherent in heterogeneous catalysis, ultimately aiming for improved catalyst design.

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“…Recently, in order to specifically investigate the direct influence of magnetic field on improving the catalytic efficiency of solid phase catalysts, Kiatphuengporn's group systematically investigated the influence of external magnetic field on the metal phase transition during the activation and reaction of Fe‐Cu/ MCM‐41 catalysts using time‐resolution X‐ray absorption spectroscopy (TRXAS) and online quadrupole mass spectrometer. [ 104 ] In situ measurements of CO 2 conversion and selectivity of C 2 + C 3 hydrocarbons were made. The in situ XANES results and the reaction mechanism inferred by quadrupole mass spectrometry and computational chemistry clearly show that the applied magnetic field improves the selectivity of the catalysts (Fe 3 O 4 and FeO) for the C 2 + C 3 hydrocarbon products through RWSG reaction and Fischer–Tropsch synthesis (FTS).…”

Section: Recent Progress Of Magnetic Field Assisted Co2 Reductionmentioning

confidence: 99%

Fundamentals and Recent Progress in Magnetic Field Assisted CO₂ Capture and Conversion

Zhong,

Guo,

Zhou

et al. 2023

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CO2 capture and conversion technology are highly promising technologies that definitely play a part in the journey towards carbon neutrality. Releasing CO2 by mild stimulation and the development of high efficiency catalytic processes are urgently needed. The magnetic field, as a thermodynamic parameter independent of temperature and pressure, is vital in the enhancement of CO2 capture and conversion process. In this review, the recent progress of magnetic field‐enhanced CO2 capture and conversion is comprehensively summarized. The theoretical fundamentals of magnetic field on CO2 adsorption, release and catalytic reduction process are discussed, including the magnetothermal, magnetohydrodynamic, spin selection, Lorentz forces, magnetoresistance and spin relaxation effects. Additionally, a thorough review of the current progress of the enhancement strategies of magnetic field coupled with a variety of fields (including thermal, electricity, and light) is summarized in the aspect of CO2 related process. Finally, the challenges and prospects associated with the utilization of magnetic field‐assisted techniques in the construction of CO2 capture and conversion systems are proposed. This review offers a reference value for the future design of catalysts, mechanistic investigations, and practical implementation for magnetic field enhanced CO2 capture and conversion.

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How magnetic field affects catalytic CO2 hydrogenation over Fe-Cu/MCM-41: In situ active metal phase—reactivity observation during activation and reaction

Cited by 13 publications

References 67 publications

An Overview on Dynamic Phase Transformation and Surface Reconstruction of Iron Catalysts for Catalytic Hydrogenation of CO_x for Hydrocarbons

An Overview on Dynamic Phase Transformation and Surface Reconstruction of Iron Catalysts for Catalytic Hydrogenation of CO_x for Hydrocarbons

Crystal-Phase Engineering in Heterogeneous Catalysis

Fundamentals and Recent Progress in Magnetic Field Assisted CO₂ Capture and Conversion

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How magnetic field affects catalytic CO2 hydrogenation over Fe-Cu/MCM-41: In situ active metal phase—reactivity observation during activation and reaction

Cited by 13 publications

References 67 publications

An Overview on Dynamic Phase Transformation and Surface Reconstruction of Iron Catalysts for Catalytic Hydrogenation of COx for Hydrocarbons

An Overview on Dynamic Phase Transformation and Surface Reconstruction of Iron Catalysts for Catalytic Hydrogenation of COx for Hydrocarbons

Crystal-Phase Engineering in Heterogeneous Catalysis

Fundamentals and Recent Progress in Magnetic Field Assisted CO2 Capture and Conversion

Contact Info

Product

Resources

About

An Overview on Dynamic Phase Transformation and Surface Reconstruction of Iron Catalysts for Catalytic Hydrogenation of CO_x for Hydrocarbons

An Overview on Dynamic Phase Transformation and Surface Reconstruction of Iron Catalysts for Catalytic Hydrogenation of CO_x for Hydrocarbons

Fundamentals and Recent Progress in Magnetic Field Assisted CO₂ Capture and Conversion