Simultaneously upgrading <scp>CO<sub>2</sub></scp> and light alkanes into value‐added products

Xie, Zhenhua; Gomez, Elaine; Chen, Jingguang G.

doi:10.1002/aic.17249

Cited by 18 publications

(9 citation statements)

References 48 publications

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“…[2][3][4][5][6] One promising route is the utilization of light alkanes to directly activate CO 2 to value-added products, such as syngas, olefins, aromatics and oxygenates. [7][8][9][10] The recent shale gas boom has significantly increased the supply of light alkanes, with the fraction of ethane (C 2 H 6 ) being up to 10 vol%. 11 Therefore, the catalytic reactions between CO 2 and C 2 H 6 provide a promising strategy to simultaneously reduce the greenhouse gas emissions and upgrade the underutilized C 2 H 6 to important industrial chemicals.…”

Section: Introductionmentioning

confidence: 99%

“…Depending on the selective bond cleavage of C 2 H 6 , there are mainly two pathways, i.e., dry reforming of ethane (DRE) to produce syngas (C 2 H 6 + 2CO 2 -4CO + 3H 2 ) via C-C and C-H bond cleavage and oxidative dehydrogenation of ethane (ODHE) to produce ethylene (C 2 H 6 + CO 2 -C 2 H 4 + CO + H 2 O) via selective C-H bond session while protecting the C-C bond. [7][8][9][10] Bimetallic-derived catalysts, either in the metallic or oxidized form, typically feature distinct catalytic properties and are often superior to those of either monometallic component due to the ligand, ensemble and strain effects. 12 A number of bimetallic-derived catalysts have been used for the reactions of C 2 H 6 with CO 2 , such as Co-Mo, 13 Ni-Mo, 13 Ni-Al, 14,15 Ni-Fe, 13,16,17 Pt-Co, 13 Pt-Ni, 18,19 Pt-Ga, 20 Pt-Ce, 21 Pt-In, 20 Pt-Sn, 22 Pd-Fe, 23 Pd-Co 24 and Pd-In.…”

Section: Introductionmentioning

confidence: 99%

“…, dry reforming of ethane (DRE) to produce syngas (C 2 H 6 + 2CO 2 → 4CO + 3H 2 ) via C–C and C–H bond cleavage and oxidative dehydrogenation of ethane (ODHE) to produce ethylene (C 2 H 6 + CO 2 → C 2 H 4 + CO + H 2 O) via selective C–H bond session while protecting the C–C bond. 7–10…”

Section: Introductionmentioning

confidence: 99%

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Descriptor-based identification of bimetallic-derived catalysts for selective activation of ethane with CO₂

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Descriptor-based identification of bimetallic-derived catalysts for selective activation of ethane with CO₂

et al. 2023

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“…[19] More catalyst and process development are needed to increase the propylene yield to make this approach commercially viable. There are several reviews that compare nonoxidative PDH and ODPH processes, [5,8,9,16,[19][20][21][22] and the rest of this article will focus on the catalyst development in non-oxidative PDH.…”

Section: Introduction 1backgroundmentioning

confidence: 99%

Site Diversity and Mechanism of Metal‐Exchanged Zeolite Catalyzed Non‐Oxidative Propane Dehydrogenation

et al. 2023

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Metal‐exchanged zeolites are well‐known propane dehydrogenation (PDH) catalysts; however, the structure of the active species remains unresolved. In this review, existing PDH catalysts are first surveyed, and then the current understanding of metal‐exchanged zeolite catalysts is described in detail. The case of Ga/H‐ZSM‐5 is employed to showcase that advances in the understanding of structure–activity relations are often accompanied by technological or conceptional breakthroughs. The understanding of Ga speciation at PDH conditions has evolved owing to the advent of in situ/operando characterizations and to the realization that the local coordination environment of Ga species afforded by the zeolite support has a decisive impact on the active site structure. In situ/operando quantitative characterization of catalysts, rigorous determination of intrinsic reaction rates, and predictive computational modeling are all significant in identifying the most active structure in these complex systems. The reaction mechanism could be both intricately related to and nearly independent of the details of the assumed active structure, as in the two main proposed PDH mechanisms on Ga/H‐ZSM‐5, that is, the carbenium mechanism and the alkyl mechanism. Perspectives on potential approaches to further elucidate the active structure of metal‐exchanged zeolite catalysts and reaction mechanisms are discussed in the final section.

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“…Environmental issues stemming from the overreliance on fossil fuels have led to an urgent demand for renewable fuel sources, − with hydrogen (H 2 ) being a particularly promising candidate. − However, most of the commercial methods to produce H 2 involve thermochemical processes centered around the steam methane reforming reaction and water–gas shift reaction . These methods result in the production of undesired byproducts such as CO and CO 2 , thereby offsetting the environmental friendliness provided by H 2 .…”

Section: Introductionmentioning

confidence: 99%

A Review on the Application of In-Situ Raman Spectroelectrochemistry to Understand the Mechanisms of Hydrogen Evolution Reaction

Yoo,

Yesudoss,

Johnson

et al. 2023

ACS Catal.

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In our ever-growing society, enhanced energy security is needed now more than ever to mitigate large-scale climate change. One avenue for the renewable and sustainable energy transition is through electrochemical processes, such as water electrolysis, where hydrogen is produced through the hydrogen evolution reaction (HER). Currently, however, electrocatalysts for HER are either too costly or do not perform to industrial requirements. To mitigate this, a deeper understanding of the electrocatalytic system, including active site determination and structural reconfiguration, is needed. In-situ Raman spectroelectrochemistry is a powerful method in elucidating the mechanisms of electrocatalytic reactions in practical conditions due to its compatibility with electrolytes, small analysis spot size, high acquisition speed, and relative ease of spectral assignment. For the HER in particular, in-situ Raman spectroelectrochemistry can elucidate the active site location by providing a molecular fingerprint of adsorbed hydrogen onto a catalytic active site. In this Review, we provide an overview of the existing experimental works for HER using in-situ Raman spectroelectrochemistry. We discuss the application to existing electrocatalysts, such as the benchmark Pt-based materials and Pt-free alternatives, and we provide insights on the properties needed for a powerful, yet low-cost, HER electrocatalyst. We also discuss ways this method can be applied to further develop emerging electrocatalyst materials such as MXenes. Finally, we examine pertinent works specifically based on surface sensitive Raman techniques, such as surface enhanced Raman spectroscopy (SERS), which provide a revolutionary direction for future related works. Overall, this Review addresses the urgent need for applications of in-situ spectroelectrochemical methods to advance the discovery of catalysts for carbon-neutral energy.

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Simultaneously upgrading CO₂ and light alkanes into value‐added products

Cited by 18 publications

References 48 publications

Descriptor-based identification of bimetallic-derived catalysts for selective activation of ethane with CO₂

Descriptor-based identification of bimetallic-derived catalysts for selective activation of ethane with CO₂

Site Diversity and Mechanism of Metal‐Exchanged Zeolite Catalyzed Non‐Oxidative Propane Dehydrogenation

A Review on the Application of In-Situ Raman Spectroelectrochemistry to Understand the Mechanisms of Hydrogen Evolution Reaction

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Simultaneously upgrading CO2 and light alkanes into value‐added products

Cited by 18 publications

References 48 publications

Descriptor-based identification of bimetallic-derived catalysts for selective activation of ethane with CO2

Descriptor-based identification of bimetallic-derived catalysts for selective activation of ethane with CO2

Site Diversity and Mechanism of Metal‐Exchanged Zeolite Catalyzed Non‐Oxidative Propane Dehydrogenation

A Review on the Application of In-Situ Raman Spectroelectrochemistry to Understand the Mechanisms of Hydrogen Evolution Reaction

Contact Info

Product

Resources

About

Simultaneously upgrading CO₂ and light alkanes into value‐added products

Descriptor-based identification of bimetallic-derived catalysts for selective activation of ethane with CO₂

Descriptor-based identification of bimetallic-derived catalysts for selective activation of ethane with CO₂