Turning CO2 to CH4 and CO over CeO2 and MCF-17 supported Pt, Ru and Rh nanoclusters – Influence of nanostructure morphology, supporting materials and operating conditions

Malik, Ali Shan; Bali, Henrik; Czirok, Fanni; Szamosvölgyi, Ákos; Halasi, Gyula; Efremova, Anastasiia; Sápi, András; Kukovecz, Ákos

doi:10.1016/j.fuel.2022.124994

Cited by 11 publications

(2 citation statements)

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“…Activation of CO 2 molecules is difficult due to their inherent thermodynamic stability and kinetic inertness. 4 To convert CO 2 into value-added chemicals, the main ways of CO 2 hydrogenation at this stage are CO 2 methanation, 5−8 preparation of methanol by CO 2 hydrogenation, 9,10 and reverse water−gas shift (RWGS) reaction. 11−13 The RWGS is the conversion of CO 2 to CO, which is further hydrogenated to synthesize the corresponding hydrocarbons and alcohols by Fischer−Tropsch synthesis.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, more and more countries are incorporating “carbon peaking and carbon neutral” into their national strategies to promote a zero-carbon future. , In order to balance industrial development and mitigate global climate change, the gas of CO 2 must be converted. Activation of CO 2 molecules is difficult due to their inherent thermodynamic stability and kinetic inertness . To convert CO 2 into value-added chemicals, the main ways of CO 2 hydrogenation at this stage are CO 2 methanation, − preparation of methanol by CO 2 hydrogenation, , and reverse water–gas shift (RWGS) reaction. − The RWGS is the conversion of CO 2 to CO, which is further hydrogenated to synthesize the corresponding hydrocarbons and alcohols by Fischer–Tropsch synthesis. , Therefore, the RWGS is considered as a bridge between CO 2 and CO, enabling it to enter the carbon cycle economy and has received great attention.…”

Section: Introductionmentioning

confidence: 99%

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Tuning the CO₂ Hydrogenation Activity and Selectivity by Highly Dispersed Ni–In Intermetallic Alloy Compounds

Zhang,

Li,

Xiao

et al. 2023

ACS Sustainable Chem. Eng.

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Reverse water−gas shift (RWGS) reaction is considered as an effective solution for conversion of greenhouse gas of the CO 2 to CO, but it still suffers from relatively low activity and selectivity at low temperatures. Herein, we report the catalytic performance and mechanism of NiIn x /SBA-15 with different Ni and In (indium) molar ratios for the RWGS reaction at a low temperature. The results showed that the increment of the In/Ni ratio in intermetallic alloy compounds (IMCs) inhibits CO* adsorption through the "active site isolation" effect, thus improving selectivity of CO. In terms of In−Ni IMCs, Ni acts as the active center but is isolated by In atoms for the CO 2 hydrogenation reaction. XRD and HRTEM showed that Ni and In formed the IMC and were highly dispersed on the large surface area of SBA-15. It was also demonstrated by H 2 -TPR that the addition of In enhanced the interaction between Ni and the support, thus improving the stability of the catalyst with good anti-sintering. Meanwhile, the aggregation charge density of Ni was obtained by In additives, as verified by XPS and DFT simulation. After optimizing the In/Ni molar ratio, the NiIn 0.5 /SBA-15 exhibited a CO 2 conversion of 29% at 400 °C, 0.1 MPa, and 24,000 mL/g cat •h, with a CO selectivity of over 99% and a production rate of about 47 mmol/g cat •h, which is superior to those of the most reported nickel-based catalysts. At the same time, NiIn 0.5 /SBA-15 showed good long-time stability and the conversion of CO 2 was maintained well after a 25 h reaction. In situ DRIFTS reveals a change for surface intermediates from HCOO* to COOH* during CO 2 activation after the introduction of In, leading to a rapid desorption of CO and avoiding further hydrogenation to form CH 4 , which can also be demonstrated by CO-TPD. The highly dispersed Ni−In IMCs with weak adsorption capacity of CO are the main reason for achieving high activity and selectivity for RWGS at low temperatures.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tuning the CO₂ Hydrogenation Activity and Selectivity by Highly Dispersed Ni–In Intermetallic Alloy Compounds

Zhang,

Li,

Xiao

et al. 2023

ACS Sustainable Chem. Eng.

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Organic Synthesis Catalyzed by Metal Nanoparticles

Bao,

Wang,

Feng

et al. 2024

Molecular Catalysis

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A review of photocatalytic CO2 reduction: exploring sustainable carbon emission mitigation from thermodynamics to kinetics and strategies for enhanced efficiency

Akbar,

Javed,

Iqbal

et al. 2024

J. Korean Ceram. Soc.

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Turning CO2 to CH4 and CO over CeO2 and MCF-17 supported Pt, Ru and Rh nanoclusters – Influence of nanostructure morphology, supporting materials and operating conditions

Cited by 11 publications

References 52 publications

Tuning the CO₂ Hydrogenation Activity and Selectivity by Highly Dispersed Ni–In Intermetallic Alloy Compounds

Tuning the CO₂ Hydrogenation Activity and Selectivity by Highly Dispersed Ni–In Intermetallic Alloy Compounds

Organic Synthesis Catalyzed by Metal Nanoparticles

A review of photocatalytic CO2 reduction: exploring sustainable carbon emission mitigation from thermodynamics to kinetics and strategies for enhanced efficiency

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Turning CO2 to CH4 and CO over CeO2 and MCF-17 supported Pt, Ru and Rh nanoclusters – Influence of nanostructure morphology, supporting materials and operating conditions

Cited by 11 publications

References 52 publications

Tuning the CO2 Hydrogenation Activity and Selectivity by Highly Dispersed Ni–In Intermetallic Alloy Compounds

Tuning the CO2 Hydrogenation Activity and Selectivity by Highly Dispersed Ni–In Intermetallic Alloy Compounds

Organic Synthesis Catalyzed by Metal Nanoparticles

A review of photocatalytic CO2 reduction: exploring sustainable carbon emission mitigation from thermodynamics to kinetics and strategies for enhanced efficiency

Contact Info

Product

Resources

About

Tuning the CO₂ Hydrogenation Activity and Selectivity by Highly Dispersed Ni–In Intermetallic Alloy Compounds

Tuning the CO₂ Hydrogenation Activity and Selectivity by Highly Dispersed Ni–In Intermetallic Alloy Compounds