The Synergistic Effect of Pore Architect and Reducibility in Ceria-Promoted Ni Molecular Sieve for Methane Dry Reforming DOI Open Access
Norah Alwadai, Abdulaziz A.M. Abahussain,

Vijay Shrivastava

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 14(12), P. 852 - 852

Published: Nov. 24, 2024

Methane and carbon dioxide, the primary contributors to global warming, are now at critical levels, threatening extinction of numerous organisms on our planet. In this regard, dry reforming methane reactions have gained considerable attention because conversion capacity CH4 CO2 into synthetic/energy-important syngas (H2 CO). Herein, a molecular sieve (CBV3024E; SiO2/Al2O3 = 30) with ZSM-8-type pore architect, is utilized as support for active site Ni Ce promoters. Catalysts characterized by surface area porosity, X-ray diffraction study, Raman infrared spectroscopy, thermogravimetry analysis, temperature-programmed reduction/desorption techniques. A total 2 wt.% ceria added over 5Ni/CBV3024E induce optimum connectivity aluminum in silicate framework. NiO residing these porous cages mostly under “prominent interaction support” which reduced easily metallic sites DRM reactions. The 5Ni2Ce/CBV3024E remain stable during reaction achieve ~58% H2 yield after 300 min TOS 42,000 mL/(gcat.h) GHSV ~70% 20 h 26,000 GHSV. high activity longer time stream justifies using CBV3024E sieves promoter Ni-based catalyst towards reaction.

Language: Английский

Recent Advances in the Use of Controlled Nanocatalysts in Methane Conversion Reactions DOI Creative Commons

Felipe Anchieta e Silva,

Thenner S. Rodrigues

Methane, Journal Year: 2024, Volume and Issue: 3(2), P. 359 - 379

Published: June 11, 2024

This study investigates the utilization of controlled nanocatalysts in methane conversion reactions, addressing pressing need for efficient as a feedstock valuable chemicals and clean energy. The methods employed include comprehensive review recent advancements nanocatalyst synthesis, characterization, application, well critical analysis underlying mechanisms controversies activation transformation. main findings reveal significant progress design synthesis nanocatalysts, enabling enhanced activity, selectivity, stability reactions. Moreover, highlights importance resolving surrounding metal–support interactions rational catalyst design. Overall, underscores pivotal role nanotechnology shaping future sustainable energy production, providing insights guiding research directions technological developments this field.

Language: Английский

Citations

2
Photo-Thermal Dry Reforming of Methane with PGM-Free and PGM-Based Catalysts: A Review DOI Open Access

Alessio Varotto,

Umberto Pasqual Laverdura, Marta Feroci

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(15), P. 3809 - 3809

Published: Aug. 1, 2024

Dry reforming of methane (DRM) is considered one the most promising technologies for efficient greenhouse gas management thanks to fact that through this reaction, it possible reduce CO2 and CH4 obtain syngas, a mixture H2 CO, with suitable ratio Fischer–Tropsch production long-chain hydrocarbons. Two other main processes can yield from CH4, i.e., Steam Reforming Methane (SRM) Partial Oxidation (POM), even though, not having as reagent, they are less green. Recently, scientists’ challenge overcome many drawbacks DRM reactions, use precious metal-based catalysts, high temperatures process, metal particle sintering carbon deposition on catalysts’ surfaces. To these issues, proposed solution implement photo-thermal dry in which irradiation light used combination heating improve efficiency process. In paper, we review work several groups aiming investigate pivotal promoting role radiation DRM. Focus also placed design progress needed bringing an industrial scale.

Language: Английский

Citations

2
How reduction temperature influences the structure of perovskite-oxide catalysts during the dry reforming of methane DOI Creative Commons
Florian Schrenk, Lorenz Lindenthal, Hedda Drexler

et al.

RSC Sustainability, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Dry reforming of methane is a promising reaction to convert CO

Language: Английский

Citations

2
Dry Reforming of Methane to Syngas Mediated by Rhodium–Cobalt Oxide Cluster Anions Rh2CoO– DOI

Xi‐Guan Zhao,

Yan‐Xia Zhao, Qing‐Yu Liu

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(36), P. 9167 - 9174

Published: Aug. 30, 2024

Dry reforming of methane (DRM) to syngas is an important route co-convert CH

Language: Английский

Citations

1
Dry Reforming of Methane (DRM) over Hydrotalcite-Based Ni-Ga/(Mg, Al)Ox Catalysts: Tailoring Ga Content for Improved Stability DOI Open Access
Ahmed Yagoub Elnour, Ahmed E. Abasaeed, Anis H. Fakeeha

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 14(10), P. 721 - 721

Published: Oct. 16, 2024

Dry reforming of methane (DRM) is a promising way to convert and carbon dioxide into syngas, which can be further utilized synthesize value-added chemicals. One the main challenges for DRM process finding catalysts that are highly active stable. This study explores potential use Ni-based modified by Ga. Different Ni-Ga/(Mg, Al)Ox catalysts, with various Ga/Ni molar ratios (0, 0.1, 0.3, 0.5, 1), were synthesized co-precipitation method. The tested reaction evaluate their activity stability. Ni/(Mg, its Ga-modified characterized N2 adsorption–desorption, Fourier Transform Infrared Spectroscopy (FTIR), H2-temperature-programmed reduction (TPR), X-ray diffraction (XRD), thermogravimetric analysis (TGA) Raman techniques. test catalytic activity, at 700 °C, 1 atm, GHSV 42,000 mL/h/g, CH4: CO2 ratio 1, revealed Ga incorporation effectively enhanced catalyst Particularly, 0.3 exhibited best performance, CH4 conversions 66% 74%, respectively, an H2/CO 0.92. Furthermore, increased from 34% 46%, when testing 600 94% 96% was operated 850 °C. catalyst’s 20 h stream performance demonstrated great DFT alteration in electronic properties nickel upon incorporation, d-band center (Ga/Ni 0.3) shifted closer Fermi level, charge transfer Ni atoms observed. research provides valuable insights development emphasizes efficient conversion greenhouse gases syngas.

Language: Английский

Citations

1
Toward Carbon‐Negative Methanol Production from Biogas: Intensified Membrane Reactor DOI Creative Commons
Arash YoosefDoost, Omid Jazani, Simona Liguori

et al.

ChemCatChem, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract The modern world's major challenges, such as global warming, air pollution, and increasing energy demands, escalate the importance of sustainable development transition toward renewables using innovative environmentally friendly solutions, intensifying chemical processes, to reduce carbon footprints effectively. Aiming enhance process negative emissions, this perspective explores intensified membrane reactors for reducing intensity converting biogas into methanol, a versatile feedstock, renewable liquid fuel. Syngas methanol synthesis catalysts, membranes were explored, novel reactor designs proposed. Introduction selective catalytic reaction zone combine separation steps could system efficiency intensify by recycling materials, besides costs required process: continuous harnessing products shifts reactions desired species while materials enhances efficiency, separating water from reduces extra processes separation. successful implementation technology holds significant promise developments in producing chemicals fuel methane dioxide emissions achieving carbon‐negative technologies.

Language: Английский

Citations

1
The Synergistic Effect of Pore Architect and Reducibility in Ceria-Promoted Ni Molecular Sieve for Methane Dry Reforming DOI Open Access
Norah Alwadai, Abdulaziz A.M. Abahussain,

Vijay Shrivastava

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 14(12), P. 852 - 852

Published: Nov. 24, 2024

Methane and carbon dioxide, the primary contributors to global warming, are now at critical levels, threatening extinction of numerous organisms on our planet. In this regard, dry reforming methane reactions have gained considerable attention because conversion capacity CH4 CO2 into synthetic/energy-important syngas (H2 CO). Herein, a molecular sieve (CBV3024E; SiO2/Al2O3 = 30) with ZSM-8-type pore architect, is utilized as support for active site Ni Ce promoters. Catalysts characterized by surface area porosity, X-ray diffraction study, Raman infrared spectroscopy, thermogravimetry analysis, temperature-programmed reduction/desorption techniques. A total 2 wt.% ceria added over 5Ni/CBV3024E induce optimum connectivity aluminum in silicate framework. NiO residing these porous cages mostly under “prominent interaction support” which reduced easily metallic sites DRM reactions. The 5Ni2Ce/CBV3024E remain stable during reaction achieve ~58% H2 yield after 300 min TOS 42,000 mL/(gcat.h) GHSV ~70% 20 h 26,000 GHSV. high activity longer time stream justifies using CBV3024E sieves promoter Ni-based catalyst towards reaction.

Language: Английский

Citations

0