Effect of Ce promotion on catalytic activity of Ni-Al catalysts in dry reforming of methane DOI Creative Commons
А.М. Manabayeva, С.А. Тунгатарова,

Rabiga O. Sarsenova

et al.

Горение и Плазмохимия, Journal Year: 2023, Volume and Issue: 21(4), P. 249 - 255

Published: Dec. 26, 2023

The Ni-Al, Ni-Ce and Ni-Ce-Al catalysts tested in the dry methane reforming (DRM) were studied. Catalysts synthesized by solution combustion synthesis characterized BET, XRD TEM. Catalytic activity was studied at 600–900 °C with a 33%CH4:33%CO2:34%Ar (vol.%) fed total flow rate of 100 ml/ min (3000 h−1). CH4 CO2 conversion increased increasing Ce up to 15 wt.%, however, further increase content gases decreased. Carbon formed as filaments when worked high temperature. CeAlO3 species could prevent formation filamentous carbon during DRM. Solution is attractive method preparation catalysts, due dispersion Ni particles, thus, surface area small, diminishing coke deposition enhancing stability.

Language: Английский

Effect of the Reactor Material on the Reforming of Primary Syngas DOI Creative Commons
Cláudia Bezerra Silva, Michael Lugo, Carlos Ceballos

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(21), P. 5126 - 5126

Published: Oct. 30, 2024

Syngas, mostly hydrogen and carbon monoxide, has traditionally been produced from coal natural gas, with biomass gasification later emerging as a renewable process. It is widely used in fuel synthesis through the Fischer-Tropsch (FT) process, where H

Language: Английский

Citations

2
Dry Reforming of Methane over Rare-Earth Metal Oxide Ni–M–Al (M = Ce, La) Catalysts DOI Creative Commons

Alua M. Manabayeva,

Päivi Mäki‐Arvela, Zuzana Vajglová

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2023, Volume and Issue: 62(48), P. 20588 - 20607

Published: Nov. 20, 2023

Dry reforming of methane (DRM) was investigated using Ni–M oxide catalysts prepared by solution combustion synthesis (SCS) and compared with Ni/α-Al2O3 synthesized impregnation. According to X-ray diffraction, fresh Ni–La Ni–Ce displayed low crystallinity, which improved after DRM, accompanied the appearance metallic Ni. Ni–Ce–Al Ni–La–Al formed, respectively, CeAlO3 LaAlO3 phases during reaction. For studied featuring surface areas ranging from 3 12 m2/g, average metal particle sizes were 12–32 nm according transmission electron microscopy, particles growing larger time-on-stream (TOS) apart Ni–α-Al2O3. DRM tests conducted for different TOSs, demonstrating that highest CH4 transformation rate concomitant deactivation 30 min time-on-stream. The most stable performance in temperature stability experiments demonstrated catalyst, which, similar other catalysts, H2/CO ratio remained close unity. In long-term tests, catalyst a 3.1-fold higher turnover frequency (TOF) Ni–α-Al2O3, no significant deactivation. TOF values comparable literature, highlighting potential SCS as an alternative approach catalysts.

Language: Английский

Citations

6
Statistical modeling of solution combustion synthesis for Ni/A2O3 catalyst in methane decomposition to hydrogen and carbon nanofibers DOI
Pavel B. Kurmashov, В. С. Тимофеев, Arina V. Ukhina

et al.

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 89, P. 1342 - 1353

Published: Oct. 4, 2024

Language: Английский

Citations

1
Capturing the intrinsic dry reforming of methane reaction in a catalytic dual-phase ceramic-carbonate hollow fibre membrane reactor through simulation modelling and process optimisation DOI Creative Commons

Liza Melia Terry,

Jason Yi Juang Yeo,

Melvin Xin Jie Wee

et al.

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 91, P. 703 - 717

Published: Oct. 17, 2024

Language: Английский

Citations

0
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
Effect of Nickle on Cerium Oxide Support to Develop Cyclic Catalytic Methane Decomposition Followed by CO2 Gasification DOI Creative Commons
Ahmed M.S. Soliman,

Anchu Ashok,

Abdelbaki Benamor

et al.

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(6), P. 114496 - 114496

Published: Oct. 22, 2024

Language: Английский

Citations

0
Physical and chemical characteristics and activity of nickel-modified cobalt-iron-containing catalysts in the reaction of dry reforming of methane DOI Creative Commons
L.K. Myltykbayeva, К. Dossumov,

Gaukhar Ye. Yergaziyeva

et al.

Горение и Плазмохимия, Journal Year: 2024, Volume and Issue: 22(3), P. 187 - 196

Published: Oct. 20, 2024

In the process of dry reforming methane (DRM), activity low-percentage catalysts based on cobalt and iron oxides their modification with nickel oxide was studied. It has been established that addition into Fe2O3/γ-Al2O3 catalyst increases degree conversion from 14 to 89%, also yield target reaction products H2 43.0 vol.%, CO 46.1 vol.% at 850 °C. On a Co3О4-NiО/γ-Al2O3 °C, reaches 88.1%, is 44.8%. TPR-H2 analyzes showed introduction composition, in contrast Co3O4/γ-Al2O3 catalyst, temperature peaks Fe2O3-NiО/γ-Al2O3, reduction shift towards lower temperatures weaken interaction metals support - γ-Al2O3 thereby amount active reduced particles increases, which ensures good catalytic Fe2O3-NiО/γ-Al2O3. According XRD results, spinel-like form NiFe2O4, NiAl2O4 CoAl2O4, phase as Fe2O3 were obtained Fe2O3-NiО/γ-Al2O3 catalyst. This indicates developed new phases are high produce synthesis gas reduction-oxidation processes during DRM reaction.

Language: Английский

Citations

0
Effect of Ce promotion on catalytic activity of Ni-Al catalysts in dry reforming of methane DOI Creative Commons
А.М. Manabayeva, С.А. Тунгатарова,

Rabiga O. Sarsenova

et al.

Горение и Плазмохимия, Journal Year: 2023, Volume and Issue: 21(4), P. 249 - 255

Published: Dec. 26, 2023

The Ni-Al, Ni-Ce and Ni-Ce-Al catalysts tested in the dry methane reforming (DRM) were studied. Catalysts synthesized by solution combustion synthesis characterized BET, XRD TEM. Catalytic activity was studied at 600–900 °C with a 33%CH4:33%CO2:34%Ar (vol.%) fed total flow rate of 100 ml/ min (3000 h−1). CH4 CO2 conversion increased increasing Ce up to 15 wt.%, however, further increase content gases decreased. Carbon formed as filaments when worked high temperature. CeAlO3 species could prevent formation filamentous carbon during DRM. Solution is attractive method preparation catalysts, due dispersion Ni particles, thus, surface area small, diminishing coke deposition enhancing stability.

Language: Английский

Citations

0