Renewable syngas &amp; hydrogen synthesis via steam reforming of glycerol over ceria-mediated exsolved metal nano catalysts

Umar, Ahmed; Neagu, Dragoş; Irvine, John Thomas Sirr

doi:10.1016/j.ijhydene.2023.03.385

Cited by 5 publications

(3 citation statements)

References 58 publications

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“…The addition of promoters has the potential to enhance the catalytic activity, improve the metal reducibility, increase the regenerability of spent catalysts, and sustain the resistance to catalyst deactivation. In this aspect, the addition of second metals such as Ca, , Fe, Co, Cu, CeO 2 , , Cr, La, Ce, Sr, Mn, − etc. to Ni-based catalysts has been investigated in many studies.…”

Section: Introductionmentioning

confidence: 99%

Role of Mn in the Ni–Mn/SBA-15 Catalyst for Hydrogen Production by Biomass Steam Reforming at Relatively Low Temperature

Phoo,

Nakagoe,

Hlaing

et al. 2024

J. Phys. Chem. C

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The reaction mechanism of steam reforming of cyclohexane as a model compound of tar on Ni/SBA-15 and Ni−Mn/ SBA-15 catalysts was investigated by the transient technique and temperature-programmed reduction method. These catalysts were prepared by the impregnation of SBA-15 with an ethylene glycol-containing metal precursor and characterized by transmission electron microscopy (TEM), X-ray diffraction, and X-ray photoelectron spectroscopy. The spent catalysts were characterized by thermogravimetric analysis and Raman spectrometry. According to TEM analysis, it was considered that the Ni−Mn alloy state was formed on 9Ni−1Mn/SBA-15. Compared with the 10Ni/SBA-15 catalyst, the addition of Mn into Ni increased the formation of H 2 because of strong interactions between Ni and Mn in the Ni−Mn alloy and acceleration of the dehydrogenation of C 6 H 12 .

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Section: Introductionmentioning

confidence: 99%

Role of Mn in the Ni–Mn/SBA-15 Catalyst for Hydrogen Production by Biomass Steam Reforming at Relatively Low Temperature

Phoo,

Nakagoe,

Hlaing

et al. 2024

J. Phys. Chem. C

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“…However, the fluid catalytic cracking process and the steam-reforming of natural gas are the main origins of hydrogen production; these are nonrenewable processes from a feedstock point of view [2]. As the main byproduct from the biodiesel production process (approximately 1 ton of glycerol/10 tons of biodiesel), glycerol been considered as a prospective green feedstock for hydrogen production, owing to its relatively high hydrogen content, nontoxicity, and ease of storage and employment [3][4][5]. Scientists have explored and developed different types of hydrogen production technology from crude glycerol, mainly including steam-reforming, supercritical water phase-reforming, aqueous phase-reforming, and the autothermal partial oxidation of glycerol, etc [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Scientists have explored and developed different types of hydrogen production technology from crude glycerol, mainly including steam-reforming, supercritical water phase-reforming, aqueous phase-reforming, and the autothermal partial oxidation of glycerol, etc [6,7]. Due to its high theoretical hydrogen production and good industrial application prospects, steam-reforming of glycerol (GSR) is considered to be the best prospective hydrogen production process, and has been rapidly researched and developed [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Steam-Reforming of Glycerol over LDHs-Derived Ni-Al Nanosheet Array Catalysts for Stable Hydrogen Production

et al. 2023

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In the present work, LDHs–derived Ni–Al nanosheet arrays (NiAl/NA) were successfully synthesized via a one–step hydrothermal method, and applied in the steam-reforming of glycerol reaction for enhanced and stable hydrogen production. The physicochemical properties of catalysts were characterized using various techniques, including XRD, SEM–EDS, XPS, N2–physisorption, Raman, and TG–DTG. The results indicate that smooth and cross–linked Ni–Al mixed metal oxide nanosheets were orderly and perpendicularly grown on the Ni foam substrate. The SEM line scan characterization reveals the metal concentration gradient from the bottom to the top of nanosheet, which leads to distinctly optimized Ni valence states and an optimized binding strength to oxygen species. Owing to the improved reducibility and more exposed active sites afforded by its array structures, the NiAl/NA catalyst shows enhanced glycerol conversion (83.1%) and a higher H2 yield (85.4%), as well as longer stability (1000 min), compared to the traditional Ni–Al nanosheet powder. According to the characterization results of spent catalysts and to density functional theory (DFT) calculations, coke deposition is effectively suppressed via array construction, with only 1.25 wt.% of amorphous carbons formed on NiAl/NA catalyst via CO disproportionation.

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Engineering oxygen vacancies on Tb-doped ceria supported Pt catalyst for hydrogen production through steam reforming of long-chain hydrocarbon fuels

Xiao,

Zhang,

et al. 2024

Chinese Journal of Chemical Engineering

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Renewable syngas & hydrogen synthesis via steam reforming of glycerol over ceria-mediated exsolved metal nano catalysts

Cited by 5 publications

References 58 publications

Role of Mn in the Ni–Mn/SBA-15 Catalyst for Hydrogen Production by Biomass Steam Reforming at Relatively Low Temperature

Role of Mn in the Ni–Mn/SBA-15 Catalyst for Hydrogen Production by Biomass Steam Reforming at Relatively Low Temperature

Catalytic Steam-Reforming of Glycerol over LDHs-Derived Ni-Al Nanosheet Array Catalysts for Stable Hydrogen Production

Engineering oxygen vacancies on Tb-doped ceria supported Pt catalyst for hydrogen production through steam reforming of long-chain hydrocarbon fuels

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