Coke-resistance enhancement of mesoporous γ-Al2O3 and MgO-supported Ni-based catalysts for sustainable hydrogen generation via steam reforming of acetic acid

Ibrahim, Saleh Ahmat; Ekinci, Emine Kaya; Karaman, Birce Pekmezci; Oktar, Nuray

doi:10.1016/j.ijhydene.2021.09.084

Cited by 26 publications

(11 citation statements)

References 51 publications

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“…In addition, its primary nature in the catalyst is to work as a stable support for active metal components, providing a strong mechanical strength, large specific surface, and well-developed pore structure. [25,37,[44][45][46][47] catalysts in HOAc steam reforming, and found that the mesoporous γ-Al 2 O 3 support had higher specific surface area and pore volume, and with larger Lewis acidity than those of the MgO support, resulting a higher activity. [25] To the best of our knowledge, there are few studies conducted on HOAc steam reforming using W-doped Co/Al 2 O 3 catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…[25,37,[44][45][46][47] catalysts in HOAc steam reforming, and found that the mesoporous γ-Al 2 O 3 support had higher specific surface area and pore volume, and with larger Lewis acidity than those of the MgO support, resulting a higher activity. [25] To the best of our knowledge, there are few studies conducted on HOAc steam reforming using W-doped Co/Al 2 O 3 catalysts. The effect of W addition in the Co/Al 2 O 3 had not been reported yet.…”

Section: Introductionmentioning

confidence: 99%

“…Then the carbonacesous residues were reacted with hydroxyl groups on the interface of metal‐support to give steam‐reforming/water‐gas shift reactions to the final products of H 2 and CO 2 . Transition metals of Pt, Rd, Rh, Co, and Ni, and oxide supports of Al 2 O 3 , SiO 2 , ZrO 2 , CeO 2 , TiO 2 , and ZnO were widely tested [22–29] . Utilizations of noble metals, Pt, Pd and Rh, were limited because of their high cost [30] .…”

Section: Introductionmentioning

confidence: 99%

“…The ability is affected by the strength of surface acidity and basicity. In addition, its primary nature in the catalyst is to work as a stable support for active metal components, providing a strong mechanical strength, large specific surface, and well‐developed pore structure [25,37,44–47] . Goicoechea et al.…”

Section: Introductionmentioning

confidence: 99%

“…Ibrahim et al. compared the support performance of Ni/MgO and Ni/Al 2 O 3 catalysts in HOAc steam reforming, and found that the mesoporous γ‐Al 2 O 3 support had higher specific surface area and pore volume, and with larger Lewis acidity than those of the MgO support, resulting a higher activity [25] …”

Section: Introductionmentioning

confidence: 99%

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Addition of tungsten in Co/Al₂O₃ to catalyse the production of hydrogen through acetic acid steam reforming

Wang

et al. 2023

ChemistrySelect

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Steam reforming of bio-oil is a promising green hydrogen production technology. Experimental and theoretical calculations have been carried out to study the performance of Co/ Al 2 O 3 catalysts doped with tungsten (1-10 wt%) for bio-oil model compound acetic acid steam reforming. The maximum acetic acid conversion of 95.4 % and H 2 yield of 93.5 % were obtained over the 15Co-5W/Al 2 O 3 catalyst under the optimized reaction conditions of temperature = 550 °C, steam to carbon ratio = 5 and the gas hourly space velocity of 15,780 h À 1 . The feeding capacity of the catalyst was improved by 2.3 times by the addition of 5 wt% W compared to that of the non-W-added Co/Al 2 O 3 catalyst. Catalyst characterizations by BET, XRD, H 2 -TPR, XPS, HRTEM, and SEM were performed. The results showed that high activities were maintained over 20 h on the 15Co-5W/ Al 2 O 3 catalyst. A little filamentous coke was formed on the spent catalyst surface, and the agglomeration rate of active Co was relatively low. Density functional theory calculations confirmed that the adsorptions of CH 3 COOH and H 2 O on the catalyst were enhanced by the addition of W.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Addition of tungsten in Co/Al₂O₃ to catalyse the production of hydrogen through acetic acid steam reforming

Wang

et al. 2023

ChemistrySelect

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Catalytic Performances of Ni-containing Mesoporous TUD-1 Catalysts in Steam Reforming of Acetic Acid

Ekinci,

Oruç,

Oktar

et al. 2024

Catal Lett

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Non-oxidative ethane dehydrogenation reaction over molybdenum and chromium incorporated MgO encapsulated carbon-core catalysts in microwave reactor

Karaman,

Ekinci

2024

Res Chem Intermed

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Chromium and molybdenum incorporated MgO and MgO–C catalysts were synthesized for hydrogen production from a non-oxidative ethane dehydration reaction. Hydrogen production studies were carried out using a microwave-heated reactor system. The study investigated the effects of reaction temperature, type of active metal, and catalyst preparation method (physical mixture or core–shell structure) on hydrogen selectivity and ethane conversion during dehydrogenation reactions. The results showed that the optimal reaction temperature for the non-oxidative ethane dehydration reaction was 450 °C. Above this temperature, the selectivity of undesired byproducts increased. Catalysts containing molybdenum exhibited higher ethane conversion. Moreover, a comparison of MgO–C-supported catalysts with MgO-supported catalysts revealed that the core–shell catalysts exhibited superior ethane conversion. Notably, the 5Mo@MgO–C catalyst demonstrated exceptional catalytic activity, achieving a high ethane conversion rate of 72% along with excellent stability.

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Coke-resistance enhancement of mesoporous γ-Al2O3 and MgO-supported Ni-based catalysts for sustainable hydrogen generation via steam reforming of acetic acid

Cited by 26 publications

References 51 publications

Addition of tungsten in Co/Al₂O₃ to catalyse the production of hydrogen through acetic acid steam reforming

Addition of tungsten in Co/Al₂O₃ to catalyse the production of hydrogen through acetic acid steam reforming

Catalytic Performances of Ni-containing Mesoporous TUD-1 Catalysts in Steam Reforming of Acetic Acid

Non-oxidative ethane dehydrogenation reaction over molybdenum and chromium incorporated MgO encapsulated carbon-core catalysts in microwave reactor

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Coke-resistance enhancement of mesoporous γ-Al2O3 and MgO-supported Ni-based catalysts for sustainable hydrogen generation via steam reforming of acetic acid

Cited by 26 publications

References 51 publications

Addition of tungsten in Co/Al2O3 to catalyse the production of hydrogen through acetic acid steam reforming

Addition of tungsten in Co/Al2O3 to catalyse the production of hydrogen through acetic acid steam reforming

Catalytic Performances of Ni-containing Mesoporous TUD-1 Catalysts in Steam Reforming of Acetic Acid

Non-oxidative ethane dehydrogenation reaction over molybdenum and chromium incorporated MgO encapsulated carbon-core catalysts in microwave reactor

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Addition of tungsten in Co/Al₂O₃ to catalyse the production of hydrogen through acetic acid steam reforming

Addition of tungsten in Co/Al₂O₃ to catalyse the production of hydrogen through acetic acid steam reforming