Holmium promoted yttria-zirconia supported Ni catalyst for H2 production via dry reforming of methane

Fakeeha, Anis H.; Patel, Rutu; Hassan, Nissrine El; Al‐Zahrani, Salma A.; Al‐Awadi, Abdulrhman S.; Frusteri, Leone; Bayahia, Hossein; Alharth, Abdulrahman I.; Al‐Fatesh, Ahmed S.; Kumar, Rawesh

doi:10.1016/j.ijhydene.2022.09.029

Cited by 23 publications

(4 citation statements)

References 44 publications

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“…However, the XRD diffraction patterns showed a fall in the MgNiO 2 phase's intensity in the 5Ni/70Mg30Al catalyst. This indicates that the reduction peak at 800 • C was not only due to the reduction of MgNiO 2 , but also due to the reduction of NiO species, which strongly interacted with the support [11]. Overall, it can be said that the incorporation of alumina in a magnesia support brings about a strong interaction of NiO species.…”

Section: Characterization Resultsmentioning

confidence: 90%

Alumina-Magnesia-Supported Ni for Hydrogen Production via the Dry Reforming of Methane: A Cost-Effective Catalyst System

Abahussain,

Al-Fatesh,

Patel

et al. 2023

Nanomaterials

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5Ni/MgO and 5Ni/γAl2O3 are pronounced in the line of cheap catalyst systems for the dry reforming of methane. However, the lower reducibility of 5Ni/MgO and the significant coke deposition over 5Ni/γAl2O3 limit their applicability as potential DRM catalysts. The mixing capacity of MgO and Al2O3 may overcome these limitations without increasing the catalyst cost. Herein, a 5Ni/xMg(100 − x)Al (x = 0, 20, 30, 60, 70, and 100 wt. %) catalyst system is prepared, investigated, and characterized with X-ray diffraction, surface area and porosity measurements, H2-temperature programmed reduction, UV-Vis-IR spectroscopy, Raman spectroscopy, thermogravimetry, and transmission electron microscopy. Upon the addition of 20 wt. % MgO into the Al2O3 support, 5Ni/20Mg80Al is expanded and carries both stable Ni sites (derived through the reduction of NiAl2O4) and a variety of CO2-interacting species. CH4 decomposition at Ni sites and the potential oxidation of carbon deposits by CO2-interacting species over 5Ni/20Mg80Al results in a higher 61% H2-yield (against ~55% H2-yield over 5Ni/γAl2O3) with an excellent carbon-resistant property. In the major magnesia support system, the 5Ni/60Mg40Al catalyst carries stable Ni sites derived from MgNiO2 and “strongly interacted NiO-species”. The H2-yield over the 5Ni/60Mg40Al catalyst moves to 71%, even against a high coke deposition, indicating fine tuning between the carbon formation and diffusion rates. Ni dispersed over magnesia-alumina with weight ratios of 7/3 and 3/7 exhibit good resistance to coke. Weight ratios of 2/8 and 7/3 contain an adequate amount of reducible and CO2-interactive species responsible for producing over 60% of H2-yield. Weight ratio 6/4 has a proper coke diffusion mechanism in addition to achieving a maximum of 71% H2-yield.

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Section: Characterization Resultsmentioning

confidence: 90%

Alumina-Magnesia-Supported Ni for Hydrogen Production via the Dry Reforming of Methane: A Cost-Effective Catalyst System

Abahussain,

Al-Fatesh,

Patel

et al. 2023

Nanomaterials

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“…Therefore, developing strategies for manipulating the reaction parameters to control coke formation is necessary. Several strategies have been proposed, such as utilizing CO 2 or H 2 to gasify the carbon deposited on the catalyst, thereby regenerating the catalyst [35,36]. Moreover, the efficiency of carbon gasification can be significantly improved by enhancing the physicochemical properties of the catalyst, such as increasing the mobility of lattice oxygen ions and surface oxygen vacancies over Ni catalysts supported on ceria [37].…”

Section: Deep Methane Crackingmentioning

confidence: 99%

Recent Advances in Coke Management for Dry Reforming of Methane over Ni-Based Catalysts

Xu,

Park

2024

Catalysts

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The dry reforming of methane (DRM) is a promising method for controlling greenhouse gas emissions by converting CO2 and CH4 into syngas, a mixture of CO and H2. Ni-based catalysts have been intensively investigated for their use in the DRM. However, they are limited by the formation of carbonaceous materials on their surfaces. In this review, we explore carbon-induced catalyst deactivation mechanisms and summarize the recent research progress in controlling and mitigating carbon deposition by developing coke-resistant Ni-based catalysts. This review emphasizes the significance of support, alloy, and catalyst structural strategies, and the importance of comprehending the interactions between catalyst components to achieve improved catalytic performance and stability.

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“…Ni/YZr catalyst showed about 63.7% H 2 yield for 420‐min time on steam at 700°C. Recently, barium‐, ceria‐, and holmium‐like promoters over Ni/YZr catalyst were investigated for DRM and showed constant ∼79%, ∼80%, and ∼84% H 2 yield during the 420‐min time on stream at 800°C, respectively 5–7 . The selection of effective promoters over Ni/YZr catalyst still needs a committed investigation.…”

Section: Introductionmentioning

confidence: 99%

Rh promoted Ni over yttria–zirconia supported catalyst for hydrogen‐rich syngas production through dry reforming of methane

Al‐Fatesh

Acharya

Osman

et al. 2023

Energy Science & Engineering

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Rh‐promoted YZr‐supported Ni catalyst (5Ni/YZr) is investigated for DRM and characterized with X‐ray diffraction, Raman, infrared spectroscopy, cyclic reduction–oxidation–reduction temperature programmed experiment, thermogravimetry, and transmission electron microscope. Over 5Ni/YZr, some active sites become inactive under the CO2 stream and limit H2 yield to ∼71%. Upon 4 wt% Rh addition over 5Ni/YZr; more than one type of stable active sites (Rh and Ni) generates, moderate basic sites are enhanced, wide ranges of CO2‐interacted surface species (especially bidentate CO2‐adsorbed species) are grown and graphitic carbon proportion over spent catalyst declines. This resulted in 87.35% H2 yield and 86.73% CO yield up to 420 min. 5Ni4Rh/YZr catalyst maintains ∼80% H2 yield at the end of 27 h of DRM reaction.

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Holmium promoted yttria-zirconia supported Ni catalyst for H2 production via dry reforming of methane

Cited by 23 publications

References 44 publications

Alumina-Magnesia-Supported Ni for Hydrogen Production via the Dry Reforming of Methane: A Cost-Effective Catalyst System

Alumina-Magnesia-Supported Ni for Hydrogen Production via the Dry Reforming of Methane: A Cost-Effective Catalyst System

Recent Advances in Coke Management for Dry Reforming of Methane over Ni-Based Catalysts

Rh promoted Ni over yttria–zirconia supported catalyst for hydrogen‐rich syngas production through dry reforming of methane

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