Dry reforming of methane for hydrogen production over Ni Co catalysts: Effect of Nb Zr promoters

Ghani, Nur Azeanni Abd; Azapour, Abbas; Muhammad, Anuar Faua'ad Syed; Abdullah, Bawadi

doi:10.1016/j.ijhydene.2018.05.153

Cited by 37 publications

(14 citation statements)

References 33 publications

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“…The same as un-promoted 9Ni-9Co/Al 2 O 3 catalyst in Fig. 2a [18]. However by addition of the Y promoter to all of these catalysts, both the pore volume and BET surface area are enhanced as it causes a good dispersion of Ni and/or Co active sites on the catalyst surface.…”

Section: Fresh Catalysts Characterization Resultsmentioning

confidence: 71%

“…The catalysts surface area is an important factor for catalytic DRM performance because an increment in the catalyst surface area had led to a higher methane conversion [18]. Therefore, it can be predicted that 5Y-9Ni-9Co/Al 2 O 3 catalyst performance in the process will be better than other promoted/non-promoted catalysts.…”

Section: Fresh Catalysts Characterization Resultsmentioning

confidence: 99%

“…In the DRM process, CH 4 and CO 2 that are known as ozone-depleting gases, are converted to the synthetic gas. Accordingly, in comparison to SRM and POM processes in the industrial scale, DRM is more preferred because of an eco-friendly and clean production of fuel [18]. The major reactions and side reactions in gas phase DRM are:…”

Section: Introductionmentioning

confidence: 99%

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RETRACTED ARTICLE: Promoted Nickel–Cobalt Bimetallic Catalysts for Biogas Reforming

et al. 2021

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The catalytic performance of Ni, Co, and Ni-Co-based catalysts on Al 2 O 3 support are investigated in the dry methane reforming reaction. Besides, the influence of La or Y promoters on catalytic activity and structural properties of synthesized catalysts are examined in this paper. The prepared catalysts are characterized using N 2 Adsorption/Desorption, FESEM, EDX, and XRD techniques. Higher average CH 4 and CO 2 conversions, as well as hydrogen yield, are obtained using Ni-Co catalyst with equal weight ratios. This could be the result of better dispersion of active sites according to the FESEM images and thus higher BET surface area of this catalyst compared with other un-promoted ones. Although the addition of La does not enhance the catalytic activity and structural properties of the 9Ni-9Co/Al 2 O 3 sample, the presence of Y 2 O 3 particles has a positive effect on both mentioned catalyst features. The maximum CH 4 conversion of 99.39%, CO 2 conversion of 92.38%, H 2 yield of 86.20% and H 2 /CO molar ratio of 1.50 are achieved using 5Y-9Ni-9Co/Al 2 O 3 at 700 °C. Besides, this catalyst shows lower deposited coke and higher stability compared with other promoted/un-promoted catalysts. The comparison between the activity of 5Y-9Ni-9Co/Al 2 O 3 and industrial 18%Ni/Al 2 O 3 during 11 h DRM shows that although 18%Ni/ Al 2 O 3 has higher conversions at first 9 h, its activity is decreased more than 5Y-9Ni-9Co/Al 2 O 3 due to the coke deposition.

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Section: Fresh Catalysts Characterization Resultsmentioning

confidence: 71%

Section: Fresh Catalysts Characterization Resultsmentioning

confidence: 99%

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RETRACTED ARTICLE: Promoted Nickel–Cobalt Bimetallic Catalysts for Biogas Reforming

et al. 2021

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“…Table 1 shows catalytic activity in terms of H 2 yield for different supported catalyst systems over different reaction conditions. Ceria supported Ni catalyst, SiO 2 supported Ni catalyst, ZrO 2 supported Nickel catalyst and Al 2 O 3 supported Ni catalyst showed H 2 yield 14%, 36%, 43%, and 63% respectively 6,7,11,12 . Promotional addition of modifier strontium (0.75% Sr) in alumina supported Ni catalyst strengthened the metal support interaction and enhanced basicity 13 .…”

Section: Introductionmentioning

confidence: 96%

“…MgO promoted Al 2 O 3 supported Ni‐Co bimetallic catalyst system achieved 94% H 2 yield (H 2 /CO = 0.96) with excellent coke resistance due to the basic nature of MgO and strong interaction between Ni and MgO 4 . Ni‐Zr promoted Al 2 O 3 ‐MgO supported bimetallic Ni‐Co catalyst (prepared by sol‐gel) had showed 77% H 2 yield 12 . Bimetallic Ni‐Co dispersed on Al 2 O 3 support, 5 Al 2 O 3 ‐MgO support, 4 and Al 2 O 3 ‐MgO‐ZrO 2 14 had 86% H 2 yield (H 2 /CO = 0.90), 90% (H 2 /CO = 0.97), and 97% H 2 yield (97% CO yield) respectively.…”

Section: Introductionmentioning

confidence: 99%

Ceria promoted phosphate‐zirconia supported Ni catalyst for hydrogen rich syngas production through dry reforming of methane

Khatri¹,

Fakeeha

Kasim

et al. 2021

Int J Energy Res

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Summary Ceria promoted phosphate‐zirconia supported nickel catalyst (10Ni1Ce/PZr; x = 0, 1, 1.5, 2, 2.5, 3, 5 wt%) are prepared and characterized by XRD, SEM, SEM‐EDX, CH4‐TPSR, NH3‐TPD, cyclic H2TPR‐CO2TPD‐H2TPR, and TPH. Ceria addition induces surface reducibility, exposes reduced phases of NiO and Ni2P2O7 as CH4 decomposition sites, and persuades additional CO2 adsorbed species as formate species over the catalyst surface. It also switches mobile oxygen in the lattice and thereafter oxide vacancy is replenished by oxygen from CO2 to a great extent. Altogether, 1 wt% ceria loading (10Ni1Ce/PZr) ensures more than 90% H2 yield (H2/CO = 0.96) whereas 2 wt% ceria loading inputs constancy in catalytic performance up to 440 min TOS. Up to 3 wt% ceria loading, 97% hydrogen yield (H2/CO ~1) is observed. Catalytic performance deteriorated above that 3 wt% ceria loading due to shading the catalytic active site or reoxidation of metallic nickel by excess ceria.

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Hydrogen‐rich syngas production from bi‐reforming of greenhouse gases over zirconia modified Ni/ MgO catalyst

Farooqi

Yusuf

Zabidi

et al. 2021

Intl J of Energy Research

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Bi-reforming of methane (BRM) is gaining an increase interest due to the critical requirements to mitigate global warming and provide alternative energy resources. However, there has been a serious challenge to the scale-up of the process to commercial production due to the catalyst deactivation. In the present study, the influence of ZrO 2 modifications on the activity and stability of MgO-supported Ni catalyst in the BRM reaction was investigated. The ZrO 2 -MgO mixed oxide support was prepared by co-precipitation method with varia-

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Dry reforming of methane for hydrogen production over Ni Co catalysts: Effect of Nb Zr promoters

Cited by 37 publications

References 33 publications

RETRACTED ARTICLE: Promoted Nickel–Cobalt Bimetallic Catalysts for Biogas Reforming

RETRACTED ARTICLE: Promoted Nickel–Cobalt Bimetallic Catalysts for Biogas Reforming

Ceria promoted phosphate‐zirconia supported Ni catalyst for hydrogen rich syngas production through dry reforming of methane

Hydrogen‐rich syngas production from bi‐reforming of greenhouse gases over zirconia modified Ni/ MgO catalyst

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