Dry reforming of methane over CeO2-ZnAl2O4 supported Ni and Ni-Co nano-catalysts

Movasati, Azam; Alavi, Seyed Mehdi; Mazloom, Golshan

doi:10.1016/j.fuel.2018.09.069

Cited by 80 publications

(37 citation statements)

References 45 publications

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“…The enhancement in catalytic activity with Co addition was also reported by Movasati et al , Al‐Fatesh et al , and Liu et al for 12.5%Ni/CeO 2 ‐ZnAl 2 O 4 , 2.5%Co‐2.5%Ni/Al 2 O 3 ‐ZrO 2 , and 7%Ni‐3%Co/ γ ‐Al 2 O 3 ‐HY, respectively. The catalytic activity and stability of the bimetallic catalysts was higher than that of the monometallic catalysts due to the synergism between Co and Ni which led to a higher number of active and metal dispersion as well as stronger metal‐support interaction.…”

Section: Dry Reforming Of Methane Over Ni/co‐based Catalystsmentioning

confidence: 99%

High‐Performance Bimetallic Catalysts for Low‐Temperature Carbon Dioxide Reforming of Methane

et al. 2020

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Catalytic dry reforming of methane (DRM) is a promising way for renewable syngas production due to the utilization of both CO2 and CH4 greenhouse gases. Current approaches were made to improve the catalytic activity and coke resistance by introducing a second metal into the Ni‐based catalytic system. This bimetallic catalytic system showed a significant improvement in coke resistance due to the synergistic effect of both metals towards the reaction. This review summarizes recent developments in bimetallic catalysts in DRM which focused on the evaluation of catalysts, deactivation studies, and reaction mechanisms of developed bimetallic catalysts.

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Section: Dry Reforming Of Methane Over Ni/co‐based Catalystsmentioning

confidence: 99%

High‐Performance Bimetallic Catalysts for Low‐Temperature Carbon Dioxide Reforming of Methane

et al. 2020

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“…This could be explained due to partial pore plugging. In addition, the incorporation of catalysts reduced the pore diameter, as the presence of nanoparticles diffused into the porosities resulting in a thinner pore (Movasati et al, 2019). This suggests that MOF-derived catalysts deposit inside the pore of the alumina supporter.…”

Section: Catalytic Testmentioning

confidence: 99%

Preparation of Metal Organic Framework (MOF) Derived Bimetallic Catalyst for Dry Reforming of Methane

Chin¹,

Leong²,

Lu³

et al. 2019

IJTech

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In the past decade, efforts have been focused on development of catalyst to show high activity for dry reforming of methane (DRM). The development of catalyst has been crucial to be carried out as this may significantly reduce the concentration of most common greenhouse gases, namely methane (CH4) and carbon dioxide (CO2) in the atmosphere. In present work, a series of varying molar ratio of Ni:Ce metal organic framework (MOF) derived catalysts were grown on alumina in one step. The synthesis steps were in accordance to reported solvothermal method for the syntheses of NH2-MIL-88B with slight modification. This was followed by reduction at 500C in hydrogen environment for 1 h. The physical and chemical properties of the catalysts were probed by powder XRD, BET surface area analysis, EDX, ICP, CO2-TPD and H2-TPR. XRD showed that diffraction patterns were in agreement with the diffraction pattern of MOF synthesized in previous work, thus confirmed the successful formation of the MOF structure. The variation in the molar ratio of Ni:Ce did not show significant difference in the diffraction pattern of the MOF-derived catalysts. For reduction phase, sharp diffraction peaks were detected at 2θ = 44.5, 51.85, and 76.37, which can be indexed to (1 1 1), (2 0 0) and (2 2 0) planes of face-centered cubic (FCC) metallic Ni, respectively. The addition of Ce promoted smaller particle size of Ni, ranging from 4.6 nm to 6.88 nm. The presence of CeO2 was observed at 2θ = 28.6, 33.0, and 56.4. Elemental distribution was compared between EDX and ICP-OES. ICP-OES and EDX analyses indicated that weight percent of bimetallic metal of Ni and Ce was consistent, in which the amount of respective metal obeyed the ratio trend of the metal precursors added during the MOF synthesis. This suggested the homogeneity of the catalyst, even though EDX showed relatively higher weight percent than ICP-OES. The catalytic performance of catalysts showed that 1Ni1Ce exhibited better conversion of CH4 and CO2, with 63.5% and 86.8% respectively at 800 o C, and the conversion tend to increase at a higher temperature. The results were convincing for the design of a performing catalyst for DRM process.

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“…In recent years, the Ni-Co bimetallic catalysts have attracted more and more attention because of their outstanding catalytic performances. In the Ni-Co bimetal catalyst, the addition of Co can tune the size of Ni and improve the gasification of coke by enhancing CO 2 chemisorption, which could reduce the coke yield and further increase the activity and stability of the catalyst (Movasati et al, 2019;Liu et al, in press). Previous reports also found that the Ni/Co atomic ratio is a key factor affecting the catalytic performance and only the appropriate Co/Ni ratio has a synergistic Ni-Co interaction, which improved the catalytic activity and stability of the catalyst (Xu et al, 2016a;Pang et al, 2018).…”

Section: Bimetallic Catalystsmentioning

confidence: 99%

Recent Progresses in the Design and Fabrication of Highly Efficient Ni-Based Catalysts With Advanced Catalytic Activity and Enhanced Anti-coke Performance Toward CO2 Reforming of Methane

Chen

et al. 2020

Front. Chem.

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CO 2 reforming of methane (CRM) can effectively convert two greenhouse gases (CO 2 and CH 4) into syngas (CO + H 2). This process can achieve the efficient resource utilization of CO 2 and CH 4 and reduce greenhouse gases. Therefore, CRM has been considered as a significantly promising route to solve environmental problems caused by greenhouse effect. Ni-based catalysts have been widely investigated in CRM reactions due to their various advantages, such as high catalytic activity, low price, and abundant reserves. However, Ni-based catalysts usually suffer from rapid deactivation because of thermal sintering of metallic Ni active sites and surface coke deposition, which restricted the industrialization of Ni-based catalysts toward the CRM process. In order to address these challenges, scientists all around the world have devoted great efforts to investigating various influencing factors, such as the option of appropriate supports and promoters and the construction of strong metal-support interaction. Therefore, we carefully summarized recent development in the design and preparation of Ni-based catalysts with advanced catalytic activity and enhanced anti-coke performance toward CRM reactions in this review. Specifically, recent progresses of Ni-based catalysts with different supports, additives, preparation methods, and so on, have been summarized in detail. Furthermore, recent development of reaction mechanism studies over Ni-based catalysts was also covered by this review. Finally, it is prospected that the Ni-based catalyst supported by an ordered mesoporous framework and the combined reforming of methane will become the future development trend.

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Dry reforming of methane over CeO2-ZnAl2O4 supported Ni and Ni-Co nano-catalysts

Cited by 80 publications

References 45 publications

High‐Performance Bimetallic Catalysts for Low‐Temperature Carbon Dioxide Reforming of Methane

High‐Performance Bimetallic Catalysts for Low‐Temperature Carbon Dioxide Reforming of Methane

Preparation of Metal Organic Framework (MOF) Derived Bimetallic Catalyst for Dry Reforming of Methane

Recent Progresses in the Design and Fabrication of Highly Efficient Ni-Based Catalysts With Advanced Catalytic Activity and Enhanced Anti-coke Performance Toward CO2 Reforming of Methane

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