Syngas production by the CO 2 reforming of CH 4 over Ni–Co–Mg–Al catalysts obtained from hydrotalcite precursors

Tanios, Carole; Bsaibes, Sandy; Gennequin, Cédric; Labaki, Madona; Cazier, Fabrice; Billet, Sylvain; Tidahy, Haingomalala Lucette; Nsouli, B.; Aboukaı̈s, Antoine; Abi‐Aad, Edmond

doi:10.1016/j.ijhydene.2017.01.120

Cited by 54 publications

(26 citation statements)

References 56 publications

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“…However,l imited availability and high cost of noble metals restrict their practical applicationi nl arge scale. [14] The behavior of carbond eposition on the Cobased catalysts is considerably different from that on the Nibased ones. [8] The Ni-based catalysts showed high activity in DRM.…”

Section: Introductionmentioning

confidence: 99%

“…[13] On the other hand, the Co-based catalysts displayed coking resistance because of the highera ffinity between Co and oxygen. [14] The behavior of carbond eposition on the Cobased catalysts is considerably different from that on the Nibased ones. Ruckenstei and Wang [15] found that Co/MgOe xhibitedh igh activity and stability among various oxides( Al 2 O 3 , CaO, MgO, SrO, andB aO) supported catalysts since Co 3 O 4 and MgO can form as olid solution in which there is as trong interaction betweenC oa nd Mg entities, leading to the generation of small metallic Co clusters, and hindering clustera ggregation.…”

Section: Introductionmentioning

confidence: 99%

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How do Core–Shell Structure Features Impact on the Activity/Stability of the Co‐based Catalyst in Dry Reforming of Methane?

Pang

Zhong

et al. 2018

ChemCatChem

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Dry reforming of methane has been systematically investigated over a series of x‐Co@SiO2‐y catalysts where x is the Co particle size ranging from 11.1 to 121.3 nm while y denotes the silica shell thickness ranging from 6.0 to 21.9 nm. Various techniques including TEM, XRD, H2‐TPR/‐TPD, XPS, BET, O2‐TPO, TG, and H2‐TPSR‐MS were employed to characterize physicochemical properties of catalysts. H2‐TPR and XPS results indicate that the core–shell interaction is dependent on the core size: the smaller the Co particle size is; the stronger the core–shell interaction. The investigations employing H2‐TRSR‐MS and XPS on the spent catalysts demonstrated that a fraction of metallic Co was re‐oxidized on a large‐core catalyst such as 121.3‐Co@SiO2‐72.2 during the reaction, and such oxidation leads to lower catalytic activity and stability. O2‐TPO results indicated that the catalyst with smaller core size caused significant coking. TG analysis together with TEM investigation on the used samples suggested that carbon deposition is notably core‐size‐dependent and responsible for deactivation of the small‐core catalyst. Among various core–shell structured catalysts, 27.8‐Co@SiO2‐14.3 showed superior activity and durability, owing to the well‐balanced property between coking and anti‐oxidation of Co cores.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

How do Core–Shell Structure Features Impact on the Activity/Stability of the Co‐based Catalyst in Dry Reforming of Methane?

Pang

Zhong

et al. 2018

ChemCatChem

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“…The as-obtained catalysts showed a strong interaction between the active component (Ni and Co) and the catalytic support [ 106 ]. However, Tanios et al [ 107 ] discovered that the Ni and Co synergistic effect greatly improved the catalytic properties and prevented carbon formation. The 1Co-2Ni-LDH catalyst exhibited the best catalytic performance and resulted in the least coke, achieving a 98.3% CH 4 conversion that decreased to 1.7% after 50 h of reaction at 800 °C, much higher than that of Co/γ-Al 2 O 3 , which resulted in a 56.2% CH 4 conversion and complete deactivation after the 50-h test; while the optimal Co/Ni ratio was one when using aluminum nitrate as the trivalent ion source.…”

Section: Methane Reformingmentioning

confidence: 99%

Two-Dimensional Layered Double Hydroxides for Reactions of Methanation and Methane Reforming in C1 Chemistry

Altaf

et al. 2018

Materials

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CH4 as the paramount ingredient of natural gas plays an eminent role in C1 chemistry. CH4 catalytically converted to syngas is a significant route to transmute methane into high value-added chemicals. Moreover, the CO/CO2 methanation reaction is one of the potent technologies for CO2 valorization and the coal-derived natural gas production process. Due to the high thermal stability and high extent of dispersion of metallic particles, two-dimensional mixed metal oxides through calcined layered double hydroxides (LDHs) precursors are considered as the suitable supports or catalysts for both the reaction of methanation and methane reforming. The LDHs displayed compositional flexibility, small crystal sizes, high surface area and excellent basic properties. In this paper, we review previous works of LDHs applied in the reaction of both methanation and methane reforming, focus on the LDH-derived catalysts, which exhibit better catalytic performance and thermal stability than conventional catalysts prepared by impregnation method and also discuss the anti-coke ability and anti-sintering ability of LDH-derived catalysts. We believe that LDH-derived catalysts are promising materials in the heterogeneous catalytic field and provide new insight for the design of advance LDH-derived catalysts worthy of future research.

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“…The reduction of HTCs can be eminently suitable for the formation of highly dispersed and well-supported metallic particles [17][18][19][20][21][24][25][26]. Hydrotalcite-derived mixed oxides have been used as a catalyst in different catalytic reactions, such as steam reforming of ethanol [20,27,28], CO 2 hydrogenation to methanol [29,30], CO 2 reforming of methane for syngas production [31][32][33], formation of alcohols from syngas [19,34,35], and hydrocarbon production through FT reaction [36]. In the present study, CoMn catalysts derived from hydrotalcite-like precursors, with a Co/Mn molar ratio of 2, were synthesized using different preparation methods, and their catalytic activities in the FT reaction were evaluated.…”

Section: Introductionmentioning

confidence: 99%

CoMn Catalysts Derived from Hydrotalcite-Like Precursors for Direct Conversion of Syngas to Fuel Range Hydrocarbons

Gholami¹,

Tišler²,

Velvarská³

et al. 2020

Catalysts

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Two different groups of CoMn catalysts derived from hydrotalcite-like precursors were prepared through the co-precipitation method, and their performance in the direct production of gasoline and jet fuel range hydrocarbons through Fischer–Tropsch (FT) synthesis was evaluated in a batch autoclave reactor at 240 °C and 7 MPa and H2/CO of 2. The physicochemical properties of the prepared catalysts were investigated and characterized using different characterization techniques. Catalyst performance was significantly affected by the catalyst preparation method. The crystalline phase of the catalyst prepared using KOH contained Co3O4 and some Co2MnO4.5 spinels, with a lower reducibility and catalytic activity than cobalt oxide. The available cobalt active sites are responsible for the chain growth, and the accessible acid sites are responsible for the cracking and isomerization. The catalysts prepared using KOH + K2CO3 mixture as a precipitant agent exhibited a high selectivity of 51–61% for gasoline (C5–C10) and 30–50% for jet fuel (C8–C16) range hydrocarbons compared with catalysts precipitated by KOH. The CoMn-HTC-III catalyst with the highest number of available acid sites showed the highest selectivity to C5–C10 hydrocarbons, which demonstrates that a high Brønsted acidity leads to the high degree of cracking of FT products. The CO conversion did not significantly change, and it was around 35–39% for all catalysts. Owing to the poor activity in the water-gas shift reaction, CO2 formation was less than 2% in all the catalysts.

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Syngas production by the CO 2 reforming of CH 4 over Ni–Co–Mg–Al catalysts obtained from hydrotalcite precursors

Cited by 54 publications

References 56 publications

How do Core–Shell Structure Features Impact on the Activity/Stability of the Co‐based Catalyst in Dry Reforming of Methane?

How do Core–Shell Structure Features Impact on the Activity/Stability of the Co‐based Catalyst in Dry Reforming of Methane?

Two-Dimensional Layered Double Hydroxides for Reactions of Methanation and Methane Reforming in C1 Chemistry

CoMn Catalysts Derived from Hydrotalcite-Like Precursors for Direct Conversion of Syngas to Fuel Range Hydrocarbons

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