Carbon dioxide reforming of methane over cobalt catalysts supported on hydrotalcite and metal oxides

Guo, Yu; Lu, Junying; Liu, Qirui; Bai, Xiaoli; Gao, Lijun; Tu, Weixia; Wang, Zhou‐jun

doi:10.1016/j.catcom.2018.08.017

Cited by 25 publications

(16 citation statements)

References 21 publications

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“…The NiMgAl/SiC catalyst was prepared by the co‐precipitation method from the hydrotalcite precursor . Specifically, 5.2 mmol Ni(NO 3 ) 2 •6H 2 O (Sigma Aldrich, St Louis, MO, USA, 99.999%), 7.5 mmol Mg(NO 3 ) 2 •6H 2 O (Aladdin, Shanghai, China, 99.99%) and 2.5 mmol Al(NO 3 ) 3 •9H 2 O (Aladdin, Shanghai, China, 99.99%) were dissolved in 30 mL deionized water to form solution A.…”

Section: Methodsmentioning

confidence: 99%

“…The NiMgAl/SiC catalyst was prepared by the co-precipitation method from the hydrotalcite precursor. 25 were dissolved in 30 mL deionized water to form solution A. In the meantime, 5.0 mmol sodium carbonate (Na 2 CO 3 ) (Aladdin, Shanghai, China, 99.8%) and 24.3 mmol sodium hydroxide (NaOH) (Aladdin, Shanghai, China, 98%) were dissolved in the same volume of deionized water to form solution B.…”

Section: Catalyst Synthesismentioning

confidence: 99%

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Enhanced low‐temperature activity for CO₂ methanation over NiMgAl/SiC composite catalysts

Wang

Liu

et al. 2019

J of Chemical Tech & Biotech

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Background Carbon dioxide (CO2) methanation is an important reaction in energy and environmental fields, which aims to convert CO2 into natural gas with hydrogen (H2) from renewable sources. One of the technical bottlenecks for CO2 methanation is the lack of feasible catalysts, especially the ones with satisfactory low‐temperature activity. Results The NiMgAl/SiC composite catalyst that was derived from hydrotalcite precursor on the SiC substrate possessed enhanced low‐temperature activity and excellent long‐term stability in CO2 methanation. For the low‐temperature activity, CO2 conversion reached 63.8% and 74.5% at 300 and 325 °C respectively. For the long‐term stability, CO2 conversion merely decreased from 78.4% to 76.9% after 50 h of reaction at 400 °C. Conclusion The NiMgAl/SiC composite catalyst was successfully synthesized by the co‐precipitation method, which exhibited enhanced low‐temperature methanation activity compared with the NiMgAl and Ni/SiC catalysts. The superior low‐temperature activity was mainly ascribed to two structural parameters. One was the small nickel (Ni) nanoparticle size, which was endowed by the unique structure of the hydrotalcite precursor. The other one was the high reducibility of Ni species, which was rendered by the appropriate metal‐support interactions. The present work provides guidelines for the synthesis of highly efficient composite catalysts for energy and environmental applications. © 2019 Society of Chemical Industry

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Section: Methodsmentioning

confidence: 99%

Section: Catalyst Synthesismentioning

confidence: 99%

Enhanced low‐temperature activity for CO₂ methanation over NiMgAl/SiC composite catalysts

Wang

Liu

et al. 2019

J of Chemical Tech & Biotech

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“…However, decreased catalytic performance was observed during higher Fe promotions. Advances in Chemical Engineering and Science The catalytic activity of cobalt (Co) supported hydrotalcite (Mg, Al) catalyst on DRM was studied by Guo et al, [94]. They synthesized Co/MgAl catalyst having a hydrotalcite-like structure of MgAl.…”

Section: Ht Based Catalysts For Co 2 or Dry Reforming Of Methane (Drm)mentioning

confidence: 99%

Hydrogen Production Performances via Steam Reforming over Hydrotalcite Derived Catalyst: A Sustainable Energy Production Review

Salam¹,

Hossain²,

Papri³

et al. 2020

ACES

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The review outcome represents the optimum catalytic conditions for the production of hydrogen using hydrotalcite derived catalysts. It covers dry and steam reforming of methane, steam reforming of methanol and ethanol to hydrogen. The review also revealed the specific properties of hydrotalcite derived catalysts for the reactions. Among catalyst investigated, Ni & Fe promoted Al-Mg containing hydrotalcite catalyst perform best (99%) for dry reforming of methane at 250˚C. For steam methane reforming, Ni containing ca-aluminates hydrotalcite catalyst act as the best (99%) at 550˚C. Cu-supported Zn-Al-containing catalyst performs the best (99.98%) for steam reforming of methanol at 300˚C whereas Cu impregnated Mg-Al containing hydrotalcite is the best (99%) for steam reforming of ethanol at 200˚C-600˚C. It's (HT) tunable and versatile textural and morphological properties showed excellent catalytic performances for different industrial processes and in sustainable hydrogen production.

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“…It is also used in catalysts for cyclohexane oxidation [2], methane decomposition [3,4] , Fischer Tropsch synthesis [5,6], methane or ethanol reforming for hydrogen production [3,4,7,8,9], including fuel cell studies [10], although it shows lower selectivity to hydrogen compared to nickel catalyst [11], pollutant degradation [12] and others. Cobalt catalyst activity and selectivity depends considerably on the support type and preparation method [7,13,14,15]. For example, cobalt based supported catalysts were evaluated in dry methane reforming and showed high dependence on the support nature (MgO, CaO, or SiO 2 ) [16].…”

Section: Introductionmentioning

confidence: 99%

“…For example, cobalt based supported catalysts were evaluated in dry methane reforming and showed high dependence on the support nature (MgO, CaO, or SiO 2 ) [16]. Nowadays, many studies are based on cobalt supported over different oxides, besides traditional alumina [7,8,14] .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Catalytic Evaluation of Cobalt and Niobium Oxide Solids Modified with Alkaline Earth Metals

et al. 2020

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Cobalt and niobium oxide solids modified with alkaline earth metals (Mg, Ca, and Sr) were synthesized and characterized to compare the second element effect on the catalyst structural and chemical properties. The materials were prepared by co-precipitation of cobalt nitrate and niobium oxalate solutions using ammonium hydroxide as precipitating agent. The samples were characterized by XRD, SEM, Ra-man, BET, TPR, ammonia TPD and cyclohexane dehydrogenation reaction (CHD). Results showed that Mg, Ca or Sr addition changed cobalt niobate crystalline structure, leading to alkaline earth metal nio-bates with lower crystallinity. It was observed that Mg, Ca or Sr increased the solids acidity and changed cobalt niobate reduction behavior so that the lowest amount of metallic cobalt was obtained when Mg was incorporated. Modifiers also decreased cobalt niobate dehydrogenation activity. This effect was higher with Mg or Sr addition.

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Carbon dioxide reforming of methane over cobalt catalysts supported on hydrotalcite and metal oxides

Cited by 25 publications

References 21 publications

Enhanced low‐temperature activity for CO₂ methanation over NiMgAl/SiC composite catalysts

Enhanced low‐temperature activity for CO₂ methanation over NiMgAl/SiC composite catalysts

Hydrogen Production Performances via Steam Reforming over Hydrotalcite Derived Catalyst: A Sustainable Energy Production Review

Synthesis, Characterization and Catalytic Evaluation of Cobalt and Niobium Oxide Solids Modified with Alkaline Earth Metals

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Carbon dioxide reforming of methane over cobalt catalysts supported on hydrotalcite and metal oxides

Cited by 25 publications

References 21 publications

Enhanced low‐temperature activity for CO2 methanation over NiMgAl/SiC composite catalysts

Enhanced low‐temperature activity for CO2 methanation over NiMgAl/SiC composite catalysts

Hydrogen Production Performances via Steam Reforming over Hydrotalcite Derived Catalyst: A Sustainable Energy Production Review

Synthesis, Characterization and Catalytic Evaluation of Cobalt and Niobium Oxide Solids Modified with Alkaline Earth Metals

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Enhanced low‐temperature activity for CO₂ methanation over NiMgAl/SiC composite catalysts

Enhanced low‐temperature activity for CO₂ methanation over NiMgAl/SiC composite catalysts