Catalytic test of supported Ni catalysts with core/shell structure for dry reforming of methane

Abstract:Catalytic dry (CO2) reforming of waste plastics was carried out in a two stage, pyrolysis-catalytic reforming fixed bed reactor to optimise the production of syngas (H2 + CO). The effects of changing the process parameters of, catalyst preparation conditions, catalyst temperature, CO2 input rate and catalyst:plastic ratio were investigated. The plastics used was a mixture of plastics simulating that found in municipal solid waste and the catalyst used was Ni-Co-Al2O3. The results showed that changing each of the process conditions investigated, all significantly influenced syngas production. An increase of 17 % of syngas production was achieved from the experiment with the catalyst prepared by rising-pH technique compared to preparation via the impregnation method. The optimum syngas production of 148.6 mmolsyngas g -1 swp was attained at the catalytic dry reforming temperature of 800 °C and catalyst:plastic ratio of 0.5. The increase of CO2 input rate promoted a higher yield of syngas.

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“…In addition, it has been reported that the dry reforming reaction is favourable at high temperature [21][22][23].…”

Section: Effect Of Catalyst Preparation Methodsmentioning

confidence: 99%

Pyrolysis-catalytic dry (CO 2 ) reforming of waste plastics for syngas production: Influence of process parameters

Saad

Williams

2017

Fuel

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“…That is, the SiO 2 support was impregnated with the corresponding nitrate (Ni(NO 3 ) 2 and Zr(NO 3 ) 4 or Mn(NO 3 ) 2 ) simultaneously. The Ni-ZrO x -MnO x /SiO 2 catalyst prepared by impregnation method where SiO 2 support was co-impregnated with the Ni(NO 3 ) 2 , Zr(NO 3 ) 4 and Mn(NO 3 ) 2 mixed aqueous solution [20]. After impregnated for 24 h at 20 • C, the excess solvent (deionized water) was removed by heating at 80 • C and then dried at 110 • C for 4 h. Finally, the sample was calcined at 800 • C for 5 h in air, obtaining the Ni-ZrO x -MnO x /SiO 2 catalyst.…”

Section: Catalyst Preparationmentioning

confidence: 99%

“…Thus, the DRM reaction can not only produce the energy carrier synthesis gas but also mitigate the emission of warming gases [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

The influence of reduction temperature on the performance of ZrOx/Ni-MnOx/SiO2 catalyst for low-temperature CO2 reforming of methane

Wang

Shi

et al. 2017

Catalysis Today

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“…Compared with conventional hydrogen production from steam methane reformation [3][4][5], dry reforming [6,7], and partial oxidation of methane [8][9][10][11], pure hydrogen can be produced from catalytic methane decomposition (CMD) without by-products, such as CO and CO 2 . Therefore, CMD has become one of the most promising methods to prepare hydrogen and has received considerable attention.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Modified Red Mud-Supported Fe Catalysts for Hydrogen Production by Catalytic Methane Decomposition

Liu

Fang

et al. 2017

Journal of Nanomaterials

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A modified red mud-(MRM-) supported Fe catalyst ( Fe/MRM) was prepared using the homogeneous precipitation method and applied to methane decomposition to produce hydrogen. The TEM and SEM-EDX results suggested that the particle sizes of the Fe/MRM catalysts were much smaller than that of raw red mud (RM), and the active metal Fe was evenly distributed over the catalyst structure. Moreover, BET results indicated that the surface areas and pore volumes of the catalysts were significantly improved, and the pore sizes of Fe/MRM were distributed from 5 to 12 nm, which is typical for a mesoporous material. The activities of those catalysts for the catalytic decomposition of methane were studied at atmospheric pressure at a moderate temperature of 650 ∘ C; the results showed that the Fe/MRM catalysts were more active than RM and MRM. The methane conversion curves of Fe/MRM catalysts exhibited similar variation tendencies (three-step) during the reaction despite different Fe contents, and the loading amount of Fe clearly affected the activity of the catalysts.

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Catalytic test of supported Ni catalysts with core/shell structure for dry reforming of methane

Cited by 102 publications

References 27 publications

Pyrolysis-catalytic dry (CO 2 ) reforming of waste plastics for syngas production: Influence of process parameters

Pyrolysis-catalytic dry (CO 2 ) reforming of waste plastics for syngas production: Influence of process parameters

The influence of reduction temperature on the performance of ZrOx/Ni-MnOx/SiO2 catalyst for low-temperature CO2 reforming of methane

Preparation of Modified Red Mud-Supported Fe Catalysts for Hydrogen Production by Catalytic Methane Decomposition

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