Manganese-promoted nickel/alumina catalysts for hydrogen production via auto-thermal reforming of ethanol

Huang, Lihong; Zhang, Fangbai; Chen, Rongrong; Hsu, Andrew T.

doi:10.1016/j.ijhydene.2012.08.050

Cited by 20 publications

(13 citation statements)

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“…Several catalytic reactions using manganese-oxide-based MMO have been reported. Examples include the catalytic reaction of hydrogen production via autothermal reforming of ethanol [ 33 ], steam reforming of tar from biomass pyrolysis [ 34 ], methane combustion at low temperature [ 35 ], and enhanced glucose electrooxidation [ 36 ] carried out using nickel manganese MMO. Our group has been involved in the synthesis of various MMOs [ 37 ] and evaluated their catalytic performance for several organic transformations [ 38 ].…”

Section: Introductionmentioning

confidence: 99%

Vanadia supported on nickel manganese oxide nanocatalysts for the catalytic oxidation of aromatic alcohols

et al. 2015

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Vanadia nanoparticles supported on nickel manganese mixed oxides were synthesized by co-precipitation method. The catalytic properties of these materials were investigated for the oxidation of benzyl alcohol using molecular oxygen as oxidant. It was observed that the calcination temperature and the size of particles play an important role in the catalytic process. The catalyst was evaluated for its oxidation property against aliphatic and aromatic alcohols, which was found to display selectivity towards aromatic alcohols. The samples were characterized by employing scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller analysis, thermogravimetric analysis, and X-ray photoelectron spectroscopy.

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Section: Introductionmentioning

confidence: 99%

Vanadia supported on nickel manganese oxide nanocatalysts for the catalytic oxidation of aromatic alcohols

et al. 2015

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“…6 shows that the forsterite phase remained in the natural olivine. For the Ni/olivine catalyst, the NiO species disappeared; meanwhile, strong peaks of Ni metal emerged at 44.5 • , 51.9 • , and 76.4 • , suggesting that the surface NiO species were easily reduced, as suggested by (Huang et al, 2012), in which the reduction peak from NiO to Ni • emerged at 453 • C. For the MNS-C and MNS-H, no obvious peaks of Ni metal were found, suggesting that either the Ni 2+ species in Mg 2−x Ni x SiO 4 species was difficult to reduce, or the reduced Ni • species was highly dispersed.…”

Section: Characterisations Of Olivine-type Catalystsmentioning

confidence: 87%

“…7 shows that, for Ni/olivine, strong reduction peaks were found at 449 • C, suggesting that NiO species can be reduced below 800 • C and is consistent with the strong peaks of Ni metal in XRD. For the MNS-C catalyst, there are only weak reduction peaks at approximately 384 • C and 883 • C, which can be attributed to the partial reduction of the nickel species over the surface and in the bulk phase, respecBrought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 7/28/15 7:26 PM tively (Huang et al, 2012(Huang et al, , 2011. According to the analysis of H 2 uptake, approximately 21.5 % of Ni 2+ species was reduced to Ni • .…”

Section: Characterisations Of Olivine-type Catalystsmentioning

confidence: 99%

Ni-based olivine-type catalysts and their application in hydrogen production via auto-thermal reforming of acetic acid

et al. 2015

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Olivine is abundant in the Earth's upper mantle; it has applications in catalysts to enhance their stability in structures. The olivine-type catalysts were prepared by co-precipitation and hydrothermal synthesis and tested in the auto-thermal reforming (ATR) of acetic acid (AC), a model compound from bio-oil, for hydrogen production. In the meantime, the natural olivine impregnated with Ni was also tested. Characterisations of XRD, nitrogen physisorption, temperature-programmed reduction, and SEM-EDX were used to find the structure-reactivity relationship. The results indicate that the natural olivine produced a low H2 yield close to 0.17 mole of H2 per 1 mole of AC, while the olivine impregnated with Ni produced a H2 yield of from 2.19 mole to 2.73 mole of H2 per mole of AC. The olivine catalyst prepared by hydrothermal synthesis performed better in both activity and stability: the H2 yield achieved 3.06 mole of H2 per mole of AC and remained stable, which could be attributed to the higher surface area and stability with Ni inserted in the skeleton of olivine.

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“…Increase in Mn content intensified the peaks related to the reduction of manganese oxide species. 3,14,16,27,28,32,33…”

Section: Physicochemical Propertiesmentioning

confidence: 99%

“…In addition, the coke formation was studied over the promoted catalysts to investigate the inhibiting effect of Mn promoter on carbon formation. 10,24,27 2. Experimental…”

Section: Introductionmentioning

confidence: 99%

Preparation and evaluation of mesoporous nickel and manganese bimetallic nanocatalysts in methane dry reforming process for syngas production

2018

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In this paper, Ni-Mn catalysts supported on mesoporous nanocrystalline γ-Al 2 O 3 were prepared and employed in carbon dioxide reforming of methane for the production of synthesis gas. The physicochemical properties of the catalysts were determined by XRD, BET, TPO and SEM techniques. The obtained results revealed that the Mn-promoted catalysts exhibited higher activity and stability and lower degree of carbon formation compared to unpromoted nickel catalyst. The catalytic results showed that the 10 (wt%) Ni-3 (wt%) Mn/Al 2 O 3 catalyst possessed the highest catalytic activity. The XRD results confirmed that the addition of Mn improves the dispersion of the active metal species on the catalyst or incorporates into the support due to a decrease in the crystallite size of Ni and consequently causes an increase in Ni dispersion. The 10 (wt%) Ni-3 (wt%) Mn/Al 2 O 3 catalyst was stable during 20 hour on stream without any decrease in methane conversion.

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Manganese-promoted nickel/alumina catalysts for hydrogen production via auto-thermal reforming of ethanol

Cited by 20 publications

References 13 publications

Vanadia supported on nickel manganese oxide nanocatalysts for the catalytic oxidation of aromatic alcohols

Vanadia supported on nickel manganese oxide nanocatalysts for the catalytic oxidation of aromatic alcohols

Ni-based olivine-type catalysts and their application in hydrogen production via auto-thermal reforming of acetic acid

Preparation and evaluation of mesoporous nickel and manganese bimetallic nanocatalysts in methane dry reforming process for syngas production

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