Production of hydrogen for fuel cells by reformation of biomass-derived ethanol

Fatsikostas, Athanasios N.; Kondarides, Dimitris Ι.; Verykios, Xenophon E.

doi:10.1016/s0920-5861(02)00057-3

Cited by 436 publications

(229 citation statements)

References 17 publications

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“…The application of basic metal oxides [42,43] as supports or as promoters [44,45] into Al2O3 have been researched to enhance the catalytic performance and minimize the coke deposition. For example, Yang et al [46] investigated the effect of catalyst supports on ethanol steam reforming (ESR) using Ni-based catalysts and reported that Ni/ZnO exhibited the highest hydrogen selectivity followed by Ni/MgO and Ni/ -Al2O3.…”

Section: Introductionmentioning

confidence: 99%

Promoting hydrogen production and minimizing catalyst deactivation from the pyrolysis-catalytic steam reforming of biomass on nanosized NiZnAlOx catalysts

Dong

Ling

et al. 2017

Fuel

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Hydrogen production from the thermochemical conversion of biomass was carried out with nano-sized NiZnAlOx catalysts using a two-stage fixed bed reactor system. The gases derived from the pyrolysis of wood sawdust in the first stage were catalytically steam reformed in the second stage. The NiZnAlOx catalysts were synthesized by a co-precipitation method with different Ni molar fractions (5, 10, 15, 25 and 35%) and a constant Zn:Al molar ratio of 1:4. The catalysts were characterized by a wide range of techniques, including N2 adsorption, SEM, XRD, TEM and temperature-programmed oxidation (TPO) and reduction (TPR). Fine metal particles of size around 10-11 nm were obtained and the catalysts had high stability characteristics, which improved the dispersion of active centers during the reaction and promoted the performance of the catalysts. The yield of gas was increased from 49.3 to 74.8 wt.%, and the volumetric concentration of hydrogen was increased from 34.7 to 48.1 vol.%, when the amount of Ni loading was increased from 5 to 35%. Meanwhile, the CH4 fraction decreased from 10.2 to 0.2 vol.% and the C2-C4 fraction was reduced from 2.4 vol.% to 0.0 vol.%. During the reaction, the crystal size of all catalysts was successfully maintained at around 10-11 nm with lowered catalyst coke formation, (particularly for the 35NiZn4Al catalyst where negligible coke was found) and additionally no obvious catalyst sintering was detected. The efficient production of hydrogen from the thermochemical conversion of renewable biomass indicates that it is a promising sustainable route to generate hydrogen from biomass using the NiZnAl metal oxide catalyst prepared in this work via a two-stage reaction system.

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Section: Introductionmentioning

confidence: 99%

Promoting hydrogen production and minimizing catalyst deactivation from the pyrolysis-catalytic steam reforming of biomass on nanosized NiZnAlOx catalysts

Dong

Ling

et al. 2017

Fuel

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“…However, there are environmental concerns associated with this technology: emission of CO2 as a greenhouse gas, resource depletion, destruction of nature due to drilling, etc. Recently, biomass ethanol has attracted significant attention as an alternative resource for hydrogen production 1) 3) . It is a renewable and environmentallyfriendly fuel because it can be produced by fermenting sugars, starches, and celluloses in plants and the CO2 released during its combustion is reused for the growth of the plants.…”

Section: Introductionmentioning

confidence: 99%

Effects of Metal Oxide Support and Non-noble Metal Active Species on Catalytic Steam Reforming of Ethanol for Hydrogen Production

Saeki

Ohkita

Kakuta

et al. 2015

J. Jpn. Petrol. Inst.

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Dependence of hydrogen production via the catalytic steam reforming of ethanol on the metal oxide support and first row transition metal catalyst was investigated. Ni supported on CeO2 was more easily reduced and began to produce hydrogen at a lower temperature than Ni supported on ZrO2, SiO2, Al2O3, and MgO. Ni/CeO2 also maintained a high activity at a constant reaction temperature of 673 K and inhibited carbon deposition. Therefore, CeO2 was adopted as the catalytic support. Compared with Ni/CeO2, Fe/CeO2 and Mn/CeO2 were less active. Contrarily, Co/CeO2 was slightly less active at 673 K, but exhibited a comparable hydrogen yield at 873 K. The Cu/CeO2 system was reduced more readily and produced hydrogen at a lower temperature, but its activity gradually deteriorated by carbon deposition. Thus we concluded that Ni/CeO2 exhibited the best combination of properties with the highest hydrogen yield at 673 K and a long stability.

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“…In order to achieve the comparable catalytic performance with noble metals, the formulation modifications of non-noble metal catalyst systems are worth studying for future commercialization. After summarizing the papers dedicated to investigation of various supports, ZnO and La 2 O 3 seem more promising than MgO, Y 2 O 3 , and Al 2 O 3 in terms of activity and stability [48,49]. The basicity of sample surface has been evidenced crucial to improve its stability by adding La 2 O 3 into the Al 2 O 3 support aiming to neutralize the acidic sites present on the Al 2 O 3 surface [50].…”

Section: Catalyst Overviewmentioning

confidence: 99%

Catalytic Hydrogen Production from Bioethanol

Song

2017

Hydrogen Production Technologies

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Production of hydrogen for fuel cells by reformation of biomass-derived ethanol

Cited by 436 publications

References 17 publications

Promoting hydrogen production and minimizing catalyst deactivation from the pyrolysis-catalytic steam reforming of biomass on nanosized NiZnAlOx catalysts

Promoting hydrogen production and minimizing catalyst deactivation from the pyrolysis-catalytic steam reforming of biomass on nanosized NiZnAlOx catalysts

Effects of Metal Oxide Support and Non-noble Metal Active Species on Catalytic Steam Reforming of Ethanol for Hydrogen Production

Catalytic Hydrogen Production from Bioethanol

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