Catalytic performance of supported Ni catalysts in partial oxidation and steam reforming of tar derived from the pyrolysis of wood biomass

Miyazawa, Tomohisa; Kimura, Takeo; Nishikawa, Jin; Kado, Shigeru; Kunimori, Kimio; Tomishige, Keiichi

doi:10.1016/j.cattod.2006.02.055

Cited by 208 publications

(100 citation statements)

References 35 publications

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“…Large amounts of coke deposition was reported for Ni/SiO 2 , Ni/ZSM-5 and Ni/mordenite catalysts when cellulose was catalytically gasified at 600 °C [40]. Significant coke deactivation has also been extensively reported for nickel-based catalysts in relation to biomass gasification [21,41,42]. Therefore, in this paper, Ni-Zn-Al and Ni-Ca-Al catalysts prepared by co-precipitation has the potential to significantly reduce the coke deposition for hydrogen production from the process of biomass gasification.…”

Section: Characterization Of Reacted Catalystsmentioning

confidence: 99%

Pyrolysis/gasification of cellulose, hemicellulose and lignin for hydrogen production in the presence of various nickel-based catalysts

Wang

Huang

2013

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165

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Cellulose, hemicellulose and lignin are the main components of biomass. This work presents research into the pyrolysis/gasification of all three main components of biomass, in order to evaluate and compare their hydrogen production and also understand their gasification processes. A fixed bed, two-stage reaction system has been used employing various nickel-based catalysts. Gas concentration (CO, H 2 , CO, CO 2 and CH 4 ) was analysed for the produced non-condensed gases. Oil byproducts were analysed by gas chromatography/mass spectrometry (GC/MS). Various techniques such as X-Ray Diffraction (XRD), scanning electron microscopy (SEM) coupled to an energy dispersive X-ray spectroscopy (EDXS), temperature-programmed oxidation (TPO) were applied to characterize the fresh or reacted catalysts. The experimental results show that the lignin sample generates the highest residue fraction (52.0 wt.%) among the three biomass components. When Ni-Zn-Al (1:1) catalyst was used in the gasification process, gas yield was increased from 62.4 to 68.2 wt.% for cellulose, and from 25.2 to 50.0 wt.% for the pyrolysis/gasification of lignin. Hydrogen production was increased from 7.0 to 18.7 (mmol g -1 sample) when the Ni-Zn-Al (1:1) catalyst was introduced in the pyrolysis/gasification of cellulose. Among the investigated catalysts, Ni-Ca-Al (1:1) was found to be the most effective for hydrogen production from cellulose pyrolysis/gasification.

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Section: Characterization Of Reacted Catalystsmentioning

confidence: 99%

Pyrolysis/gasification of cellulose, hemicellulose and lignin for hydrogen production in the presence of various nickel-based catalysts

Wang

Huang

2013

Fuel

165

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“…For enhanced catalytic performance and thermal stability, various supports (such as, zeolites [4,5,7,28,29], dolomite [1,22,30,31], olivine [21,32], other metal and metal oxides such as La, Fe, CeO2, SiO2, ZrO2, TiO2, MgO, ZnO, Al2O3 [10,[33][34][35][36][37][38][39]) have been applied to change the interactions between support and metal particles which may thereby influence the catalytic properties. Particularly, alumina has been widely investigated as a catalyst support due to high activity and low cost in the reforming process [33][34][35]40]. However, catalysts based on an alumina support suffer severely from coke deposition because of the strong acidity of the alumina support [41].…”

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

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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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“…In this case, Ce in the Ni/CeO2-γAl2O3 catalyst reduced carbon deposition and coking. Ni/CeO2 formed less amount of coke than Ni/Al2O3 in the partial oxidation of tar (POT) 10) . Ni/CeO2 was thought to promote the reaction of carbon with O2 and steam.…”

mentioning

confidence: 99%

Effects of Types of Metal Oxides on Hydrothermal Gasification of Phenol over Novel Metal Oxide–carbon Composite Supported Ni Catalysts Prepared by Sol-gel Method

篤

健太

忠範

et al. 2015

J. Jpn. Petrol. Inst.

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Catalytic performance of supported Ni catalysts in partial oxidation and steam reforming of tar derived from the pyrolysis of wood biomass

Cited by 208 publications

References 35 publications

Pyrolysis/gasification of cellulose, hemicellulose and lignin for hydrogen production in the presence of various nickel-based catalysts

Pyrolysis/gasification of cellulose, hemicellulose and lignin for hydrogen production in the presence of various nickel-based catalysts

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

Effects of Types of Metal Oxides on Hydrothermal Gasification of Phenol over Novel Metal Oxide–carbon Composite Supported Ni Catalysts Prepared by Sol-gel Method

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