Effects of gasification gas components on tar and ammonia decomposition over hot gas cleanup catalysts

Simell, Pekka

doi:10.1016/s0016-2361(97)00109-9

Cited by 186 publications

(117 citation statements)

References 22 publications

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“…A set of decomposition reactions, have been proposed by Simell et al [13], using toluene as a tar model compound; and include steam reforming, steam dealkylation, hydrocracking, hydrodealkylation, dry reforming, carbon formation, and an additional cracking reaction was added by Lind et al [14].…”

Section: Introductionmentioning

confidence: 99%

Characterization and evaluation of Ni/SiO2 catalysts for hydrogen production and tar reduction from catalytic steam pyrolysis-reforming of refuse derived fuel

Blanco

Onwudili

et al. 2013

Applied Catalysis B: Environmental

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A series of Ni/SiO 2 catalysts have been prepared and investigated for their suitability for hydrogen production and tar reduction in a two-stage pyrolysis-reforming system, using refuse derived fuel (RDF) as the raw material. Experiments were conducted at a pyrolysis temperature of 600 ºC, and a reforming temperature of 800 ºC. The product gases were analysed by gas chromatography (GC) and the condensed fraction was collected and quantified using gas chromatography-mass spectrometry (GC-MS). The effects of the catalyst preparation method, nickel content and the addition of metal promoters (Ce, Mg, Al), were investigated. Catalysts were characterised using BET surface area analysis, temperature programmed oxidation (TPO), and scanning electron microscopy (SEM). The TPO and SEM analysis of the reacted catalysts showed that amorphous type carbons tended to be deposited over the Ni/SiO 2 catalysts prepared by impregnation, while filamentous type carbons were favoured with the sol-gel prepared catalysts. The influence of catalyst promoters (Ce, Mg, Al) added to the Ni/SiO 2 catalyst prepared by the sol-gel method was found not to be significant, as the H 2 production was not increased and the tar formation was not reduced with the metaladded catalyst. The highest H 2 concentration of 57.9 vol.% and lower tar amount produced of 0.24 mg tar /g RDF ; were obtained using the 20 wt.% Ni/SiO 2 catalyst prepared by sol-gel. On the other hand a low catalytic activity for H 2 production and higher tar produced were found for the impregnated series of catalysts, which might be due to the smaller surface area, pore size and due to the formation of amorphous carbons on the catalyst surface. Alkenes and alcohol functional groups were mainly found in the analysed tar samples, with major concentrations of styrene, phenol, indene, cresols, naphthalene, fluorene, and phenanthrene.

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Section: Introductionmentioning

confidence: 99%

Characterization and evaluation of Ni/SiO2 catalysts for hydrogen production and tar reduction from catalytic steam pyrolysis-reforming of refuse derived fuel

Blanco

Onwudili

et al. 2013

Applied Catalysis B: Environmental

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“…There are two possible explanations for the observed decrease in activity. The first is that CO inhibits reaction by adsorption onto catalyst active sites 11 . The second is that dry reforming is a combination of RWGS and steam reforming 12 and the high concentrations of CO and H 2 O in the feed drive the production of CO 2 and consumption of H 2 O via WGS.…”

Section: Effect Of H 2 Co and Co 2 Co-feedsmentioning

confidence: 99%

Integrated Biomass Gasification with Catalytic Partial Oxidation for Selective Tar Conversion

Zhang¹,

Wei²,

Jeff³

et al. 2011

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“…Therefore, complete decomposition of tar into a major fraction of the gaseous product that integrated with the reactor systems is most essentials research subject in order to enhance the efficiency and cut the operation cost of the pyrolysis process. Several methods have been proposed for removing tar component to increase the gasification process such as physical methods and catalytic reforming [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Tar decomposition over porous low-grade iron ore

Cahyono

Hidayat

Akiyama

2018

AIP Conference Proceedings

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Effects of gasification gas components on tar and ammonia decomposition over hot gas cleanup catalysts

Cited by 186 publications

References 22 publications

Characterization and evaluation of Ni/SiO2 catalysts for hydrogen production and tar reduction from catalytic steam pyrolysis-reforming of refuse derived fuel

Characterization and evaluation of Ni/SiO2 catalysts for hydrogen production and tar reduction from catalytic steam pyrolysis-reforming of refuse derived fuel

Integrated Biomass Gasification with Catalytic Partial Oxidation for Selective Tar Conversion

Tar decomposition over porous low-grade iron ore

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