In situ generation of Ni metal nanoparticles as catalyst for H2-rich syngas production from biomass gasification

Richardson, Yohan; Blin, Joël; Volle, Ghislaine; Motuzas, Julius; Julbe, A.

doi:10.1016/j.apcata.2010.04.047

Cited by 123 publications

(157 citation statements)

References 80 publications

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“…Nickel was found to be the most efficient catalyst for producing both CO and H 2 . This fits the results of Richardson et al [6] who selected nickel to favour syngas formation. Whatever the selected catalyst, methane formation was found to slightly decrease in the presence of a catalyst.…”

Section: Gas Yieldssupporting

confidence: 80%

“…Similar dimensions were reported by Richardson et al [6] for nickel nanoparticles obtained at 500 • C. In the case of copper, a large particle size distribution was observed, ranging from 5 nm to 65 nm. The larger particles were formed by aggregation of small ones (doted circle in Fig.…”

Section: Presence Of Nanoparticles In Charssupporting

confidence: 72%

“…Those results are in good accordance with those obtained by Terakado et al [17] who showed that mixture of nickel and copper nitrate salt with wood leads to the formation of metallic nickel and copper nanoparticles. Richardson et al [6] have shown that Ni(NO 3 ) 2 was first thermally degraded to NiO. Then the char might act as a reducing agent and lead to the reduction of NiO to Ni 0 between 400 • C and 500 • C. It is likely that Cu 0 nanoparticles were formed in the same way.…”

Section: Metal Oxidation Statementioning

confidence: 97%

“…This approach is another promising catalytic strategy. A lot of studies reported that metals remain in chars after pyrolysis and that those metals can be recovered after char combustion [6][7][8]. Thus, metal recycling from chars is easier than their recycling from alumino-silicate structures.…”

Section: Introductionmentioning

confidence: 99%

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Catalytic effect of metal nitrate salts during pyrolysis of impregnated biomass

Eibner

Broust

Blin

et al. 2015

Journal of Analytical and Applied Pyrolysis

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b s t r a c tCatalytic pyrolysis is a promising way to improve bio-oil product quality. In this study, metal salts were directly impregnated in biomass to generate in situ catalysts and investigate their impact on pyrolysis products. Seven metals -Ce, Mn, Fe, Co, Ni, Cu and Zn -were selected and impregnated in eucalyptus using nitrate salts. A fixed-bed reactor, pre-heated at 500• C and inerted with N 2 flow, was used for pyrolysis. Both gas and bio-oil compositions were analysed, paying particular attention to the production of anhydrosugars. The anhydrosugar yields were found to be strongly influenced by the presence of metal salt catalysts. In particular, both Zn and Co salts yielded more anhydrosugars in comparison with catalyst-free sample. Moreover, LAC (1-hydroxy-(1R)-3,6-dioxabicyclo[3.2.1]octan-2-one) was produced in higher amounts than levoglucosan which is commonly produced without any catalyst. Metals were found to remain in all chars and tended to form metal-based nanoparticles (e.g. Cu 0 , Ni 0 , ZnO) able to act as in situ catalysts during the pyrolysis process. It seems that those metal nanoparticles are closely related to LAC production. In parallel to metal cations, nitrates were also suspected to play a significant role during pyrolysis. The suspected impact of anions on levoglucosenone production is discussed. Concerning gas yields, the impregnated nitrate salts were found to strongly affect CO 2 production.

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Section: Gas Yieldssupporting

confidence: 80%

Section: Presence Of Nanoparticles In Charssupporting

confidence: 72%

Section: Metal Oxidation Statementioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Catalytic effect of metal nitrate salts during pyrolysis of impregnated biomass

Eibner

Broust

Blin

et al. 2015

Journal of Analytical and Applied Pyrolysis

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“…Among them, Ni-based catalysts have been reported as one of the most promising catalysts [4,5], since nickel-based catalyst are effective and comparatively cheaper compared with noble metal catalysts.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Steam Gasification of Biomass for a Sustainable Hydrogen Future: Influence of Catalyst Composition

Wang

et al. 2013

Waste Biomass Valor

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Hydrogen is regarded as a clean energy for fuelling the future. Hydrogen will be the energy carrier from other resources such as hydropower, wind, solar and biomass. Producing hydrogen from gasification of biomass wastes, particularly in the presence of steam, represents a promising route to produce this clean and CO 2 -neutral fuel. The steam pyrolysisgasification of biomass (wood sawdust) was carried out with various nickel-based catalysts for hydrogen production in a two-stage fixed bed reaction system. The wood sawdust was pyrolysed in the first reactor and the derived products were gasified in the second reactor in the presence of the catalyst and steam. The synthesised Ni-Ca-Al and Ni-Zn-Al catalysts were prepared by co-precipitation method with different Ni loadings of 20 mol.% and various Zn/Al or Ca/Al ratios, which were characterized with scanning electron microscopy (SEM), transmission electron microscopy (TEM) and temperature-programmed oxidation (TPO). The results showed that the Ni/Zn-Al (1:9) catalyst resulted in higher hydrogen production (23.9 mmol H 2 g -1 biomass) compared with the Ni/Ca-Al (1:9) catalyst (12.7 23.9 mmol H 2 g -1 biomass) and in addition, the increase of Ca or Zn content in the catalyst slightly increased the hydrogen production. The TPO results showed that the catalyst suffered negligible coke deposition from the catalytic steam pyrolysis/gasification of wood sawdust. Additionally, Na 2 CO 3 catalyst preparation agent was also found to produce a catalyst with better performance and lower coke deposition, compared with NH 4 OH catalyst preparation agent, as observed by TPO, SEM and TEM analysis.

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wood refinery

Harms¹

2020

Catalysis From a to Z

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In situ generation of Ni metal nanoparticles as catalyst for H2-rich syngas production from biomass gasification

Cited by 123 publications

References 80 publications

Catalytic effect of metal nitrate salts during pyrolysis of impregnated biomass

Catalytic effect of metal nitrate salts during pyrolysis of impregnated biomass

Catalytic Steam Gasification of Biomass for a Sustainable Hydrogen Future: Influence of Catalyst Composition

wood refinery

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