Hydrogen production from catalytic reforming of the aqueous fraction of pyrolysis bio-oil with modified Ni–Al catalysts

Yao, Dingding; Wu, Chunfei; Yang, Haiping; Hu, Qiang; Nahil, Mohamad A.; Chen, Hanping

doi:10.1016/j.ijhydene.2014.07.077

Cited by 83 publications

(25 citation statements)

References 50 publications

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“…Liu et al [29] observed H 2 yields of approximately 20e30% when employing a supported NieMo catalyst at 650 C and S/C ¼ 16. Yao et al [30] who utilized a slightly lower S/C ratio than in the current study (3.54 vs. 3.84), reported a H 2 yield of 17.68% at 700 C. Compared to the results obtained in this study, the H 2 yields in literature were systematically lower at similar reaction temperatures. This is a clear indication that the aqueous pyrolysis oil obtained via one-step fractional condensation could be successfully steam reformed at relatively mild process conditions without significant catalyst deactivation during two hours of time-on-stream.…”

Section: Effect Of Reaction Temperaturecontrasting

confidence: 74%

Steam reforming of pyrolysis oil aqueous fraction obtained by one-step fractional condensation

Paasikallio

Kihlman

Sánchez

et al. 2015

International Journal of Hydrogen Energy

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Section: Effect Of Reaction Temperaturecontrasting

confidence: 74%

Steam reforming of pyrolysis oil aqueous fraction obtained by one-step fractional condensation

Paasikallio

Kihlman

Sánchez

et al. 2015

International Journal of Hydrogen Energy

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“…The reason for the bio-oil yield increase is attributed to differences in thermal conductivity The SEM results in Figure 2a shows the image of the Ni 2 Fe 3 catalyst particle with an uneven surface. A powdered structure usually exhibits better catalytic properties as indicated in the published literature [20]. Figure 2b shows the image of Ni 2 Fe 3 /ZSM-5 catalyst particle and energy-dispersive X-ray spectroscopy (EDS) results.…”

Section: Introductionmentioning

confidence: 62%

Homogeneous and Heterogeneous Catalysis Impact on Pyrolyzed Cellulose to Produce Bio-Oil

Cheng

Cross

2020

Catalysts

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Effectively utilizing catalytic pyrolysis to upgrade bio-oil products prepared from biomass has many potential benefits for the environment. In this paper, cellulose (a major component of plants and a biomass model compound) is pyrolyzed and catalyzed with different catalysts: Ni 2 Fe 3 , ZSM-5, and Ni 2 Fe 3 /ZSM-5. Two different pyrolysis processes are investigated to compare homogeneous and heterogeneous catalysis influence on the products. The results indicate that the Ni 2 Fe 3 cluster catalyst shows the best activity as a homogeneous catalysis. It can also be recycled repeatedly, increases the yield of bio-oil, and improves the quality of the bio-oil by decreasing the sugar concentration. Furthermore, it also catalyzes the formation of a small amount of hydrocarbon compounds. In the case of Ni 2 Fe 3 /ZSM-5 catalyst, it shows a lower yield of bio-oil but also decreases the sugar concentration significantly. Ni 2 Fe 3 , not only can it be used as homogeneous catalysis mixed with cellulose but also shows catalytic activity as a supported catalyst on ZSM-5, with higher catalytic activity than ZSM-5. These results indicate that the Ni 2 Fe 3 catalyst has significant activity for potential use in industry to produce high quality bio-oil from biomass.

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“…To evaluate the influence of operating parameters and type of biomass on the gasification performance, the steam gasification of biomass and catalyst activity and stability regulation by modifying the carrier and adding additives have been investigated by many authors. [4][5][6][7][8][9][10][11][12][13][14] To enhance hydrogen production, many catalysts have been proposed for biomass gasification. [7][8][9][10][11][12][13] It is well known that Ni is an excellent element for the steam reforming reaction of tar cracking into small molecules and methane.…”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6][7][8][9][10][11][12][13][14] To enhance hydrogen production, many catalysts have been proposed for biomass gasification. [7][8][9][10][11][12][13] It is well known that Ni is an excellent element for the steam reforming reaction of tar cracking into small molecules and methane. [14,15] Nickel-based catalysts are commonly used in the gasification process to promote hydrogen production and O─H and C─C cracking reactions, due to their effective catalytic performance and comparatively low cost.…”

Section: Introductionmentioning

confidence: 99%

Effect of Additives on Ni‐Based Catalysts for Hydrogen‐Enriched Production from Steam Reforming of Biomass

Wang

Zhang

et al. 2020

Energy Tech

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The catalytic steam reforming of biomass for hydrogen production is investigated in a fixed‐bed reactor. A suitable additive and precursor is found in various additives (cobalt, strontium, and lanthanum) and nickel salt precursors (nickel nitrate, nickel acetate, nickel chloride, and nickel sulfate). Synthesized samples are characterized by X‐ray diffraction (XRD), NH3 temperature‐programmed desorption (TPD), H2 temperature‐programmed reduction (TPR), and transmission electron microscopy (TEM). Results show that Co and La doping of the Ni/Al2O3 catalyst improves the dispersion of surface‐active particles and reduces the particle size, increasing H2 production. The hydrogen volume fraction of La‐modified catalysts with 10% Ni is 38.96%, which is higher than 30.39% for the unmodified Ni/Al2O3 catalyst. The lowest hydrogen yield of Ni–Sr/Al2O3 catalyst is 19.22%. This low catalytic activity is due to the reaction of Ni–Sr/Al2O3 with SiO2 found in biomass ash, which generates silicate without catalytic effect. The silicate melts and adheres to the catalyst surface at a high temperature, inhibiting the catalysis of nickel active sites. The maximum hydrogen yield obtained with nickel acetate as catalyst precursor is 51.41%, which is due to nickel acetate decomposing and forming more NiO in the amorphous state and improving the performance of catalyst.

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Hydrogen production from catalytic reforming of the aqueous fraction of pyrolysis bio-oil with modified Ni–Al catalysts

Abstract: Abstract:Hydrogen production from renewable resources has received extensive attention recently for a sustainable and renewable future. In this study, hydrogen was produced from catalytic steam reforming of the aqueous fraction of crude bio-oil, which was

Cited by 83 publications

References 50 publications

Steam reforming of pyrolysis oil aqueous fraction obtained by one-step fractional condensation

Steam reforming of pyrolysis oil aqueous fraction obtained by one-step fractional condensation

Homogeneous and Heterogeneous Catalysis Impact on Pyrolyzed Cellulose to Produce Bio-Oil

Effect of Additives on Ni‐Based Catalysts for Hydrogen‐Enriched Production from Steam Reforming of Biomass

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