Stability of different Ni supported catalysts in the in-line steam reforming of biomass fast pyrolysis volatiles

Santamaría, Laura; López, Gartzen; Arregi, Aitor; Amutio, Maider; Artetxe, Maite; Bilbao, Javier; Olazar, Martı́n

doi:10.1016/j.apcatb.2018.09.081

Cited by 103 publications

(45 citation statements)

References 85 publications

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“…However, for the reduced Ni/SiO 2 sample, the characteristic peaks, which were located at 2Theta = 44.51 • , 51.85 • , and 76.37 • , corresponding to (111), (200), and (220) planes of Ni 0 phase, became obvious. This demonstrated that nickel silicate can be reduced into active Ni 0 species at 700 • C [47,48]. It could be observed that Ni 0 species exhibited a broader and weaker characteristic diffraction peak, which suggested that Ni 0 was highly dispersed on the SiO 2 support.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 91%

Stabilization of Fast Pyrolysis Liquids from Biomass by Mild Catalytic Hydrotreatment: Model Compound Study

et al. 2020

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Repolymerization is a huge problem in the storage and processing of biomass pyrolysis liquid (PL). Herein, to solve the problem of repolymerization, mild catalytic hydrotreatment of PL was conducted to convert unstable PL model compounds (hydroxyacetone, furfural, and phenol) into stable alcohols. An Ni/SiO2 catalyst was synthesized by the deposition-precipitation method and used in a mild hydrotreatment process. The mild hydrotreatment of the single model compound was studied to determine the reaction pathways, which provided guidance for improving the selectivity of stable intermediate alcohols through the control of reaction conditions. More importantly, the mild hydrotreatment of mixed model compounds was evaluated to simulate the PL more factually. In addition, the effect of the interaction between hydroxyacetone, furfural, and phenol during the catalytic hydrotreatment was also explored. There was a strange phenomenon observed in that phenol was not converted in the initial stage of the hydrotreatment of mixed model compounds. Thermogravimetric analysis (TGA), Ultraviolet-Raman (UV-Raman), and Brunauer−Emmett−Teller (BET) characterization of catalysts used in the hydrotreatment of single and mixed model compounds demonstrated that this phenomenon did not mainly arise from the irreversible deactivation of catalysts caused by carbon deposition, but the competitive adsorption among hydroxyacetone, furfural, and phenol during the mild hydrotreatment of mixed model compounds.

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Section: X-ray Diffraction (Xrd)mentioning

confidence: 91%

Stabilization of Fast Pyrolysis Liquids from Biomass by Mild Catalytic Hydrotreatment: Model Compound Study

et al. 2020

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“…The intermediates containing the functionalities like -C=C=C-might be the precursors for carbon formation. 25 In addition, a stretching signal corresponding to -OH functional groups appeared at 3200 cm -1 in the FTIR spectra 28…”

Section: Preparation Of C-ni/al 2 O 3 Compositementioning

confidence: 99%

Coked Ni/Al₂O₃ from the catalytic reforming of volatiles from co-pyrolysis of lignin and polyethylene: preparation, identification and application as a potential adsorbent

Zhao

Wang

et al. 2021

Catal. Sci. Technol.

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“…The stability of nickel catalysts, which are one of the most commonly used in the biomass pyrolysis process, strictly depends on the type of the used support. Santamaria et al [31] evaluated the catalytic performance of Ni introduced on the surface of Al 2 O 3 , SiO 2 , MgO, TiO 2 , and ZrO 2 by wet impregnation method in in-line steam reforming of vapors from the fast pyrolysis of pine. The obtained results demonstrated promising activity of Ni/Al 2 O 3 , Ni/MgO, and Ni/ZrO 2 .…”

Section: Formation Of Coke Depositmentioning

confidence: 99%

Catalyst Stability—Bottleneck of Efficient Catalytic Pyrolysis

Grams

Ruppert

2021

Catalysts

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The pyrolysis of lignocellulosic biomass is one of the most promising methods of alternative fuels production. However, due to the low selectivity of this process, the quality of the obtained bio-oil is usually not satisfactory and does not allow for its direct use as an engine fuel. Therefore, there is a need to apply catalysts able to upgrade the composition of the mixture of pyrolysis products. Unfortunately, despite the increase in the efficiency of the thermal decomposition of biomass, the catalysts undergo relatively fast deactivation and their stability can be considered a bottleneck of efficient pyrolysis of lignocellulosic feedstock. Therefore, solving the problem of catalyst stability is extremely important. Taking that into account, we presented, in this review, the most important reasons for catalyst deactivation, including coke formation, sintering, hydrothermal instability, and catalyst poisoning. Moreover, we discussed the progress in the development of methods leading to an increase in the stability of the catalysts of lignocellulosic biomass pyrolysis and strengthening their resistance to deactivation.

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Stability of different Ni supported catalysts in the in-line steam reforming of biomass fast pyrolysis volatiles

Cited by 103 publications

References 85 publications

Stabilization of Fast Pyrolysis Liquids from Biomass by Mild Catalytic Hydrotreatment: Model Compound Study

Stabilization of Fast Pyrolysis Liquids from Biomass by Mild Catalytic Hydrotreatment: Model Compound Study

Coked Ni/Al₂O₃ from the catalytic reforming of volatiles from co-pyrolysis of lignin and polyethylene: preparation, identification and application as a potential adsorbent

Catalyst Stability—Bottleneck of Efficient Catalytic Pyrolysis

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Stability of different Ni supported catalysts in the in-line steam reforming of biomass fast pyrolysis volatiles

Cited by 103 publications

References 85 publications

Stabilization of Fast Pyrolysis Liquids from Biomass by Mild Catalytic Hydrotreatment: Model Compound Study

Stabilization of Fast Pyrolysis Liquids from Biomass by Mild Catalytic Hydrotreatment: Model Compound Study

Coked Ni/Al2O3 from the catalytic reforming of volatiles from co-pyrolysis of lignin and polyethylene: preparation, identification and application as a potential adsorbent

Catalyst Stability—Bottleneck of Efficient Catalytic Pyrolysis

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Coked Ni/Al₂O₃ from the catalytic reforming of volatiles from co-pyrolysis of lignin and polyethylene: preparation, identification and application as a potential adsorbent