Feasibility of online pre-reforming step with dolomite for improving Ni spinel catalyst stability in the steam reforming of raw bio-oil

García-Gómez, Naiara; Valle, Beatríz; Valecillos, José; Remiro, Aingeru; Bilbao, Javier; Gayubo, Ana G.

doi:10.1016/j.fuproc.2021.106769

Cited by 22 publications

(17 citation statements)

References 66 publications

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“…For this reason, nickel is regarded as highly efficient for the SR of raw bio-oil, its aqueous fraction and oxygenate model compounds. This is demonstrated by numerous studies which have reported very high values for bio-oil conversion and H 2 selectivity [77,79,100]. Al 2 O 3 is frequently used to support Ni catalysts due to its high surface area and high thermal and chemical stability [76,77,79].…”

Section: Ni-based Catalystsmentioning

confidence: 98%

“…A major advantage of the production of hydrogen through catalytic SR is that bio-oil dehydration, a rather expensive process, can be avoided [100]. Steam reforming (SR) is an endothermic equilibrium reaction between an organic compound and steam in the presence of a catalyst.…”

Section: Mechanism Of Bio-oil Steam Reformingmentioning

confidence: 99%

“…The nature of the active metal not only affects the quantity of carbon deposition, but also its quality and location [56], and a large number of works show that the latter factors play a more significant role in catalyst deactivation than the amount [100,105]. Vagia et al [64], studied the SR of acetic acid, using Ni-and Rh-based catalysts supported on CeO 2 -ZrO 2 , and showed that the almost negligible carbonaceous deposition on Rh catalysts can be attributed to the minimal affinity of Rh to coking and to the fast supply of oxygen to the metal interface.…”

Section: Coke Formationmentioning

confidence: 99%

“…The sorbent stability can be increased and the reforming operation becomes simpler by combining the sorbent and the catalyst in one catalytic system [57,183]. In addition to synthetic sorbents, natural sorbents such as dolomite (mainly MgO and CaO) and hydrotalcite have also been used [98,100]. The sorbent can also be regenerated and the high-purity CO 2 which is released in the regenerator can be reused.…”

Section: Sorption Enhanced Steam Reforming (Sesr)mentioning

confidence: 99%

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Recent Progress in the Steam Reforming of Bio-Oil for Hydrogen Production: A Review of Operating Parameters, Catalytic Systems and Technological Innovations

et al. 2021

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The present review focuses on the production of renewable hydrogen through the catalytic steam reforming of bio-oil, the liquid product of the fast pyrolysis of biomass. Although in theory the process is capable of producing high yields of hydrogen, in practice, certain technological issues require radical improvements before its commercialization. Herein, we illustrate the fundamental knowledge behind the technology of the steam reforming of bio-oil and critically discuss the major factors influencing the reforming process such as the feedstock composition, the reactor design, the reaction temperature and pressure, the steam to carbon ratio and the hour space velocity. We also emphasize the latest research for the best suited reforming catalysts among the specific groups of noble metal, transition metal, bimetallic and perovskite type catalysts. The effect of the catalyst preparation method and the technological obstacle of catalytic deactivation due to coke deposition, metal sintering, metal oxidation and sulfur poisoning are addressed. Finally, various novel modified steam reforming techniques which are under development are discussed, such as the in-line two-stage pyrolysis and steam reforming, the sorption enhanced steam reforming (SESR) and the chemical looping steam reforming (CLSR). Moreover, we argue that while the majority of research studies examine hydrogen generation using different model compounds, much work must be done to optimally treat the raw or aqueous bio-oil mixtures for efficient practical use. Moreover, further research is also required on the reaction mechanisms and kinetics of the process, as these have not yet been fully understood.

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Section: Ni-based Catalystsmentioning

confidence: 98%

Section: Mechanism Of Bio-oil Steam Reformingmentioning

confidence: 99%

Section: Coke Formationmentioning

confidence: 99%

Section: Sorption Enhanced Steam Reforming (Sesr)mentioning

confidence: 99%

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Recent Progress in the Steam Reforming of Bio-Oil for Hydrogen Production: A Review of Operating Parameters, Catalytic Systems and Technological Innovations

et al. 2021

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“…Catalysts for steam reforming of bio-oil for hydrogen production mainly include Ni-based catalysts, [14][15][16][17] Co based catalysts, [18][19][20] noble metal catalysts, 21,22 etc. Among them, Ni-based catalyst has the ability to break C-C bond and promote water gas shi reaction, 23 which is an efficient catalyst for biooil steam reforming.…”

Section: Introductionmentioning

confidence: 99%

Nano-silica extracted from rice husk and its application in acetic acid steam reforming

Guo

Zheng

2021

RSC Adv.

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Catalytic Steam Reforming of Toluene as Model Tar Compound of Biomass Gasification over Cu/Ni/Olivine

et al. 2022

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Bimetallic Cu/Ni/olivine catalysts with various Cu/Ni mass ratios were prepared for steam reforming of toluene as model tar compound. The effects of the Cu/Ni ratio, the reaction temperature, and the steam-to-carbon ratio (S/C) on the steam reforming of toluene were investigated in a fixed-bed reactor. Among the catalysts, olivine coated with 3 wt % CuO and 12 wt % NiO (Cu3/Ni12/O) achieved higher catalytic performance and structural stability due to the synergistic effect of Ni and Cu. The appropriate S/C and a higher temperature were beneficial to steam reforming of toluene. The catalytic performance was not only affected by the amount but also by the types of carbon deposition. Compared with the amorphous carbon, the larger amount of graphitic carbon formed on the catalyst surface was more likely to lead to a decreased catalytic performance.

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Feasibility of online pre-reforming step with dolomite for improving Ni spinel catalyst stability in the steam reforming of raw bio-oil

Cited by 22 publications

References 66 publications

Recent Progress in the Steam Reforming of Bio-Oil for Hydrogen Production: A Review of Operating Parameters, Catalytic Systems and Technological Innovations

Recent Progress in the Steam Reforming of Bio-Oil for Hydrogen Production: A Review of Operating Parameters, Catalytic Systems and Technological Innovations

Nano-silica extracted from rice husk and its application in acetic acid steam reforming

Catalytic Steam Reforming of Toluene as Model Tar Compound of Biomass Gasification over Cu/Ni/Olivine

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