Continuous selective deoxygenation of palm oil for renewable diesel production over Ni catalysts supported on Al2O3and La2O3–Al2O3

Papageridis, Kyriakos N.; Charisiou, Nikolaos D.; Douvartzides, S.; Sebastián, Víctor; Hinder, Steven J.; Baker, Mark; AlKhoori, Ayesha A.; AlKhoori, Sara; Polychronopoulou, Kyriaki; Goula, Maria A.

doi:10.1039/d0ra08541c

Cited by 27 publications

(17 citation statements)

References 88 publications

(134 reference statements)

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“…The authors related this fast deactivation to the adsorption of the unsaturated triglycerides on the surface of the catalyst (coke formation) or due to the sintering of the Ni species on the γ-alumina surface. Similar conclusions were also drawn by Papageridis et al [36].…”

Section: Resultssupporting

confidence: 91%

Theoretical Investigation of the Deactivation of Ni Supported Catalysts for the Catalytic Deoxygenation of Palm Oil for Green Diesel Production

et al. 2021

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For the first time, a fully comprehensive heterogeneous computational fluid dynamic (CFD) model has been developed to predict the selective catalytic deoxygenation of palm oil to produce green diesel over an Ni/ZrO2 catalyst. The modelling results were compared to experimental data, and a very good validation was obtained. It was found that for the Ni/ZrO2 catalyst, the paraffin conversion increased with temperature, reaching a maximum value (>95%) at 300 °C. However, temperatures greater than 300 °C resulted in a loss of conversion due to the fact of catalyst deactivation. In addition, at longer times, the model predicted that the catalyst activity would decline faster at temperatures higher than 250 °C. The CFD model was able to predict this deactivation by relating the catalytic activity with the reaction temperature.

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Section: Resultssupporting

confidence: 91%

Theoretical Investigation of the Deactivation of Ni Supported Catalysts for the Catalytic Deoxygenation of Palm Oil for Green Diesel Production

et al. 2021

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“…Nevertheless, the bentonite-ZrN catalyst revealed an only 3.73% decrease in the catalyst activity towards conversion at four consecutive cycles relative to the fresh catalyst, whereas only 2.34% decreased in the catalyst activity by bentonite-ZrP. Papageridis et al 88 reported that the nitride-based catalyst had more stability than the sulfide catalyst towards the conversion of guaiacol through the hydrodeoxygenation reaction after 4 h on stream during continuous operation, whereas de Souza et al 35 showed that the phosphide-based catalyst had an insignificant deactivation towards phenol conversion through the hydrodeoxygenation reaction during 20 h on stream. According to the reusability study (Fig.…”

Section: Resultsmentioning

confidence: 99%

Hydrocracking of crude palm oil to a biofuel using zirconium nitride and zirconium phosphide-modified bentonite

et al. 2022

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“…2CO → C + CO 2 (10) Carbon deposits are also produced from methane decomposition (Equation ( 11)), carbon monoxide and dioxide decomposition (Equations ( 12) and ( 13)), and ethene polymerization (Equation ( 14)) [12].…”

Section: Mechanism Of Bio-oil Steam Reformingmentioning

confidence: 99%

“…Lignocellulosic biomass, such as agricultural residues and dedicated energy crops, has a vast unused potential for continuous energy supply at a low price and with neutral carbon dioxide (CO 2 ) environmental impact [8][9][10]. The utilization of lignocelluloses can open a renewable carbon-neutral roadmap [11,12] for the production of heat, electrical power and biofuels.…”

Section: Introductionmentioning

confidence: 99%

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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Continuous selective deoxygenation of palm oil for renewable diesel production over Ni catalysts supported on Al₂O₃and La₂O₃–Al₂O₃

Abstract: Highly selective and stable Ni supported on La2O3–Al2O3 catalyst on the deCO/deCO2 reaction paths for the production of renewable diesel.

Cited by 27 publications

References 88 publications

Theoretical Investigation of the Deactivation of Ni Supported Catalysts for the Catalytic Deoxygenation of Palm Oil for Green Diesel Production

Theoretical Investigation of the Deactivation of Ni Supported Catalysts for the Catalytic Deoxygenation of Palm Oil for Green Diesel Production

Hydrocracking of crude palm oil to a biofuel using zirconium nitride and zirconium phosphide-modified bentonite

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

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