Overview on catalytic deoxygenation for biofuel synthesis using metal oxide supported catalysts

Ooi, Xian Yih; Gao, Wei; Ong, Hwai Chyuan; Lee, Hwei Voon; Juan, Joon Ching; Chen, Wei‐Hsin; Lee, Keat Teong

doi:10.1016/j.rser.2019.06.031

Cited by 97 publications

(27 citation statements)

References 181 publications

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“…7,8 Higher oxygen contents cause severe engine problems like carbon deposit and lubricant thickening. 9 Hence, there is a strong need to nd other alternatives that have similar properties to petroleum fuel to replace transesterication technology such as the deoxygenation reaction for green diesel production.…”

Section: Introductionmentioning

confidence: 99%

Development of bimetallic nickel-based catalysts supported on activated carbon for green fuel production

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Development of bimetallic nickel-based catalysts supported on activated carbon for green fuel production

et al. 2020

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“…Several studies exemplified the use of renewable feedstocks for the production of jet biofuels [36][37][38][39][40]. Overall, it was reported that soybean, which is a widely employed crop for the production of oil, bears relatively low oil yield when compared to palm, coconut and jatropha, for example.…”

Section: Catalytic Hydroprocessing Of Esters and Fatty Acids (Hefa)mentioning

confidence: 99%

“…Furthermore, the utilization of microalgae oil [32], lignin [33], waste cooking oil [34] and fish discards [35] and the respective pathways for producing jet biofuels were also reported. Furthermore, the production processes of jet biofuels from triacylglycerols have been extensively studied [36][37][38][39][40]. In this communication, the catalytic mechanisms of the hydroprocessing of esters and fatty acids (hydrogenation, decarboxylation, decarbonylation, cracking and isomerization) are reviewed, along with the employed catalysts.…”

Section: Introductionmentioning

confidence: 99%

Production of Jet Biofuels by Catalytic Hydroprocessing of Esters and Fatty Acids: A Review

et al. 2022

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The transition from fossil to bio-based fuels is a requisite for reducing CO2 emissions in the aviation sector. Jet biofuels are alternative aviation fuels with similar chemical composition and performance of fossil jet fuels. In this context, the Hydroprocessing of Esters and Fatty Acids (HEFA) presents the most consolidated pathway for producing jet biofuels. The process for converting esters and/or fatty acids into hydrocarbons may involve hydrodeoxygenation, hydrocracking and hydroisomerization, depending on the chemical composition of the selected feedstock and the desired fuel properties. Furthermore, the HEFA process is usually performed under high H2 pressures and temperatures, with reactions mediated by a heterogeneous catalyst. In this framework, supported noble metals have been preferably employed in the HEFA process; however, some efforts were reported to utilize non-noble metals, achieving a similar performance of noble metals. Besides the metallic site, the acidic site of the catalyst is crucial for product selectivity. Bifunctional catalysts have been employed for the complete process of jet biofuel production with standardized properties, with a special remark for using zeolites as support. The proper design of heterogeneous catalysts may also reduce the consumption of hydrogen. Finally, the potential of enzymes as catalysts for intermediate products of the HEFA pathway is highlighted.

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“…The main composition of these oils is long‐chain fatty acids and fatty acid esters [4,5] . Recently, the conversion of fatty acids or fatty acid esters into biofuels has been considered as an eﬀective strategy to obtain biofuel and has been intensively studied by many researchers [6–8] . Biodiesel is among the few biomass‐derived fuels that have reached commercial stage [9] .…”

Section: Introductionmentioning

confidence: 99%

Synthetic Fuels from Biomass: Photocatalytic Hydrodecarboxylation of Octanoic Acid by Ni Nanoparticles Deposited on TiO₂

Peng

Albero

et al. 2021

ChemSusChem

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Decarboxylation of low‐value fatty acids from biomass is a simple process to produce synthetic fuels suitable to be blended with gasoline or diesel. The present study reports the photocatalytic decarboxylation of octanoic acid in the presence of H2 by a series of modified TiO2 to form mixtures of n‐heptane and tetradecane as major products in variable proportions, depending on the photocatalyst and the reaction conditions. It was found that the photocatalytic activity increases upon an optimal reductive NaBH4 treatment, presumably by generation of surface oxygen vacancies and by the deposition of Ni nanoparticles in the appropriate loading. Under the optimized conditions, an almost complete octanoic acid conversion and a combined selectivity to n‐heptane and tetradecane over 80 % were reached at 10 h of UV/Vis light irradiation with a 300 W Xe lamp. No changes in the photocatalytic performance were observed for six consecutive runs. The present results illustrate the possibility that photocatalytic decarboxylation offers for the transformation of biomass into synthetic fuels under mild conditions.

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Overview on catalytic deoxygenation for biofuel synthesis using metal oxide supported catalysts

Cited by 97 publications

References 181 publications

Development of bimetallic nickel-based catalysts supported on activated carbon for green fuel production

Development of bimetallic nickel-based catalysts supported on activated carbon for green fuel production

Production of Jet Biofuels by Catalytic Hydroprocessing of Esters and Fatty Acids: A Review

Synthetic Fuels from Biomass: Photocatalytic Hydrodecarboxylation of Octanoic Acid by Ni Nanoparticles Deposited on TiO₂

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Overview on catalytic deoxygenation for biofuel synthesis using metal oxide supported catalysts

Cited by 97 publications

References 181 publications

Development of bimetallic nickel-based catalysts supported on activated carbon for green fuel production

Development of bimetallic nickel-based catalysts supported on activated carbon for green fuel production

Production of Jet Biofuels by Catalytic Hydroprocessing of Esters and Fatty Acids: A Review

Synthetic Fuels from Biomass: Photocatalytic Hydrodecarboxylation of Octanoic Acid by Ni Nanoparticles Deposited on TiO2

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Synthetic Fuels from Biomass: Photocatalytic Hydrodecarboxylation of Octanoic Acid by Ni Nanoparticles Deposited on TiO₂