Recent advances in the catalytic deoxygenation of plant oils and prototypical fatty acid models compounds: Catalysis, process, and kinetics

Cheah, Kin Wai; Loy, Adrian Chun Minh; How, Bing Shen; Skoulou, Vasiliki; Taylor, Martin J.

doi:10.1016/j.mcat.2021.111469

Cited by 24 publications

(11 citation statements)

References 200 publications

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“…In addition, as the temperature increased from 300°C to 360°C, the concentration of C 15 + C 17 increased from 41.9 wt% to 47.6 wt%, which meant DCO and DCO 2 were the main reactions. Because DCO and DCO 2 are endothermic reaction, which were favorable above 300°C 46 . Therefore, DCO and DCO 2 reactions will reduce the H 2 consumption compared with the HDO reaction, which is a big advantage.…”

Section: Resultsmentioning

confidence: 99%

The production of hydro‐processed renewable diesel over the nonsulfide catalyst

et al. 2021

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Summary In this study, the main process involves the conversion of palm oil into hydro‐processed renewable diesel (HRD) over a nonsulfide catalyst. First, catalysts with different supports (γ‐Al2O3 and SAPO‐11) and metals (Ni and Mo) are compared in experiments. The results showed that 8Ni‐8Mo/γAl2O3 is the most suitable catalyst for HRD production, with the highest conversion and selectivity of 99.5% and 98.9%, respectively. The chemical kinetic reaction, conversion, and selectivity of the catalyst were analyzed through different temperatures, pressures, and H2‐to‐oil ratios to determine the optimal conditions. The regenerated catalyst through calcining showed well recovered structure and textural properties by using X‐ray diffraction, thermal gravimetric analysis, Fourier transfer infrared spectroscopy, and N2 adsorption/desorption measurements. Last but not least, the fuel components and properties of HRD were determined, include 46.8 MJ/kg of heating value, distillation temperature of 306°C, 5°C of cloud point, 81.4 of cetane number, 204°C of auto‐ignition temperature, 62°C of flash point, and 61.8 mm of smoke point, which meets the diesel specifications.

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Section: Resultsmentioning

confidence: 99%

The production of hydro‐processed renewable diesel over the nonsulfide catalyst

et al. 2021

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“…Under rich hydrogen environment, hydrodeoxygenation takes place predominantly. 25,99,100 Low hydrogen availability encouraged decarbonylation route, however the presence of hydrogen unnecessarily required in the decarboxylation.…”

Section: Influence Of Pressurementioning

confidence: 99%

“…Mostly, the reaction is conducted at 200–400 °C and 1–10 MPa over supported metal catalysts. 25 Fatty acids and fatty acid methyl esters (FAME or biodiesel) are also employed as the feedstock noting that natural oil deoxygenation comprises of complicated steps. Fatty acid methyl ester is preferable since the transesterification of natural oil to produce FAME is more feasible than oil splitting to generate fatty acid.…”

Section: Introductionmentioning

confidence: 99%

Selectivity of reaction pathways for green diesel production towards biojet fuel applications

et al. 2023

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“…Among them, the hydrodeoxygenation (HDO) of lipids to fatty alcohols is one of the most significant transformations because fatty alcohols have wide applications in lubricants, food additives, surfactants, polymers, cosmetics, and pharmaceuticals. − In this process, transition-metal catalysts are necessary to activate substrates and hydrogen sources. − In general, noble-metal catalysts exhibit a catalytic performance , superior to that of non-noble-metal ones for this reaction. , Considering the issues of economic costs and environmental protection, non-noble-metal-based heterogeneous catalysts may be a better choice, even if their catalytic performance is limited.…”

Section: Introductionmentioning

confidence: 99%

Carbon-Coated NiMoO_x Bimetallic Catalyst for Selective Hydrodeoxygenation of Lipids to Fatty Alcohols

Chen,

Wu,

et al. 2024

ACS Sustainable Chem. Eng.

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The hydrodeoxygenation (HDO) of lipids to fatty alcohols is one of the most significant transformations in lipid chemistry because fatty alcohols have wide applications. Herein, a new carbon-coated NiMoO x catalyst (NiMoO x @C-2) has been fabricated through a novel detonation method. It exhibits catalytic activity and selectivity for the HDO of lipids to alcohols superior to those of most of the reported non-noble-metal catalysts, by which a 99% yield of stearic alcohol can be afforded at 200 °C under 2 MPa of H 2 for 5 h. The carbon coating enables NiMoO x @C-2 to have strong chemical adsorption of the carbonyl group, which includes in the ratedetermining step at low temperatures, but this adsorption will weaken at high temperatures, which may be the main reason why this catalyst exhibits excellent activity and selectivity for this HDO reaction. Different lipids, including stearic acid, palmitic acid, methyl stearate, and glyceryl tristearate, can be applied in this protocol to produce moderate-to-excellent yields of the corresponding alcohols (68−99%). In addition, this material also displays excellent stability and can be reused at least seven times.

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Recent advances in the catalytic deoxygenation of plant oils and prototypical fatty acid models compounds: Catalysis, process, and kinetics

Cited by 24 publications

References 200 publications

The production of hydro‐processed renewable diesel over the nonsulfide catalyst

The production of hydro‐processed renewable diesel over the nonsulfide catalyst

Selectivity of reaction pathways for green diesel production towards biojet fuel applications

Carbon-Coated NiMoO_x Bimetallic Catalyst for Selective Hydrodeoxygenation of Lipids to Fatty Alcohols

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Recent advances in the catalytic deoxygenation of plant oils and prototypical fatty acid models compounds: Catalysis, process, and kinetics

Cited by 24 publications

References 200 publications

The production of hydro‐processed renewable diesel over the nonsulfide catalyst

The production of hydro‐processed renewable diesel over the nonsulfide catalyst

Selectivity of reaction pathways for green diesel production towards biojet fuel applications

Carbon-Coated NiMoOx Bimetallic Catalyst for Selective Hydrodeoxygenation of Lipids to Fatty Alcohols

Contact Info

Product

Resources

About

Carbon-Coated NiMoO_x Bimetallic Catalyst for Selective Hydrodeoxygenation of Lipids to Fatty Alcohols