The conversion of coconut oil into hydrocarbons within the chain length range of jet fuel

Brandão, Ruana D.; Júnior, Antônio M. de Freitas; Oliveira, Silvia C.; Suarez, Paulo A. Z.; Prauchner, Marcos J.

doi:10.1007/s13399-020-01046-9

Cited by 10 publications

(5 citation statements)

References 28 publications

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“…However, these drawbacks can be overcome by blending the synthesized bio-jet fuel with conventional jet fuel or co-processing vegetable oils with kerosene. 43…”

Section: Resultsmentioning

confidence: 99%

“…R. D. Brandão et al also studied the hydroprocessing of coconut oil containing mainly C 12 lauric acid into hydrocarbons within the range of bio-jet fuel (C 5 -C 14 ). 43 The hydroconversion process involved two steps including hydrodeoxygenation (HDO) over a sulded NiMo/Al 2 O 3 catalyst and hydroisomerization (HIS) over a Pt/SAPO-11 catalyst. The NiMo/Al 2 O 3 catalyst was presulded employing the procedure presented in Table 3.…”

Section: Hydroprocessing Of Vegetable Oil Alone Over Suldedmentioning

confidence: 99%

“…46 IN this case, to improve the bio-jet fuel parameters, isomerization of the liquid product can be performed. 4,43 Thus, palm kernel oil is a promising candidate for bio-jet fuel production; however, more studies should be performed using this feedstock to verify its selectivity for C 9 -C 15 hydrocarbons.…”

Section: Hydroprocessing Of Vegetable Oil Alone Over Suldedmentioning

confidence: 99%

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Hydroprocessing of biomass feedstock over sulfided CoMo-, NiMo-, and NiW-supported catalysts for bio-jet fuel component production: a review

Bukhtiyarova,

Vlasova,

Bukhtiyarova

2024

Sustainable Energy Fuels

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“…However, these drawbacks can be overcome by blending the synthesized bio-jet fuel with conventional jet fuel or co-processing vegetable oils with kerosene. 43…”

Section: Resultsmentioning

confidence: 99%

Section: Hydroprocessing Of Vegetable Oil Alone Over Suldedmentioning

confidence: 99%

Section: Hydroprocessing Of Vegetable Oil Alone Over Suldedmentioning

confidence: 99%

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Hydroprocessing of biomass feedstock over sulfided CoMo-, NiMo-, and NiW-supported catalysts for bio-jet fuel component production: a review

Bukhtiyarova,

Vlasova,

Bukhtiyarova

2024

Sustainable Energy Fuels

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“…After HIS, the resulting biofuel comprises a mixture of normal and isoalkanes . HIS reactions involve skeletal isomerization via formation of carbenium ions and are typically catalyzed by noble metal–zeolite bifunctional catalysts. − Regarding supports, H-mordenite or ZSM-5 with strong acidity have been proposed to adjust the iso-/ n -alkanes hydrocarbons ratio. , The selective hydroisomerization of long-chain hydrocarbons poses several challenges, namely, noble metals are sensitive to sulfur. Moreover, the strong acidity of zeolites may lead to overcracking and formation of coke.…”

Section: Introductionmentioning

confidence: 99%

Production of Biofuels from Hydrodeoxygenation and Hydroisomerization of Triglycerides with Metal-Supported SAPO-11 Molecular Sieves

Torres-Bujalance,

Prieto,

Rodriguez Espinoza

et al. 2024

Energy Fuels

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Hydroprocessing of fats and oils is being implemented as the main alternative to fossil fuels. Industrial-scale routes are based on a complex sequence of reactors and unit operations of separation: hydrodeoxygenation, fractionation, downstream hydrocracking/hydroisomerization, and final purification. In the present work, one-step conversion of triglycerides using nonsulfided metalloaded silicoaluminophosphates-11 (SAPO-11) molecular sieves is proposed to convert triglyceride feedstocks to isomerized renewable hydrocarbons. Different noble (Pd, Pt) and transition (Ni, Cu) metals were impregnated onto a SAPO-11 molecular sieve. The resulting bifunctional catalysts were characterized by ICP-OES, adsorption−desorption N 2 at −196 °C, n-propylamine temperature-programmed desorption, X-ray fluorescence spectroscopy, SEM, and TEM. The catalytic behavior was tested in a stirred tank reactor device, using refined vegetable oil as reference triglyceride. The operation conditions were set at 50 bar, 350 °C under 800 rpm stirring. The effect of the different metals on the catalytic performance was evaluated in terms of conversion of triglycerides, yield to hydrocarbons (naphtha, kerosene, diesel, and heavy fractions), and isomerization activity. The highest yield to liquid hydrocarbons of 73.1% was obtained for a nickel-based SAPO-11 with an 8% metal loading. Among the different metals evaluated (Pt, Pd, Ni, Cu), nickel showed the highest isomerization activity with the highest iso/n-paraffins ratio of 0.92. In all cases, a fraction of heavy hydrocarbon was obtained, suggesting that long residence time led to undesired side reactions.

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“…[9] The feasibility of obtaining biodiesel as an alternative source of energy depends on several factors, including the composition of the raw material or the biomass. Many studies have been developed using biomass or waste, such as waste factors [10][11] and vegetable oil [12] , even to transform vegetable oils into hydrocarbons similar to diesel oil, [13] and many processes have been applied to transform biomass into energy [14] . From these characteristics, conjugated processes were studied, to produce solid data that allow the elaboration of processes on a pilot scale to supply the local vessels themselves.…”

Section: Introductionmentioning

confidence: 99%

Study of Tucumã (Astrocaryum aculeatum)waste to produce biodiesel by conjugated processes

Lira

Portela

Júnior³

et al. 2023

Preprint

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Transforming waste material into a value-added product has been a challenge in several aspects, legal, academic, economic, and environmental. Tucumã is a fruit widely consumed by the people of the Amazon region, offering this alternative for using the waste generated by it is to provide a source of income for tucumã producers in the northern region of Brazil. To obtain results on yields and reactions that transform tucumã waste into biodiesel, first the seed oil was extracted by decoction, followed by conjugated process. The thermal cracking reaction, produced smaller chains than the raw material, followed by the esterification reaction applying heterogeneous catalysis using aluminum oxide. These processes transform the tucumã waste into esters similar to biodiesel compounds, the products were characterized by techniques such as gas chromatography coupled to mass spectrometry (GCMS) and Fourier transform infrared spectroscopy (FTIR), achieving a yield in the conversion of tucumã seed oil into methyl esters (biodiesel), above 90%, in addition, we reached specific mass parameters of 863 Kg/m3 and viscosity of 4.3 mm2/s, data that allow us to affirm that the application of conjugated reactions of this material as fuel meets the product specifications, providing added value. The data generated in this work will make it possible to open space for the studies of these processes on a pilot scale, which will enable local energy autonomy regarding the use of biodiesel.

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The conversion of coconut oil into hydrocarbons within the chain length range of jet fuel

Cited by 10 publications

References 28 publications

Hydroprocessing of biomass feedstock over sulfided CoMo-, NiMo-, and NiW-supported catalysts for bio-jet fuel component production: a review

Hydroprocessing of biomass feedstock over sulfided CoMo-, NiMo-, and NiW-supported catalysts for bio-jet fuel component production: a review

Production of Biofuels from Hydrodeoxygenation and Hydroisomerization of Triglycerides with Metal-Supported SAPO-11 Molecular Sieves

Study of Tucumã (Astrocaryum aculeatum)waste to produce biodiesel by conjugated processes

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