Optimizing renewable oil hydrocracking conditions for aviation bio-kerosene production

Anand, M.; Farooqui, Saleem Akhtar; Kumar, Rakesh; Joshi, Rakesh; Kumar, Rohit; Sibi, Malayil Gopalan; Singh, Himanshu; Sinha, Anil K.

doi:10.1016/j.fuproc.2016.05.028

Cited by 60 publications

(21 citation statements)

References 35 publications

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“…Due to the significant effects of the interaction between temperature and space velocity, high temperature and slow space velocity produced high amounts of light hydrocarbon and gaseous products. This finding agrees with that reported by Anand et al, who state that lower space velocities (1-3 h −1 ) and higher temperatures (>400 • C) are required to increase the yield of naphtha and kerosene-range hydrocarbons, whereas the partial pressure of hydrogen had a slight effect on the formation of the kerosene fraction at higher pressures [30]. Table 4 compares the kerosene yield and selectivity values with those reported in the literature.…”

Section: Reaction and Optimizationsupporting

confidence: 90%

Optimization of Bio-Hydrogenated Kerosene from Refined Palm Oil by Catalytic Hydrocracking

2019

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In this work, hydro-processing was used as an alternative route for producing bio-hydrogenated kerosene (BHK) from refined bleached deodorized palm oil (RPO) in the presence of a 0.5 wt% Pd/Al2O3 catalyst. The Box-Behnken Design was used to determine the effects of reaction temperature, H2 pressure, and reaction time in terms of liquid hourly space velocity (LHSV) on BHK production. The kerosene selectivity was used as the response for staticial interpretation. The results show that both temperature and LHSV produced significant effects, whereas H2 pressure did not. The optimal conditions were found to be 483 °C, 5.0 MPa, and 1.4 h−1 LHSV; these conditions provided approximately 57.30% kerosene selectivity and a 47.46% yield. The BHK product had a good heating value and flash point. However, the mass percentage of carbon and hydrogen was 99.1%, which is just below the minimum standard (99.5%), according to the carbon loss by the reaction pathway to form as CO and CO2. Water can be produced from the reaction induced by oxygen removal, which results in a high freezing point.

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Section: Reaction and Optimizationsupporting

confidence: 90%

Optimization of Bio-Hydrogenated Kerosene from Refined Palm Oil by Catalytic Hydrocracking

2019

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“…The total product yield detected by GC-FID was only 51 mol%, suggesting that the higher reaction temperature and longer reaction time probably promoted hydrocracking of certain products, leading to the enhanced selectivity towards the gaseous compounds as previous reported in the literature. [41] Considering decarbonylation products, it was found that the yields of toluene and methylcyclohexane decreased from 20.9 to 2.4 mol% when the reaction temperature was increased from 220 to 260°C with 15 min reaction time, indicating that the decarbonylation was favorable when the system was operated at low temperature, whereas the hydrogenation/hydrodeoxygenation occurred at elevated reaction temperature.…”

Section: Samplementioning

confidence: 99%

Recovery of Arenes from Polyethylene Terephthalate (PET) over a Co/TiO₂ Catalyst

et al. 2021

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Upcycling of spent plastics has become a more emergent topic than ever before due to the rapid generation of plastic waste associated with the change of lifestyles of the human society. Polyethylene terephthalate (PET) is a major aromatic plastic and herein, the conversion of PET back into arenes was demonstrated in a one-pot reaction combining depolymerization and hydrodeoxygenation (HDO) over a Co/TiO 2 catalyst. The effectiveness of the Co/TiO 2 catalyst in HDO and the underlining reaction pathway were established using the PET monomer terephthalic acid (TPA) as the substrate. Quantitative TPA conversion together with 75.2 mol% xylene and toluene selectivity under 30 bar initial H 2 pressure at 340°C was achieved after 4 h reaction. More encouragingly, the catalyst induced both depolymerization and HDO reaction via CÀ O bond cleavage when PET was used as a substrate. 78.9 mol% arenes (toluene and xylene) was obtained under optimized conditions.

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“…Recently, transition metals (e.g., Ni, Co, and Mo) have been found to be extremely active catalysts for bio-oil reforming to aromatic hydrocarbons. − Earlier studies have reported on the catalytic activity of CoMo and NiMo catalysts over different supports (e.g., Al 2 O 3 , SiO 2 , activated carbon, zeolite, etc.) for hydrotreating, hydrocracking, and HDO of vegetable oils, waste cooking oil, and triglyceride model compounds for removing oxygen from these oxygenated feeds. − Very recent studies have found that Ni–W over a SiO 2 –Al 2 O 3 support substantially enhanced the hydrogenation ability of plant-oil triglycerides to aviation biokerosene compared to molybdenum-based catalyst (CoMo, NiMo) systems . The study demonstrated that sulfided Ni–W/SiO 2 –Al 2 O 3 favored the enhanced hydrocracking of waste soya oil to kerosene, while Ni–Mo/Al 2 O 3 facilitated highly active hydrotreatment of it to produce diesel range hydrocarbons .…”

Section: Introductionmentioning

confidence: 99%

Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al₂O₃ or CoMo/Al₂O₃ Catalysts

et al. 2021

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Hydrodeoxygenation (HDO) of bio-oil derived from liquefaction of a palm empty fruit bunch (EFB) in glycerol was investigated. To enhance the heating value and reduce the oxygen content of upgraded bio-oil, hydrodeoxygenation of light bio-oil over Ni- and Co-based catalysts on an Al2O3 support was performed in a rotating-bed reactor. Two consecutive steps were conducted to produce bio-oil from EFB including (1) microwave-assisted wet torrefaction of EFB and (2) solvothermolysis liquefaction of treated EFB in a Na2CO3/glycerol system. The HDO of as-prepared bio-oil was subsequently performed in a unique design reactor possessing a rotating catalyst bed for efficient interaction of a catalyst with bio-oil and facile separation of the catalyst from upgraded bio-oil after the reaction. The reaction was carried out in the presence of each mono- or bimetallic catalyst, namely, Co/Al2O3, Ni/Al2O3, NiMo/Al2O3, and CoMo/Al2O3, packed in the rotating-mesh host with a rotation speed of 250 rpm and kept at 300 and 350 °C, 2 MPa hydrogen for 1 h. From the results, the qualities of upgraded bio-oil were substantially improved for all catalysts tested in terms of oxygen reduction and increased high heating value (HHV). Particularly, the NiMo/Al2O3 catalyst exhibited the most promising catalyst, providing favorable bio-oil yield and HHV. Remarkably greater energy ratios and carbon recovery together with high H/O, C/O, and H/C ratios were additionally achieved from the NiMo/Al2O3 catalyst compared with other catalysts. Cyclopentanone and cyclopentene were the main olefins found in hydrodeoxygenated bio-oil derived from liquefied EFB. It was observed that cyclopentene was first generated and subsequently converted to cyclopentanone under the hydrogenation reaction. These compounds can be further used as a building block in the synthesis of jet-fuel range cycloalkanes.

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Optimizing renewable oil hydrocracking conditions for aviation bio-kerosene production

Cited by 60 publications

References 35 publications

Optimization of Bio-Hydrogenated Kerosene from Refined Palm Oil by Catalytic Hydrocracking

Optimization of Bio-Hydrogenated Kerosene from Refined Palm Oil by Catalytic Hydrocracking

Recovery of Arenes from Polyethylene Terephthalate (PET) over a Co/TiO₂ Catalyst

Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al₂O₃ or CoMo/Al₂O₃ Catalysts

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Optimizing renewable oil hydrocracking conditions for aviation bio-kerosene production

Cited by 60 publications

References 35 publications

Optimization of Bio-Hydrogenated Kerosene from Refined Palm Oil by Catalytic Hydrocracking

Optimization of Bio-Hydrogenated Kerosene from Refined Palm Oil by Catalytic Hydrocracking

Recovery of Arenes from Polyethylene Terephthalate (PET) over a Co/TiO2 Catalyst

Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al2O3 or CoMo/Al2O3 Catalysts

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Product

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About

Recovery of Arenes from Polyethylene Terephthalate (PET) over a Co/TiO₂ Catalyst

Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al₂O₃ or CoMo/Al₂O₃ Catalysts