Deoxygenation of microalgal oil into hydrocarbon with precious metal catalysts: Optimization of reaction conditions and supports

Na, Jeong-Geol; Yi, Bo Eun; Han, Jun Kyu; Oh, You-Kwan; Park, Jong-Ho; Jung, Tae Sung; Han, Sang Sup; Yoon, Hyung Chul; Kim, Jong‐Nam; Lee, Hyunjoo; Ko, Chang Hyun

doi:10.1016/j.energy.2012.07.004

Cited by 69 publications

(35 citation statements)

References 16 publications

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“…Much of the previous work concerning deCO x has focused on supported Pd [7,[10][11][12][13][14][15][16][17][18] or Pt [19][20][21] catalysts, which exhibit high conversion and selectivity to diesel-like hydrocarbons.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cu and Sn promotion on the catalytic deoxygenation of model and algal lipids to fuel-like hydrocarbons over supported Ni catalysts

Loe

Santillan‐Jimenez

Morgan

et al. 2016

Applied Catalysis B: Environmental

108

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The ability of Cu and Sn to promote the performance of a 20% Ni/Al 2 O 3 catalyst in the deoxygenation of lipids to fuel-like hydrocarbons was investigated using model triglyceride and fatty acid feeds, as well as algal lipids. In the semi-batch deoxygenation of tristearin at 260 °C a pronounced promotional effect was observed, a 20% Ni-5% Cu/Al 2 O 3 catalyst affording both higher conversion (97%) and selectivity to C10-C17 alkanes (99%) in comparison with unpromoted 20% Ni/Al 2 O 3 (27% conversion and 87% selectivity to C10-C17). In the same reaction at 350 °C, a 20% Ni-1% Sn/Al 2 O 3 catalyst afforded the best results, giving yields of C10-C17 and C17 of 97% and 55%, respectively, which contrasts with the corresponding values of 87 and 21% obtained over 20% Ni/Al 2 O 3. Equally encouraging results were obtained in the semi-batch deoxygenation of stearic acid at 300 °C, in which the 20% Ni-5% Cu/Al 2 O 3 catalyst afforded the highest yields of C10-C17 and C17. Experiments were also conducted at 260 °C in a fixed bed reactor using trioleina model unsaturated triglycerideas the feed. While both 20% Ni/Al 2 O 3 and 20% Ni-5% Cu/Al 2 O 3 achieved quantitative yields of diesel-like hydrocarbons at all reaction times sampled, the Cu-promoted catalyst exhibited higher selectivity to longer chain hydrocarbons, a phenomenon which was also observed in experiments involving algal lipids as the feed. Characterization of fresh and spent catalysts indicates that Cu enhances the reducibility of Ni and suppresses both cracking reactions and coke-induced deactivation.

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Section: Introductionmentioning

confidence: 99%

Effect of Cu and Sn promotion on the catalytic deoxygenation of model and algal lipids to fuel-like hydrocarbons over supported Ni catalysts

Loe

Santillan‐Jimenez

Morgan

et al. 2016

Applied Catalysis B: Environmental

108

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“…Table 4 shows a comparative analysis of reaction conditions and different metal loading on catalysts for high yields of biofuel. This comparison of catalysts displays that the PAL5 exhibited a yield of 90.5%, which is higher compared to the catalyst reported in the literature [25,[34][35][36][37][38][39][40][41]. It was noted that PAL5 showed higher performance compared to the 10Ni/g-Al 2 O 3 catalysts [36], and to the activated carbon reported by Popov et al [34].…”

Section: Conversion Of Oleic Acid By Hydrodeoxygenationmentioning

confidence: 62%

Physicochemical effect of Pt nanoparticles/γ‐Al₂O₃ on the oleic acid hydrodeoxygenation to biofuel

Sánchez-Cárdenas

Medina-Valtierra²,

Kamaraj

et al. 2017

Env Prog and Sustain Energy

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Pt/γ‐Al2O3 materials with different metal loading were prepared by incipient wetness impregnation method and tested as catalysts for hydrodeoxygenation (HDO) at 320 and 340°C with 4 and 5 h of reaction time. Oleic acid was used as model molecule in HDO process for biodiesel production, since this acid is in high proportion in waste vegetable oils used in food and agro‐industrial processes. Increasing the Pt‐nanoparticles (Pt‐NPs) content influences on obtaining higher yields of n‐C17 at optimal conditions of 335°C for 4.86 h of reaction and 4 nm of nanoparticle size, statistically determined. Yields of alkanes were theoretically optimized and using regression models for obtaining response surfaces with size (S) and distribution (V) of Pt‐NPs as additional factors to temperature and reaction time. Interestingly, The Pt‐nanoparticles parameters had a higher interaction with the rest of the other parameters for the n‐C17 yield, suggested by a statistical P value less than 0.05. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1224–1233, 2017

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“…This is advantageous from an economic perspective, given that DeCO x consumes much less H 2 than HDO. Overall, 300 • C is the optimal reaction temperature for deoxygenation of palm oil over Pt/N-AC catalyst considering the highest TG conversion and the total yield of C [8][9][10][11][12][13][14][15][16][17][18]. At this temperature the DeCO x route is favoured over the HDO pathway.…”

Section: Effect Of Temperaturementioning

confidence: 99%

“…Their results indicated that DeCO 2 is mostly favoured over Pd and Pt metal particles supported on carbon. In view of these results, investigations of fatty acid deoxygenation have been mostly focused on Pd and Pt-based catalysts in recent years [17][18][19][20][21]. Ni-based catalysts are also promising candidates for the deoxygenation of fatty acids, which could achieve comparable results with Pd and Pt catalysts by increasing their Ni content [22].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Conversion of Palm Oil to Bio-Hydrogenated Diesel over Novel N-Doped Activated Carbon Supported Pt Nanoparticles

et al. 2019

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Bio-hydrogenated diesel (BHD), derived from vegetable oil via hydrotreating technology, is a promising alternative transportation fuel to replace nonsustainable petroleum diesel. In this work, a novel Pt-based catalyst supported on N-doped activated carbon prepared from polypyrrole as the nitrogen source (Pt/N-AC) was developed and applied in the palm oil deoxygenation process to produce BHD in a fixed bed reactor system. High conversion rates of triglycerides (conversion of TG > 90%) and high deoxygenation percentage (DeCOx% = 76% and HDO% = 7%) were obtained for the palm oil deoxygenation over Pt/N-AC catalyst at optimised reaction conditions: T = 300 °C, 30 bar of H2, and LHSV = 1.5 h−1. In addition to the excellent performance, the Pt/N-AC catalyst is highly stable in the deoxygenation reaction, as confirmed by the XRD and TEM analyses of the spent sample. The incorporation of N atoms in the carbon structure alters the electronic density of the catalyst, favouring the interaction with electrophilic groups such as carbonyls, and thus boosting the DeCOx route over the HDO pathway. Overall, this work showcases a promising route to produce added value bio-fuels from bio-compounds using advanced N-doped catalysts.

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Deoxygenation of microalgal oil into hydrocarbon with precious metal catalysts: Optimization of reaction conditions and supports

Cited by 69 publications

References 16 publications

Effect of Cu and Sn promotion on the catalytic deoxygenation of model and algal lipids to fuel-like hydrocarbons over supported Ni catalysts

Effect of Cu and Sn promotion on the catalytic deoxygenation of model and algal lipids to fuel-like hydrocarbons over supported Ni catalysts

Physicochemical effect of Pt nanoparticles/γ‐Al₂O₃ on the oleic acid hydrodeoxygenation to biofuel

Catalytic Conversion of Palm Oil to Bio-Hydrogenated Diesel over Novel N-Doped Activated Carbon Supported Pt Nanoparticles

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Deoxygenation of microalgal oil into hydrocarbon with precious metal catalysts: Optimization of reaction conditions and supports

Cited by 69 publications

References 16 publications

Effect of Cu and Sn promotion on the catalytic deoxygenation of model and algal lipids to fuel-like hydrocarbons over supported Ni catalysts

Effect of Cu and Sn promotion on the catalytic deoxygenation of model and algal lipids to fuel-like hydrocarbons over supported Ni catalysts

Physicochemical effect of Pt nanoparticles/γ‐Al2O3 on the oleic acid hydrodeoxygenation to biofuel

Catalytic Conversion of Palm Oil to Bio-Hydrogenated Diesel over Novel N-Doped Activated Carbon Supported Pt Nanoparticles

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Physicochemical effect of Pt nanoparticles/γ‐Al₂O₃ on the oleic acid hydrodeoxygenation to biofuel