A real support effect on the hydrodeoxygenation of methyl oleate by sulfided NiMo catalysts

Coumans, Alessandro E.; Hensen, Emiel J. M.

doi:10.1016/j.cattod.2017.04.051

Cited by 40 publications

(19 citation statements)

References 52 publications

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“…As a result, green diesel provides better diesel properties in comparison to biodiesel, such as high cetane number, high energy density, very low sulfur content and since it does not contain oxygen, it is non-corrosive, more stable and it can be used in neat or blend form. [8][9][10][11][12] The SDO of triglycerides involves three different reactions, which are commonly known as hydrodeoxygenation (HDO), decarbonylation (deCO) and decarboxylation (deCO 2 ). HDO ( 1) is an exothermic reaction, which leads to a saturated hydrocarbon product that has the same number of carbon atoms as the corresponding fatty acid bound in the triglyceride, as oxygen is removed in the form of H 2 O molecules.…”

Section: Introductionmentioning

confidence: 99%

Continuous selective deoxygenation of palm oil for renewable diesel production over Ni catalysts supported on Al₂O₃and La₂O₃–Al₂O₃

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Continuous selective deoxygenation of palm oil for renewable diesel production over Ni catalysts supported on Al₂O₃and La₂O₃–Al₂O₃

et al. 2021

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“…MoS2 based catalysts [14,15,21], as opposed to oxides such as MoO3 [22,23], are tolerant against the high hydrogen pressures needed to suppress coke formation. MoS2 based catalysts are moreover moderately priced and tolerant against sulfur, inevitably present in many types of biomass, which is a clear advantage compared to transition and noble metal based catalysts.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Active Phase Loading on the Hydrodeoxygenation (HDO) of Ethylene Glycol over Promoted MoS2/MgAl2O4 Catalysts

et al. 2019

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The hydrodeoxygenation (HDO) of ethylene glycol over MgAl2O4 supported NiMo and CoMo catalysts with around 0.8 and 3 wt% Mo loading was studied in a continuous flow reactor setup operated at 27 bar H2 and 400 °C. A cofeed of H2S of typically 550 ppm was beneficial for both deoxygenation and hydrogenation and for enhancing catalyst stability. With 2.8-3.3 wt% Mo, a total carbon based gas yield of 80-100 % was obtained with an ethane yield of 36-50 % at up to 118 h on stream. No ethylene was detected. A moderate selectivity towards HDO was obtained, but cracking and HDO were generally catalyzed to the same extent by the active phase. Thus, the C2/C1 ratio of gaseous products was 1.1-1.5 for all prepared catalysts independent on Mo loading (0.8-3.3 wt%), but higher yields of C1-C3 gas products were obtained with higher loading catalysts. Similar activities were obtained from Ni and Co promoted catalysts. For the low loading catalysts (0.83-0.88 wt% Mo), a slightly higher hydrogenation activity was observed over NiMo compared to CoMo, giving a relatively higher yield of ethane compared to ethylene. Addition of 30 wt% water to the ethylene glycol feed did not result in significant deactivation. Instead, the main source of deactivation was carbon deposition, which was favored at limited hydrogenation activity and thus, was more severe for the low loading catalysts.

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“…Until recently, the catalysts containing sulphide Co(Ni)Mo phase [15][16][17][19][20][21][22][23][24] or noble metals [4,19,[25][26][27][28][29] were intensively investigated in HDO of the real feedstock and model compounds. Despite the high activity of noble metal catalysts, the high cost and shortage of noble metal restricted their practical application.…”

Section: Introductionmentioning

confidence: 99%

Synergetic Effect of Ni2P/SiO2 and γ-Al2O3 Physical Mixture in Hydrodeoxygenation of Methyl Palmitate

et al. 2017

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Abstract:The Ni 2 P/SiO 2 catalyst, which was prepared by in situ temperature-programmed reduction and in the mixture with the inert (SiC, SiO 2 ) or acidic (γ-Al 2 O 3 ) material was studied in methyl palmitate hydrodeoxygenation (HDO). Methyl palmitate HDO was carried out at temperatures of 270-330 • C, H 2 /feed volume ratio of 600 Nm 3 /m 3 , and H 2 pressure of 3.0 MPa. Ni 2 P/SiO 2 catalyst, diluted with γ-Al 2 O 3 showed a higher activity than Ni 2 P/SiO 2 catalyst diluted with SiC or SiO 2 . The conversion of methyl palmitate increased significantly in the presence of γ-Al 2 O 3 most probably due to the acceleration of the acid-catalyzed reaction of ester hydrolysis. The synergism of Ni 2 P/SiO 2 and γ-Al 2 O 3 in methyl palmitate HDO can be explained by the cooperation of the metal sites of Ni 2 P/SiO 2 and the acid sites of γ-Al 2 O 3 in consecutive metal-catalyzed and acid-catalyzed reactions of HDO. The obtained results let us conclude that the balancing of metal and acid sites plays an important role in the development of the efficient catalyst for the HDO of fatty acid esters over supported phosphide catalysts.

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A real support effect on the hydrodeoxygenation of methyl oleate by sulfided NiMo catalysts

Cited by 40 publications

References 52 publications

Continuous selective deoxygenation of palm oil for renewable diesel production over Ni catalysts supported on Al₂O₃and La₂O₃–Al₂O₃

Continuous selective deoxygenation of palm oil for renewable diesel production over Ni catalysts supported on Al₂O₃and La₂O₃–Al₂O₃

The Influence of Active Phase Loading on the Hydrodeoxygenation (HDO) of Ethylene Glycol over Promoted MoS2/MgAl2O4 Catalysts

Synergetic Effect of Ni2P/SiO2 and γ-Al2O3 Physical Mixture in Hydrodeoxygenation of Methyl Palmitate

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A real support effect on the hydrodeoxygenation of methyl oleate by sulfided NiMo catalysts

Cited by 40 publications

References 52 publications

Continuous selective deoxygenation of palm oil for renewable diesel production over Ni catalysts supported on Al2O3and La2O3–Al2O3

Continuous selective deoxygenation of palm oil for renewable diesel production over Ni catalysts supported on Al2O3and La2O3–Al2O3

The Influence of Active Phase Loading on the Hydrodeoxygenation (HDO) of Ethylene Glycol over Promoted MoS2/MgAl2O4 Catalysts

Synergetic Effect of Ni2P/SiO2 and γ-Al2O3 Physical Mixture in Hydrodeoxygenation of Methyl Palmitate

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Continuous selective deoxygenation of palm oil for renewable diesel production over Ni catalysts supported on Al₂O₃and La₂O₃–Al₂O₃

Continuous selective deoxygenation of palm oil for renewable diesel production over Ni catalysts supported on Al₂O₃and La₂O₃–Al₂O₃