Effect of a second metal (Co, Fe, Mo and W) on performance of Ni2P/SiO2 for hydrodeoxygenation of methyl laurate

Pan, Zhengyi; Wang, Rijie; Nie, Ziyang; Chen, Jixiang

doi:10.1016/j.jechem.2016.02.007

Cited by 54 publications

(37 citation statements)

References 45 publications

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“…Along with the hydrogenolysis reactions, hydrolysis of ester giving the acid and methanol as a result of ester and water interaction is also considered [56,57,62,64,65]. The acid P-OH groups of Ni 2 P particles supported on silica have been proposed to provide the hydrolysis reaction [44,46].…”

Section: Hydrodeoxygenation Of Methyl Palmitate Over Ni 2 P/sio 2 Catmentioning

confidence: 99%

“…In particular, the nickel phosphide catalysts exhibit the high activity and stability in the HDO of model compounds [44,46,48,50,[55][56][57][58][59][60][61][62][63][64][65][66] and vegetable oils [51,67], as well as in co-hydrotreatment of renewable oils with petroleum-derived distillates [68].…”

Section: Introductionmentioning

confidence: 99%

“…Both metallic and acid-base properties play an important role in the transformation of the aliphatic ester into acid, which could proceed through hydrogenolysis of C-O bond of ester group over metallic sites or through acid-catalyzed hydrolysis. It was proposed that the conversion of ester to carboxylic acids could proceed with participation of Brønsted acid sites of silica-supported nickel phosphide [44,47,56,57,62]. Besides, the Lewis acid sites of the alumina support were presumed to enhance the rate of hydrolysis of aliphatic esters over sulphide catalysts [20,21].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Hydrodeoxygenation Of Methyl Palmitate Over Ni 2 P/sio 2 Catmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2017

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“…As to phosphide catalysts, various paths of ester conversion to intermediate products are considered in the reported schemes . Some authors considered alternatively hydrogenolysis (1) or hydrolysis (2) reactions, while both reactions are considered in a number of works . Also, the reaction of ester to aldehyde (3) is included in some schemes, while reaction of ester to alcohol (4) is not included in any schemes for phosphide catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…Some authors considered alternatively hydrogenolysis (1) or hydrolysis (2) reactions, while both reactions are considered in a number of works . Also, the reaction of ester to aldehyde (3) is included in some schemes, while reaction of ester to alcohol (4) is not included in any schemes for phosphide catalysts. Transesterification of ester (5) is included in one of the schemes and reaction of ester to C n −1 alkene (6) or to C n −1 alkane (7) is considered in several schemes.…”

Section: Introductionmentioning

confidence: 99%

Methyl palmitate hydrodeoxygenation over silica‐supported nickel phosphide catalysts in flow reactor: experimental and kinetic study

Shamanaev

Deliy

Aleksandrov

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND The search for alternative sources of fuels is crucial for sustainable development now and in the near future. Biomass attracts much attention as an environmentally friendly, green and CO2‐neutral source of fuels. Hydrodeoxygenation (HDO) of fatty acid‐based feedstocks such as nonedible vegetable oil, waste cooking oil and animal fat is a versatile technology for producing efficient fuels. HDO schemes are often contradictory and have different numbers of stages. In the work reported, a highly active nickel phosphide catalyst was obtained and methyl palmitate (MP) HDO kinetic modelling was carried out to elucidate the HDO reaction scheme. RESULTS The effect of reduction temperature (400–600 °C) on the catalytic properties of the catalyst in MP HDO was evaluated and the most active catalyst (after reduction at 450 °C) was used in the kinetic experiments. The experimental data were collected in a wide range of MP conversion. The reaction scheme of MP HDO was elucidated by means of mathematical modelling which was specified by successive consideration of the experimental results of HDO selectivities at low MP conversions (1–10%), additional experiments of alcohol HDO (dodecanol‐1 as an analogue for hexadecanol‐1) and analysis of gas‐phase products. CONCLUSIONS In accordance with the results obtained, both hydrolysis of MP and hydrogenolysis of C&bond;OCH3 bond should be considered for describing the conversion of MP to intermediate compounds. This finding could explain the synergetic effect of acid and metal centres, which has been reported in the literature on aliphatic ester HDO, and justify the higher activity of bifunctional catalysts in this reaction. © 2019 Society of Chemical Industry

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Upgrading of Lipids to Hydrocarbon Fuels via (Hydro)deoxygenation

Kubička

2019

Chemical Catalysts for Biomass Upgrading

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Effect of a second metal (Co, Fe, Mo and W) on performance of Ni2P/SiO2 for hydrodeoxygenation of methyl laurate

Cited by 54 publications

References 45 publications

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

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

Methyl palmitate hydrodeoxygenation over silica‐supported nickel phosphide catalysts in flow reactor: experimental and kinetic study

Upgrading of Lipids to Hydrocarbon Fuels via (Hydro)deoxygenation

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