Influence of the Ni/P ratio and metal loading on the performance of NixPy/SBA-15 catalysts for the hydrodeoxygenation of methyl oleate

Yang, Yongxing; Ochoa‐Hernández, Cristina; Pizarro, Patricia; O’Shea, Víctor A. de la Peña; Coronado, Juan M.; Serrano, David

doi:10.1016/j.fuel.2014.12.008

Cited by 72 publications

(67 citation statements)

References 34 publications

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“…It was mentioned that the catalytic activity of Ni/SBA-15 catalyst is slightly higher than demonstrated by any of the similar prepared Ni 2 P/SBA-15 samples in methyl oleate HDO [8,9]. Guan et al [10] and Xue et al [11] showed the opposite results on methyl palmitate HDO in the presence of Ni/SiO 2 and Ni 2 P/SiO 2 catalysts.…”

Section: Introductionmentioning

confidence: 92%

“…HDO of triglycerides, fatty esters and acids produce an oxygen-free mixture of alkanes which are the valuable components compatible with petroleum-based motor fuels [6]. In recent years transition metal phosphide systems have proved to be the promising catalysts in HDO of fatty acid methyl esters [7][8][9][10][11][12][13][14][15][16], fatty acids [17] and vegetable oils [5,18] as well as in co-hydroprocessing of vegetable oils and gas oil mixture [19]. Among a number of transition metal phosphides the silica-supported nickel phosphide catalysts were found to display a higher activity in HDO of aliphatic ether [7], which is converted through the complicated scheme with the participation of acid-catalyzed and metal-catalyzed reactions [7,12,14,15,20,21].…”

Section: Introductionmentioning

confidence: 99%

“…It was stated that the initial Ni/P molar ratio has a profound effect on the structure and catalytic activity of the supported nickel phosphide catalysts obtained with a conventional preparation method by temperature-programmed reduction (TPR) of nickel phosphate precursors [7,8,12,17,18,29,31,33]. Stinner et al [29] have reported that Ni/P molar ratio equal to 2 leads to the formation of Ni 12 P 5 and Ni 3 P phases over silica, Ni/P molar ratio equal to 1.7 leads to Ni 12 P 5 and Ni 2 P phases, and Ni/P molar ratio = 1.5 favors Ni 2 P phase only.…”

Section: Introductionmentioning

confidence: 99%

“…Yang et al [8] investigated the influence of Ni/P molar ratios on the performance of Ni x P y /SBA-15 catalysts in methyl oleate HDO. It was shown that Ni 2 P/SBA-15 catalyst with Ni/P = 1/1 presents the highest catalytic activity; the catalytic activity of nickel phosphide catalysts in methyl oleate HDO followed the order:…”

Section: Introductionmentioning

confidence: 99%

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HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect

et al. 2017

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Two sets of silica-supported nickel phosphide catalysts with a nickel content of about 2.5 and 10 wt % and Ni/P molar ratio 2/1, 1/1 and 1/2 in each set, were prepared by way of a temperature-programmed reduction method using (Ni(CH 3 COO) 2 ) and ((NH 4 ) 2 HPO 4 ) as a precursor. The Ni x P y /SiO 2 catalysts were characterized using chemical analysis N 2 physisorption, XRD, TEM, 31 P MAS NMR. Methyl palmitate hydrodeoxygenation (HDO) was performed in a trickle-bed reactor at 3 MPa and 290 • C with LHSV ranging from 0.3 to 16 h −1 . The Ni/P ratio was found to affect the nickel phosphide phase composition, PO x groups content and catalytic properties in methyl palmitate HDO with the TOF increased along with a decline of Ni/P ratio and a growth of PO x groups' content. Taking into account the possible routes of methyl palmitate conversion (metal-catalyzed hydrogenolysis or acid-catalyzed hydrolysis), we proposed that the enhancement of acid PO x groups' content with the Ni/P ratio decrease provides an enhancement of the rate of methyl palmitate conversion through the acceleration of acid-catalyzed hydrolysis.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect

et al. 2017

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“…This process removes oxygen from triglycerides through decarbonylation, decarboxylation, or hydrodeoxygenation (HDO) to produce mainly n-alkanes [5][6][7]. Tardity et al studied the surface properties of Ni catalysts and their correlation with catalyst activity on an ethanol steam reforming reaction [20].…”

Section: Introductionmentioning

confidence: 99%

Effect of Size and Distribution of Ni Nanoparticles on γ-Al2O3 in Oleic Acid Hydrodeoxygenation to Produce n-Alkanes

et al. 2016

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Abstract:To contribute to the search for an oxygen-free biodiesel from vegetable oil, a process based in the oleic acid hydrodeoxygenation over Ni/γ-Al 2 O 3 catalysts was performed. In this work different wt % of Ni nanoparticles were prepared by wetness impregnation and tested as catalytic phases. Oleic acid was used as a model molecule for biodiesel production due to its high proportion in vegetable oils used in food and agro-industrial processes. A theoretical model to optimize yield of n-C 17 was developed using size, distribution, and wt % of Ni nanoparticles (NPs) as additional factors besides operational conditions such as temperature and reaction time. These mathematical models related to response surfaces plots predict a higher yield of n-C 17 when physical parameters of Ni NPs are suitable. It can be of particular interest that the model components have a high interaction with operation conditions for the n-C 17 yields, with the size, distribution, and wt % of Ni NPs being the most significant. A combination of these factors statistically pointed out those conditions that create a maximum yield of alkanes; these proved to be affordable for producing biodiesel from this catalytic environmental process.

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Upgrading of Lipids to Hydrocarbon Fuels via (Hydro)deoxygenation

Kubička

2019

Chemical Catalysts for Biomass Upgrading

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Influence of the Ni/P ratio and metal loading on the performance of NixPy/SBA-15 catalysts for the hydrodeoxygenation of methyl oleate

Cited by 72 publications

References 34 publications

HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect

HDO of Methyl Palmitate over Silica-Supported Ni Phosphides: Insight into Ni/P Effect

Effect of Size and Distribution of Ni Nanoparticles on γ-Al2O3 in Oleic Acid Hydrodeoxygenation to Produce n-Alkanes

Upgrading of Lipids to Hydrocarbon Fuels via (Hydro)deoxygenation

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