Hydroprocessed rapeseed oil as a source of hydrocarbon-based biodiesel

Šimáček, Pavel; Kubička, David; Šebor, Gustav; Pospı́šil, M.

doi:10.1016/j.fuel.2008.10.022

Cited by 242 publications

(83 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…All catalysts showed higher yields of alkanes n-C 17 and n-C 18 after 5 h of reaction time. On the other hand, a higher temperature produces decarbonylation and decarboxylation reactions, mainly producing n-C 17 [33]. After 5 h, the n-C 17 yield was higher at 340 • C, giving similar results using a catalytic material with 7 wt % of Ni, as reported by Kaewmeesri et al [34].…”

Section: Conversion Of Oleic Acid By Hydrodeoxygenationsupporting

confidence: 82%

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

et al. 2016

View full text Add to dashboard Cite

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.

show abstract

Section: Conversion Of Oleic Acid By Hydrodeoxygenationsupporting

confidence: 82%

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

et al. 2016

View full text Add to dashboard Cite

show abstract

“…However, due to the degree of unsaturation and high oxygen content of the FAMEs, issues such as poor storage stability, marginal cold flow and engine compatibility limit their widespread use. [5,6] An alternate technology to produce biofuels from microalgal oil is through hydrotreating with Ni, Co and Mo sulfides or noble metal catalysts such as Pd and Pt supported on metal oxides. [7][8][9][10][11][12][13][14] While the high price of the noble metals can be avoided by using the sulfided catalysts, slow desulfurization reduces their activity and contaminates the fuel.…”

Section: Introductionmentioning

confidence: 99%

Supported iron nanoparticles for the hydrodeoxygenation of microalgal oil to green diesel

Kandel

Anderegg

Nelson

et al. 2014

Journal of Catalysis

140

View full text Add to dashboard Cite

Iron nanoparticles supported on mesoporous silica nanoparticles (Fe-MSN) catalyze the hydrotreatment of fatty acids with high selectivity for hydrodeoxygenation over decarbonylation and hydrocracking. The catalysis is likely to involve a reverse Mars-Van Krevelen mechanism, in which the surface of iron is partially oxidized by the carboxylic groups of the substrate during the reaction. The strength of the metal-oxygen bonds that are formed affects the residence time of the reactants facilitating the successive conversion of carboxyl first into carbonyl and then into alcohol intermediates, thus dictating the selectivity of the process. The selectivity is also affected by the pretreatment of Fe-MSN, the more reduced the catalyst the higher the yield of hydrodeoxygenation product. Fe-MSN catalyzes the conversion of crude microalgal oil into dieselrange hydrocarbons. Disciplines Materials Chemistry | Other Chemistry | Physical ChemistryComments NOTICE: this is the author's version of a work that was accepted for publication in Journal of Catalysis. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Catalysis, [314, (2014)

show abstract

“…Before GC-MS analysis, the fatty acids of the extracted Jatropha curcas seed oil were derivatized into their methyl esters [18,19]. The Jatropha curcas seed oil was weighed (100 μL) and dissolved in 4 mL isooctane.…”

Section: Jatropha Curcas L Seeds Oilmentioning

confidence: 99%

Cascade Extraction and Separation of the Active Constituents from <i>Jatropha Curcas </i>L. Seeds

Liu

Pan

Liang

et al. 2015

SERDJ

View full text Add to dashboard Cite

A new method of cascade extraction and separation of active constituents from Jatropha curcas L. seeds was designed to explore the multi-utilization of Jatropha oil cake. Effort has been devoted to convert the Jatropha oil cake into high value-added products. The Jatropha oil was extracted by an ultrasonic method and other active constituents were prepared by means of flash extraction and resin chromatography etc.; the Jatropha oil was analyzed by GC-MS and the contents of the active constituents were determined by UV spectrophotometry. The yields of Jatropha oil and the active constituents were as follows, Jatropha oil 37.42 g/100 g dry seeds, polysaccharide 0.46 g/100 g dry seeds (purity 75.72%), protein 2.06 g/100 g dry seeds (purity 72.61%), respectively. Furthermore, the contents of flavone was 0.90 g/100 g dry seeds, phytosterol was 0.50 g/100 g dry seeds, anthocyanin was 0.12 g/100 g dry seeds and alkaloids was 1.90 g/100 g dry seeds. Additionally, the molecular weight and antioxidant activity of polysaccharides from Jatropha curcas L. seeds were also evaluated.

show abstract

Hydroprocessed rapeseed oil as a source of hydrocarbon-based biodiesel

Cited by 242 publications

References 12 publications

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

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

Supported iron nanoparticles for the hydrodeoxygenation of microalgal oil to green diesel

Cascade Extraction and Separation of the Active Constituents from <i>Jatropha Curcas </i>L. Seeds

Contact Info

Product

Resources

About