Production and characterization of the biofuels obtained by thermal cracking and thermal catalytic cracking of vegetable oils

Prado, Cinara Machado Rodrigues do; Filho, Nelson Roberto Antoniosi

doi:10.1016/j.jaap.2009.08.005

Cited by 99 publications

(68 citation statements)

References 18 publications

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“…[14][15][16][17] When using catalysts, the degree of deoxygenation is generally enhanced. 18 In such cases, the C number in the products is not always lower than the C number of the original feed. [19][20][21] When the catalysts have strong acid sites, the amount of liquid alkenes and alkanes is decreased whereas important amounts of aromatic compounds are formed.…”

Section: Introductionmentioning

confidence: 99%

Flash Pyrolysis of Oleic Acid as a Model Compound Adsorbed on Supported Nickel Catalysts for Biofuel Production

Fréty¹,

Santos²,

Sales³

et al. 2014

Journal of the Brazilian Chemical Society

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A pirólise rápida do ácido oleico foi estudada sobre catalisadores com 10% Ni suportados em sílica e alumina. Os catalisadores foram impregnados com 10% m/m de ácido oleico. Os precursores secos e os catalisadores contendo ácido oleico foram caracterizados por análise termogravimétrica. Os catalisadores calcinados foram analisados por difração de raios X (XRD) e redução à temperatura programada (TPR). As amostras com ácido oleico adsorvido foram submetidos à pirólise rápida a 650 °C. A pirólise de ácido oleico puro levou a 10% de conversão, enquanto a pirólise catalítica resultou em praticamente completa conversão. O catalisador NiO/alumina produziu mais hidrocarbonetos do que o NiO/sílica. Os principais produtos obtidos com NiO/sílica foram 1-alcenos, enquanto que os principais produtos obtidos com NiO/alumina foram isômeros de alcenos e aromáticos, e pequenas quantidades de compostos oxigenados, principalmente álcoois. A pirólise rápida de ácido oleico adsorvido em catalisadoras representa um método útil para distinguir as propriedades dos catalisadores e suas diferentes atividades.Flash pyrolysis of oleic acid was studied over 10 wt.% nickel catalysts supported on silica and alumina. The catalysts were impregnated with 10 wt.% oleic acid. The dried precursors and the catalysts containing oleic acid were characterized by thermogravimetric analysis. The calcined catalysts were analyzed by X-ray diffraction (XRD) and temperature programmed reduction (TPR). Samples containing adsorbed oleic acid were submitted to flash pyrolysis up to 650 °C. Whereas pyrolysis of oleic acid without catalyst converted only about 10%, the pyrolysis of oleic acid adsorbed on catalysts allowed practically a complete conversion. NiO/alumina yielded a higher amount of liquid hydrocarbons than NiO/silica. The main products obtained with NiO/silica were 1-alkenes, whereas the main products obtained with NiO/alumina were alkene isomers and aromatics. Small amounts of oxygenated compounds were also observed, principally alcohols. The flash pyrolysis of oleic acid adsorbed on different catalyst surfaces appears as a useful way to distinguish activity trends of different catalyst samples.

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Section: Introductionmentioning

confidence: 99%

Flash Pyrolysis of Oleic Acid as a Model Compound Adsorbed on Supported Nickel Catalysts for Biofuel Production

Fréty¹,

Santos²,

Sales³

et al. 2014

Journal of the Brazilian Chemical Society

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“…In addition to these aforementioned bands between 1734 and 1751 cm -1 , which correspond to the presence of aliphatic saturated occurring between 1750 and 1735 cm -1 . Due to this displacement, the appearance of bands such as 1375, 1722 and 1716 cm -1 , corresponding to functions of carboxylic acids, ketones, and hydrocarbons, confirming the breakdown of triglyceride molecules, and the formation of oxygenated and non-oxygenated, as a function of cracking primary [22,23]. The presence of bands between 3000-2840 cm -1 corresponding to the normal alkane hydrocarbons function associated with the presence of these 1375 cm -1 band relating to the deformation vibration of CH angular methyl groups, confirms the presence of the saturated alkanes in the OLP produced.…”

Section: Infrared Of the Productsmentioning

confidence: 81%

Production and Characterization of Green gasoline Obtained by Thermal Catalytic Cracking of Crude Palm Oil (Elaeis guineensis, Jacq.) in a Pilot Plant

Mota¹,

Mancio²,

Borges³

et al. 2017

Scientia Plena

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“…Of particular note, green algae have been shown to have potential for the production of hydrocarbons [50], especially the microalga Botryococcus braunii, which can contain up to 86% of hydrocarbons in dry weight basis [53]. B braunii has the capacity to produce bio-hydrocarbons similar to petroleum, capable of being transformed into high octane gasoline through hydrocracking processes [54,55]. This strain is classified into three different races according to the type of hydrocarbon it produces.…”

Section: Hydrocarbonsmentioning

confidence: 99%

Microalgae biorefineries: applications and emerging technologies

Giraldo

Romo-Buchelly

Arbeláez-Pérez

et al. 2018

DYNA

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Microalgae transform CO2 into a broad portfolio of biomolecules, and thus should be considered as a valuable biotechnological platform. Despite several research programs and global efforts to establish a sustainable microalgae-based industry, most applications have not transcended academic boundaries. This limitation raises from the high transformation costs when target products are biofuels or fertilizers. Microalgae biorefinery emerges as an alternative to improve economic competitiveness, as Under such a model scope, the process inputs come from industrial waste, while biomass exploitation prioritizes the highest value molecules followed by extraction of less valuable compounds. This review describes a wide range of microalgae exploitation schemes focused on new uses of its constituents, while discussing emerging technologies designed to improve production and efficiencies as well.Keywords: microalgae; biorefinery; biofuels; fertilizers; active biomolecules. Biorefinerías de microalgas: aplicaciones actuales y nuevas tecnologías en desarrolloResumen Las microalgas transforman el CO2 en un amplio portafolio de biomoléculas, por lo cual, son consideradas una valiosa plataforma biotecnológica. A pesar de múltiples programas de investigación y esfuerzos globales para establecer una industria sostenible basada en microalgas, la mayoría de las aplicaciones potenciales no han trascendido las fronteras académicas. Esta limitación se debe a los altos costos en la transformación del producto principalmente cuando se obtiene compuestos económicos como biocombustibles y fertilizantes. La biorefinería de microalgas surge como alternativa para incrementar la competitividad económica. En este modelo, los insumos del proceso provienen de residuos industriales, mientras que la explotación de la biomasa inicia con las moléculas de alto valor y finaliza con los compuestos menos valiosos. En esta revisión se describe un amplio abanico de esquemas de explotación de microalgas enfocado en nuevos usos de sus constituyentes. Además, se exploran las tecnologías emergentes destinadas a aprovechar esta biomasa de una manera más versátil y eficiente.

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Production and characterization of the biofuels obtained by thermal cracking and thermal catalytic cracking of vegetable oils

Cited by 99 publications

References 18 publications

Flash Pyrolysis of Oleic Acid as a Model Compound Adsorbed on Supported Nickel Catalysts for Biofuel Production

Flash Pyrolysis of Oleic Acid as a Model Compound Adsorbed on Supported Nickel Catalysts for Biofuel Production

Production and Characterization of Green gasoline Obtained by Thermal Catalytic Cracking of Crude Palm Oil (Elaeis guineensis, Jacq.) in a Pilot Plant

Microalgae biorefineries: applications and emerging technologies

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