A new pyrolytic process with potential to convert free fatty acids into long chain nitriles and H2 intermediated by Fe nitrate
| Autor: | Rafael C. G. Pereira, Fabiano Gomes Ferreira de Paula, Helvécio C. Menezes, Breno P. Paulo, Ana Paula C. Teixeira, Zenilda de Lourdes Cardeal, Rochel Montero Lago, José D. Ardisson |
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| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Hydrogen 020209 energy chemistry.chemical_element 02 engineering and technology Direct reduced iron Decomposition Analytical Chemistry Oleic acid chemistry.chemical_compound Fuel Technology Hydrocarbon 020401 chemical engineering chemistry 0202 electrical engineering electronic engineering information engineering Pyrolytic carbon 0204 chemical engineering Carbon Pyrolysis Nuclear chemistry |
| Zdroj: | Journal of Analytical and Applied Pyrolysis. 145:104726 |
| ISSN: | 0165-2370 |
| DOI: | 10.1016/j.jaap.2019.104726 |
| Popis: | In this work, a new potential route to convert free fatty acids to long chain nitriles and fuel gas (H2/hydrocarbon) intermediated by Fe nitrate is proposed. Precursors based on Fe3+/RCOO-/NO3- were prepared by mixing Fe nitrate and oleic acid at the molar ratios 1:1 and 1:3. After pyrolytic decomposition at 550 °C, these precursors yielded three fractions, i.e. solid (8−27 wt%), liquid (22−51 wt%) and gaseous (41−51 wt%). TG, XRD, SEM, Raman, Mossbauer, CHN analyses of the solid products showed the presence of 25–52% carbon with reduced iron oxides (Fe3O4 and FeO). Analyses of the liquid fraction by GCMS, 1H/13C–NMR, CHN and FTIR clearly indicated the formation of nitriles as the main products, with selectivity of ca. 80 % and small amounts of hydrocarbons and ketones. A large gas fraction composed mainly by hydrogen and hydrocarbons (especially C3) was also formed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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