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- W2520431132 abstract "Mass losses related to the vaporization/decomposition of myristic acid, either pure or adsorbed on SiO2, γ-Al2O3, SiO2-Al2O3 and HZSM-5 catalysts were obtained by non isothermal thermogravimetric analysis from room temperature up to 650 °C. The adsorption of myristic acid on catalysts greatly changed the mass loss behavior of myristic acid, suggesting a significant decomposition of this fatty acid during heating as compared to its essentially simple volatilization in absence of catalyst. A model-free kinetic was used to estimate the values of apparent activation energy of the mass losses from experiments performed at heating rates of 3, 7, 10 and 15 °C min−1. In absence of a catalyst, myristic acid presented a single mass loss event with an activation energy value of ∼87–90 kJ mol−1. In the case of myristic acid adsorbed on SiO2,γ-Al2O3, SiO2-Al2O3 and HZSM-5 at least two different mass loss events occurred during linear heating, associated to myristic acid volatilization/decomposition. The activation energies calculated for both these events, with the exception of myristic acid adsorbed on silica, exhibited values much higher than 90 kJ mol−1. The apparent activation energy of the second mass loss events was always higher than that of the first mass loss events. Activation energy of the second mass loss reached a value as high as 190 kJ mol−1 at which point myristic acid was strongly adsorbed on HZSM-5. Such a high value suggests CC and CH bond ruptures and not only decarboxylation often described as the main reaction path when saturated fatty acids are pyrolyzed." @default.
- W2520431132 created "2016-09-23" @default.
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- W2520431132 date "2017-07-01" @default.
- W2520431132 modified "2023-10-18" @default.
- W2520431132 title "Thermocatalytic cracking kinetics of myristic acid adsorbed on catalysts with different acidity" @default.
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- W2520431132 doi "https://doi.org/10.1016/j.cattod.2016.08.026" @default.
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