Síntese de biocombustíveis drop-in via descarboxilação fotocatalítica
The environmental impacts generated by the emission of CO2 and the energy insecurity of fossil fuels have attracted the attention of governments and transport sectors around the world. In this context, the replacement of petroleum derivatives by drop-in biofuels appears as an alternative for miti...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/48974 |
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| Resumo: | The environmental impacts generated by the emission of CO2 and the energy insecurity of fossil
fuels have attracted the attention of governments and transport sectors around the world. In this
context, the replacement of petroleum derivatives by drop-in biofuels appears as an alternative
for mitigating greenhouse gases (GHG) and diversifying the energy matrix. In Brazil, with the
creation of the fuels of the future program, the development and incorporation of these biofuels
is projected, and investments in R, D&I have been carried out with the objective of diversifying
the biomass used and their conversion methods, which are currently expensive because they
require harsh operating conditions and use non-renewable hydrogen gas. Therefore, the
development of a synthetic route for converting new biomasses into drop-in biofuels using mild
and H2-free conditions is desirable. Thus, in this work two photocatalytic systems were
developed for the deoxygenation of fatty acids, which made it possible to obtain
biohydrocarbons using organic catalysts under conditions of ambient temperature and pressure,
free of metals and hydrogen gas. After optimization, the protocols were able to convert fatty
acids into Cn-1 hydrocarbons with high selectivity, including a conversion greater than 99% of
the acids obtained from licuri oil to produce a mixture of C9-C17, which is compatible with the
range of biojet and green diesel. |
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