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Reactive Liftoff of Crystalline Cellulose Particles

The condition of heat transfer to lignocellulosic biomass particles during thermal processing at high temperature (>400 °C) dramatically alters the yield and quality of renewable energy and fuels. In this work, crystalline cellulose particles were discovered to lift off heated surfaces by high sp...

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Detalles Bibliográficos
Autores principales: Teixeira, Andrew R., Krumm, Christoph, Vinter, Katherine P., Paulsen, Alex D., Zhu, Cheng, Maduskar, Saurabh, Joseph, Kristeen E., Greco, Katharine, Stelatto, Michael, Davis, Eric, Vincent, Brendon, Hermann, Richard, Suszynski, Wieslaw, Schmidt, Lanny D., Fan, Wei, Rothstein, Jonathan P., Dauenhauer, Paul J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4460903/
https://www.ncbi.nlm.nih.gov/pubmed/26057818
http://dx.doi.org/10.1038/srep11238
Descripción
Sumario:The condition of heat transfer to lignocellulosic biomass particles during thermal processing at high temperature (>400 °C) dramatically alters the yield and quality of renewable energy and fuels. In this work, crystalline cellulose particles were discovered to lift off heated surfaces by high speed photography similar to the Leidenfrost effect in hot, volatile liquids. Order of magnitude variation in heat transfer rates and cellulose particle lifetimes was observed as intermediate liquid cellulose droplets transitioned from low temperature wetting (500–600 °C) to fully de-wetted, skittering droplets on polished surfaces (>700 °C). Introduction of macroporosity to the heated surface was shown to completely inhibit the cellulose Leidenfrost effect, providing a tunable design parameter to control particle heat transfer rates in industrial biomass reactors.