Catalytic supercritical water gasification of eucalyptus wood chips in a batch reactor

A.c.p. Borges, J.a. Onwudili, H.m.c. Andrade, C.t. Alves, A. Ingram, S.a.b. Vieira De Melo, E.a. Torres

Research output: Contribution to journalArticle

Abstract

Eucalyptus wood chips were reacted under supercritical water conditions to evaluate the effect of a NiFe2O4 catalyst, residence time and temperature parameters. Experiments were performed in a batch reactor at 400 °C , 450 °C and 500 °C using three different amounts of catalyst (0, 1.0, 2.0 g) and three different residence times (30, 45, 60 min). Results showed that eucalyptus wood chips reacted and produced CO2 as the dominant gas in all cases, followed by H2 and CH4. However, the presence of NiFe2O4 catalyst led to a 60% increase in H2 produced, while significantly reducing the solid residue and enhancing the percentage of methyl derivatives in the organic liquid products. The highest H2 mol% was at 450 °C, 2 g of catalyst and 60 min of residence time. Analysis of the derived oils showed that they were mostly composed of ketones, aldehydes, methylbenzenes and alkylated phenols. Increasing the reaction temperature to 500 °C increased the molar composition of methane by 62% compared to its yield at 450 °C. In generally, this work showed that NiFe2O4 acted as an effective heterogeneous catalyst for improved production of H2 and CH4 via supercritical water gasification process.
Original languageEnglish
Article number115804
JournalFuel
Volume255
Early online date25 Jul 2019
DOIs
Publication statusPublished - 1 Nov 2019

Bibliographical note

© 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Fingerprint Dive into the research topics of 'Catalytic supercritical water gasification of eucalyptus wood chips in a batch reactor'. Together they form a unique fingerprint.

  • Profiles

    No photo of Jude Onwudili

    Jude Onwudili

    Person: Academic

    Cite this

    Borges, A. C. P., Onwudili, J. A., Andrade, H. M. C., Alves, C. T., Ingram, A., Vieira De Melo, S. A. B., & Torres, E. A. (2019). Catalytic supercritical water gasification of eucalyptus wood chips in a batch reactor. Fuel, 255, [115804]. https://doi.org/10.1016/j.fuel.2019.115804