LAPSE:2023.26181
Published Article
LAPSE:2023.26181
Catalytic Properties and Recycling of NiFe2O4 Catalyst for Hydrogen Production by Supercritical Water Gasification of Eucalyptus Wood Chips
March 31, 2023
Nickel iron oxide (NiFe2O4) catalyst was prepared by the combustion reaction method and characterized by XRD, N2 adsorption/desorption, thermogravimetric analysis (TG), and temperature programmed reduction (TPR). The catalyst presented a mixture of oxides, including the NiFe2O4 spinel and specific surface area of 32.4 m2 g−1. The effect of NiFe2O4 catalyst on the supercritical water gasification (SCWG) of eucalyptus wood chips was studied in a batch reactor at 450 and 500 °C without catalyst and with 1.0 g and 2.0 g of catalyst and 2.0 g of biomass for 60 min. In addition, the recyclability of the catalyst under the operating conditions was also tested using recovered and recalcined catalysts over three reaction cycles. The highest amount of H2 was 25 mol% obtained at 450 °C, using 2 g of NiFe2O4 catalyst. The H2 mol% was enhanced by 45% when compared to the non-catalytic test, showing the catalytic activity of NiFe2O4 catalyst in the WGS and the steam reforming reactions. After the third reaction cycle, the results of XRD demonstrated formation of coke which caused the deactivation of the NiFe2O4 and consequently, a 13.6% reduction in H2 mol% and a 5.6% reduction in biomass conversion.
Keywords
catalytic gasification, hydrogen production, nickel iron oxide, recycling tests, supercritical water
Suggested Citation
Borges ACP, Onwudili JA, Andrade H, Alves C, Ingram A, Vieira de Melo S, Torres E. Catalytic Properties and Recycling of NiFe2O4 Catalyst for Hydrogen Production by Supercritical Water Gasification of Eucalyptus Wood Chips. (2023). LAPSE:2023.26181
Author Affiliations
Borges ACP: Centro Interdisciplinar em Energia e Ambiente (CIENAM), Campus Universitário Federação/Ondina, Universidade Federal da Bahia (UFBA), Salvador 40170-115, Brazil [ORCID]
Onwudili JA: Energy and Bioproducts Research Institute, College of Engineering and Physical Sciences, Aston University, Birmingham B4 7ET, UK [ORCID]
Andrade H: Centro Interdisciplinar em Energia e Ambiente (CIENAM), Campus Universitário Federação/Ondina, Universidade Federal da Bahia (UFBA), Salvador 40170-115, Brazil; Instituto de Química, Universidade Federal da Bahia (UFBA), Campus Universitário de Ondin [ORCID]
Alves C: Centro Interdisciplinar em Energia e Ambiente (CIENAM), Campus Universitário Federação/Ondina, Universidade Federal da Bahia (UFBA), Salvador 40170-115, Brazil; Engenharia de Energia, Universidade Federal do Recôncavo da Bahia (UFRB), Feira de Santana [ORCID]
Ingram A: School of Chemical Engineering, University of Birmingham, Birmingham B15 2TT, UK
Vieira de Melo S: Centro Interdisciplinar em Energia e Ambiente (CIENAM), Campus Universitário Federação/Ondina, Universidade Federal da Bahia (UFBA), Salvador 40170-115, Brazil; Programa de Engenharia Industrial, Escola Politécnica, Universidade Federal da Bahia, Rua [ORCID]
Torres E: Centro Interdisciplinar em Energia e Ambiente (CIENAM), Campus Universitário Federação/Ondina, Universidade Federal da Bahia (UFBA), Salvador 40170-115, Brazil; Programa de Engenharia Industrial, Escola Politécnica, Universidade Federal da Bahia, Rua
Journal Name
Energies
Volume
13
Issue
17
Article Number
E4553
Year
2020
Publication Date
2020-09-02
Published Version
ISSN
1996-1073
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PII: en13174553, Publication Type: Journal Article
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doi:10.3390/en13174553
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Mar 31, 2023
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