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Catalytic Performances of Bi-Metallic Ni-Co Catalysts in Acetic Acid Steam Reforming Reaction: Effect of Mg Incorporation

Authors
  • Ozel Sahin, Sahika
  • Arbag, Huseyin
  • Oktar, Nuray
  • Murtezaoglu, Kirali
Type
Published Article
Journal
International Journal of Chemical Reactor Engineering
Publisher
De Gruyter
Publication Date
Jun 07, 2019
Volume
17
Issue
6
Identifiers
DOI: 10.1515/ijcre-2018-0164
Source
De Gruyter
Keywords
License
Yellow

Abstract

In this study, mesoporous alumina supported bi-metallic Ni-Co catalysts were synthesized and catalytic performances were investigated in hydrogen production through steam reforming of acetic acid reaction. Mesoporous alumina support was synthesized using a sol-gel method and metals were co-impregnated into the structure of the catalyst. The physicochemical properties of the synthesized materials were characterized by XRD, N2 adsorption-desorption, SEM and TG-DT analysis. The activity test results showed that the bi-metallic [email protected] catalyst showed high and stable activity in steam reforming of acetic acid, giving a high H2 selectivity at 750 °C. Bi-metallic Ni-Co catalysts showed higher performance than monometallic Co catalyst, yielding less methane production and coke deposition. Co incorporation decreased activity of Ni catalysts at high reaction temperature of 750 °C in terms of AcOH conversion; however, improved the activity of Ni catalysts at low reaction temperature of 550 °C in terms of AcOH conversion and H2 Selectivity. Mg incorporation enhanced the coke resistance of the catalyst and further, among the bi- and tri-metallic catalysts, the lowest coke deposition was obtained over Mg incorporated [email protected] catalyst at 750 °C.

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