Microalgae gasification over Ni loaded perovskites for enhanced biohydrogen generation

Soheil Valizadeh, Yasin Khani, Abid Farooq, Gopalakrishnan Kumar, Pau Loke Show, Wei Hsin Chen, See Hoon Lee, Young Kwon Park

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Steam gasification of microalgae upon perovskite oxide-supported nickel (Ni) catalysts was carried out for H2-rich gas production. Ni-perovskite oxide catalysts with partial substitution of B in perovskite structures (Ni/CaZrO3, Ni/Ca(Zr0.8Ti0.2)O3, and Ni/Ca(Zr0.6Ti0.4)O3) were synthesized and compared with those of the Ni/Al2O3 catalyst. The perovskite oxide supports improved Ni dispersion by reducing the particle size and strengthening the Ni-support interaction. Higher gas yields and H2 selectivity were obtained using Ni-perovskite oxide catalysts rather than Ni/Al2O3. In particular, Ni/Ca(Zr0.8Ti0.2)O3 showed the highest activity and selectivity for H2 production because of the synergetic effect of metallic Ni and elements present in the perovskite structures caused by high catalytic activity coupled with enhanced oxygen mobility. Moreover, increasing the temperature promoted the yield of gas and H2 content. Overall, considering the outstanding advantages of perovskite oxides as supports for Ni catalysts is a promising prospect for H2 production via gasification technology.

Original languageEnglish
Article number128638
JournalBioresource Technology
StatePublished - Mar 2023


  • Hydrogen production
  • Microalgae
  • Ni catalysts
  • Perovskite oxides
  • Steam gasification


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