Bi-metallic Ni–Fe LSF perovskite for chemical looping hydrogen application

Vincenzo Spallina, Adam Zaidi, Christopher De Leeuwe

Research output: Contribution to journalArticlepeer-review

Abstract

This work introduces a novel composite bimetallic perovskite Fe 2O 3-NiO/La 0.6Sr 0.4FeO 3 as an oxygen carrier for chemical looping hydrogen production. The materials were tested in a 2-g packed bed reactor at different temperatures ranging from 500 to 900 °C and atmospheric pressure by alternating three-stage chemical looping hydrogen reactions. Fe[sbnd]Ni bimetallic interactions and La 0.6Sr 0.4FeO 3 (LSF-641) resistance to carbon deposition resulted in a stable material with only a 2% oxygen capacity drop over 20 redox cycles. The modified LSF exhibited a 20 increase in H 2 generation compared to LSF-641. These results demonstrate the effectiveness of doping Fe with Ni to generate more stable OC and the low H 2 generation of LSF coupled with its greater redox cycling. Pre- and post-experimental (SEM-EDX) characteristics showed a homogenous distribution of Ni and Fe on the surface, thus confirming high stability to metal oxide cluster formation or sign of sintering.

Original languageEnglish
Article number119510
Number of pages9
JournalPowder Technology
Volume436
Issue number436
Early online date6 Feb 2024
DOIs
Publication statusPublished - 1 Mar 2024

Keywords

  • Chemical looping hydrogen
  • CO capture
  • LSF
  • Oxygen carrier synthesis

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