Metal sulfate decomposition using green Pd-based catalysts supported on ΓAl2O3 and SiC: A common step in sulfur-family thermochemical cycles

Oliver Soto-Díaz, Raul E. Orozco-Mena, Manuel Román-Aguirre, Hernando Romero-Paredes, Alejandro A. Camacho-Dávila, Víctor H. Ramos-Sánchez

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Thermochemical water splitting cycles (TWSCs) are processes with the potential for large-scale production of carbon-free hydrogen. Among these, the sulfur-family thermochemical cycles are considered the most promising due to both, the use of readily affordable chemical reagents and the temperature required to thermally decompose oxygenated sulfur compounds, which is achievable by solar means. Indeed, solar heat assisted metal sulfate decomposition is a key step, where catalysis can be employed to reduce decomposition temperature. Here we present a green route to synthesize Ag-Pd and Fe-Pd intermetallic alloy catalysts supported over γ-Al2O3 and Si-C by a microwave-assisted method using glycerol both as a solvent and as a reducing and stabilizing agent. The obtained supported catalysts were physicochemically characterized. Fe-Pd/Al2O3 catalyst exhibited the best performance, abating the zinc sulfate decomposition temperature by ca. 85 °C in comparison with other reported catalysts.

Original languageEnglish (US)
Pages (from-to)12309-12314
Number of pages6
JournalInternational Journal of Hydrogen Energy
DOIs
StatePublished - May 9 2019
Externally publishedYes

Keywords

  • Glycerol
  • Green catalyst
  • Sulfur-family thermochemical cycles
  • Synchrotron X-ray diffraction
  • Zinc sulfate

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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