Catalytic SO₃ Decomposition Activity and Stability of Pt Supported on Anatase TiO₂ for Solar Thermochemical Water-Splitting Cycles.

ABSTRACT: Pt-loaded anatase TiO₂ (Pt/TiO₂-A) was found to be a highly active and stable catalyst for SO₃ decomposition at moderate temperatures (∼600 °C), which will prove to be the key for solar thermochemical water-splitting processes used to produce H₂. The catalytic activity of Pt/TiO₂-A was found to be markedly superior to that of a Pt catalyst supported on rutile TiO₂ (Pt/TiO₂-R), which has been extensively studied at a higher reaction temperature range (≥800 °C); this superior activity was found despite the two being tested with similar surface areas and metal dispersions after the catalytic reactions. The higher activity of Pt on anatase is in accordance with the abundance of metallic Pt (Pt⁰) found for t

SUBMITTER: Nur ASM 

PROVIDER: S-EPMC6645124 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature