Rod-Like Nanoporous CeO₂ Modified by PdO Nanoparticles for CO Oxidation and Methane Combustion with High Catalytic Activity and Water Resistance.

ABSTRACT: A PdO/CeO₂ composite with a rod-like nanoporous skeletal structure was prepared by combining the dealloying of Al-Ce-Pd alloy ribbons with calcination. For CO oxidation and CH₄ combustion, the nanoporous PdO/CeO₂ composite exhibits excellent catalytic activity, and the complete reaction temperatures of CO and CH₄ are 80 °C and 380 °C, respectively. In addition, the composite possesses excellent cycle stability, CO₂ toxicity, and water resistance, and the catalytic activity hardly decreases after 100 h of long-term stability testing in the presence of water vapour (2 × 10⁵ ppm). The results of a series of characterizations indicate that the enhanced catalytic activity can be attributed to the good dispersion of the PdO nanopa

SUBMITTER: Duan D 

PROVIDER: S-EPMC6554377 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature