High-Temperature Carbon Deposition on Oxide Surfaces by CO Disproportionation.

ABSTRACT: Carbon deposition due to the inverse Boudouard reaction (2CO → CO₂ + C) has been studied on yttria-stabilized zirconia (YSZ), Y₂O₃, and ZrO₂ in comparison to CH₄ by a variety of different chemical, structural, and spectroscopic characterization techniques, including electrochemical impedance spectroscopy (EIS), Fourier-transform infrared (FT-IR) spectroscopy and imaging, Raman spectroscopy, and electron microscopy. Consentaneously, all experimental methods prove the formation of a more or less conducting carbon layer (depending on the used oxide) of disordered nanocrystalline graphite covering the individual grains of the respective pure oxides after treatment in flowing CO at temperatures above ∼1023 K. All measurements show that duri

SUBMITTER: Kogler M 

PROVIDER: S-EPMC4735807 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature