EPR Characteristics of Activated Carbon for Hydrogen Production by the Thermo-Catalytic Decomposition of Methane

• Authors: A. Więckowski , L. Najder-Kozdrowska , P. Rechnia , A. Malaika , B. Krzyżyńska , M. Kozłowski
• Languages of publication: EN

Abstracts

EN

The electron paramagnetic resonance (EPR) method was used to characterize samples of activated coal before and after reactions of the catalytic decomposition of methane and ethanol at temperatures of 1023 K (750°C), 1123 K (850°C) and 1223 K (950°C). The EPR parameters: spectroscopic splitting factor g, peak-to-peak linewidth ΔBₚₚ, and spin concentration c were measured. During the ethanol-assisted catalytic decomposition of methane carbon-located-spin radicals are partially transformed into oxygen-located-spin radicals.

Keywords

EN

33.35.+r; 61.66.Hq; 76.30.-v; 82.30.Lp; 82.65.+r; 88.30.ej

Discipline

• 61.66.Hq: Organic compounds
• 82.30.Lp: Decomposition reactions (pyrolysis, dissociation, and fragmentation)
• 88.30.ej: Thermochemical hydrogen
• 82.65.+r: Surface and interface chemistry; heterogeneous catalysis at surfaces(for temporal and spatial patterns in surface reactions, see 82.40.Np; see also 82.45.Jn Surface structure, reactivity and catalysis in electrochemistry; see also 68.43.-h Chemisorption/physisorption: adsorbates on surfaces)
• 33.35.+r: Electron resonance and relaxation(see also 76.30.-v Electron paramagnetic resonance and relaxation in condensed matter)
• 76.30.-v: Electron paramagnetic resonance and relaxation(see also 33.35.+r Electron resonance and relaxation in atomic and molecular physics; 87.80.Lg Magnetic and paramagnetic resonance in biological physics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2016
• Volume: 130
• Issue: 3
• Pages: 701-704

Dates

published

2016-09

received

2015-12-14

Contributors

author

A. Więckowski

• Institute of Physics, Faculty of Physics and Astronomy, University of Zielona Góra, Z. Szafrana 4a, 65-516 Zielona Góra, Poland
• Department of Superconductivity and Phase Transitions, Division of Physics of Dielectrics and Molecular Spectroscopy, Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

L. Najder-Kozdrowska

• Institute of Physics, Faculty of Physics and Astronomy, University of Zielona Góra, Z. Szafrana 4a, 65-516 Zielona Góra, Poland

author

P. Rechnia

• Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznań, Poland

author

A. Malaika

• Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznań, Poland

author

B. Krzyżyńska

• Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznań, Poland

author

M. Kozłowski

• Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.130.701