Title:
Li/MgO with spin sensors as catalyst for the oxidative coupling of methane
Author(s):
Simon, U.; Arndt, S.; Otremba, T.; Schlingmann, T.; Görke, O.; Dinse, K. P.; Schomäcker, R.; Schubert, H.
Year of publication:
2012
Available Date:
2014-09-04T08:58:19.312Z
Abstract:
Co-doping of Li/MgO, a well-known catalyst for the oxidative coupling of
methane, was investigated. It is demonstrated that Gd3+ and Fe3+ can be used
as spin sensors in these solids to investigate the structure via EPR
spectroscopy. These aliovalent ions occupy Mg2+ sites in the lattice; the
expected coupling with charge-compensating neighboring Li+ was detected. A
strong increase of the activity was observed. However, all samples suffered
from deactivation. The solubility of Gd3+ in MgO turned out to be inhibited.
No such restriction was observed for Fe3+.
Part of Identifier:
ISSN (print): 15667367
Keywords:
Oxidative coupling of methane
Li/MgO
Transition metal oxides
Cation substitution
Spin sensor
EPR
DDC-Classification:
530 Physik
Publication Type:
Wissenschaftlicher Artikel
Also published in:
Catalysis Communications. - 18 (2012), S. 132-136
URL of the Original Publication:
DOI of the Original Publication:
Department/institution:
Physik
Institut für Experimentalphysik
