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TY  - THES
AU  - Simons, Thomas
TI  - Impedanzspektroskopie als Methode zur in situ-Reaktionsbeobachtung der DeNOx-SCR-Reaktion an Zeolithen und verwandten Materialien; 1. Aufl.
VL  - 3
PB  - Zugl.: Aachen, Techn. Hochsch.
VL  - Dissertation
CY  - Aachen
M1  - RWTH-2015-03870
SN  - 978-3-86359-338-4
T2  - Ergebnisse aus den Naturwissenschaften
SP  - VI, 205 S. : Ill., graph. Darst.
PY  - 2015
N1  - Weitere Reihen: Anorganische Chemie. - Edition Wissenschaft Apprimus
N1  - Zugl.: Aachen, Techn. Hochsch., Diss., 2015
AB  - This thesis discuss in situ reaction monitoring by means of impedance spectroscopy (IS). As a model reaction DeNOx-SCR at zeolites was chosen. This work is based on solvate supported proton transport mechanisms in zeolites. This conductivity could be measured in situ using impedance spectrsocopy. In a first step the descrimination of thermal desorption and catalytic conversion of ammonia over pure and metal-loaded zeolites was demonstrated by means of temperature as well as time depending IS. For detailed analysis a special-build measuring setup for simultaneous IS and DRIFTS was used. Additional to zeolites a porous zirconia-phosphate-based heterostructure was analyzed by means of IS in this thesis. It was shown that the general solvate-supported proton transport mechanisms could be transfered to this new class of materials. In a third part of this thesis the non-porous, semiconductiong material ammonia paratungstate (APT-4) was analyzed. For this material the thermal decomposition as well as the transformation of tungsten suboxide to tungsten oxide was monitored by in situ IS.
LB  - PUB:(DE-HGF)11 ; PUB:(DE-HGF)3
UR  - https://publications.rwth-aachen.de/record/480761
ER  -