h1

%0 Thesis
%A Simons, Thomas
%T Impedanzspektroskopie als Methode zur in situ-Reaktionsbeobachtung der DeNOx-SCR-Reaktion an Zeolithen und verwandten Materialien; 1. Aufl.
%V 3
%I Zugl.: Aachen, Techn. Hochsch.
%V Dissertation
%C Aachen
%M RWTH-2015-03870
%@ 978-3-86359-338-4
%B Ergebnisse aus den Naturwissenschaften
%P VI, 205 S. : Ill., graph. Darst.
%D 2015
%Z Weitere Reihen: Anorganische Chemie. - Edition Wissenschaft Apprimus
%Z Zugl.: Aachen, Techn. Hochsch., Diss., 2015
%X 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.
%F PUB:(DE-HGF)11 ; PUB:(DE-HGF)3
%9 Dissertation / PhD ThesisBook
%U https://publications.rwth-aachen.de/record/480761