Study of complex desorption processes on porous catalysts by means of temperature-programmed desorption (TPD) with non-linear temperature programmes |
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Authors: | B Hunger J Hoffmann |
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Institution: | (1) Department of Chemistry, Karl Marx University, DDR-7010 Leipzig |
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Abstract: | Through simulation of TPD model curves for desorption from adsorption sites of different strength could be shown that the use of non-linear temperature programmes influences the complex desorption process in such a manner that the appearing desorption maxima are better visible.Because in case of using non-linear temperature programmes the overlapping of different desorption processes is smaller it is possible to evaluate approximately the activation parameters for the single steps from the complex desorption curve.
Zusammenfassung Durch Simulationsrechnungen für ein einfaches Modell der Desorption von Adsorptionsplätzen verschiedener Stärke kann gezeigt werden, daß bei Verwendung nichtlinearer Temperaturprogramme auftretende Desorptionsmaxima der komplexen Desorptionskurve besser erkennbar sind Da bei nichtlinearer Temperaturführung die Überlagerung mehrerer Prozesse geringer ist, können die Aktivierungsparameter der einzelnen Prozesse näherungsweise aus der komplexen Desorptionskurve ermittelt werden.
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![dcy](/content/x70u05m03277n937/xxlarge1076.gif) ![scy](/content/x70u05m03277n937/xxlarge1089.gif) ![tcy](/content/x70u05m03277n937/xxlarge1090.gif) ![acy](/content/x70u05m03277n937/xxlarge1072.gif) ![vcy](/content/x70u05m03277n937/xxlarge1074.gif) ![lcy](/content/x70u05m03277n937/xxlarge1083.gif) ![yacy](/content/x70u05m03277n937/xxlarge1103.gif) ![iecy](/content/x70u05m03277n937/xxlarge1077.gif) ![tcy](/content/x70u05m03277n937/xxlarge1090.gif) ![scy](/content/x70u05m03277n937/xxlarge1089.gif) ![vcy](/content/x70u05m03277n937/xxlarge1074.gif) ![ocy](/content/x70u05m03277n937/xxlarge1086.gif) ![zcy](/content/x70u05m03277n937/xxlarge1079.gif) ![ocy](/content/x70u05m03277n937/xxlarge1086.gif) ![zhcy](/content/x70u05m03277n937/xxlarge1078.gif) ![ncy](/content/x70u05m03277n937/xxlarge1085.gif) ![ycy](/content/x70u05m03277n937/xxlarge1099.gif) , ![icy](/content/x70u05m03277n937/xxlarge1080.gif) ![scy](/content/x70u05m03277n937/xxlarge1089.gif) ![khcy](/content/x70u05m03277n937/xxlarge1093.gif) ![ocy](/content/x70u05m03277n937/xxlarge1086.gif) ![dcy](/content/x70u05m03277n937/xxlarge1076.gif) ![icy](/content/x70u05m03277n937/xxlarge1080.gif) ![kcy](/content/x70u05m03277n937/xxlarge1082.gif) ![ocy](/content/x70u05m03277n937/xxlarge1086.gif) ![mcy](/content/x70u05m03277n937/xxlarge1084.gif) ![pcy](/content/x70u05m03277n937/xxlarge1087.gif) ![lcy](/content/x70u05m03277n937/xxlarge1083.gif) ![iecy](/content/x70u05m03277n937/xxlarge1077.gif) ![kcy](/content/x70u05m03277n937/xxlarge1082.gif) ![scy](/content/x70u05m03277n937/xxlarge1089.gif) ![ncy](/content/x70u05m03277n937/xxlarge1085.gif) ![ocy](/content/x70u05m03277n937/xxlarge1086.gif) ![kcy](/content/x70u05m03277n937/xxlarge1082.gif) ![rcy](/content/x70u05m03277n937/xxlarge1088.gif) ![icy](/content/x70u05m03277n937/xxlarge1080.gif) ![vcy](/content/x70u05m03277n937/xxlarge1074.gif) ![ocy](/content/x70u05m03277n937/xxlarge1086.gif) ![iecy](/content/x70u05m03277n937/xxlarge1077.gif) ![scy](/content/x70u05m03277n937/xxlarge1089.gif) ![ocy](/content/x70u05m03277n937/xxlarge1086.gif) ![rcy](/content/x70u05m03277n937/xxlarge1088.gif) ![bcy](/content/x70u05m03277n937/xxlarge1073.gif) ![tscy](/content/x70u05m03277n937/xxlarge1094.gif) ![icy](/content/x70u05m03277n937/xxlarge1080.gif) , ![pcy](/content/x70u05m03277n937/xxlarge1087.gif) ![rcy](/content/x70u05m03277n937/xxlarge1088.gif) ![icy](/content/x70u05m03277n937/xxlarge1080.gif) ![bcy](/content/x70u05m03277n937/xxlarge1073.gif) ![lcy](/content/x70u05m03277n937/xxlarge1083.gif) ![icy](/content/x70u05m03277n937/xxlarge1080.gif) ![zcy](/content/x70u05m03277n937/xxlarge1079.gif) ![icy](/content/x70u05m03277n937/xxlarge1080.gif) ![tcy](/content/x70u05m03277n937/xxlarge1090.gif) ![lcy](/content/x70u05m03277n937/xxlarge1083.gif) ![softcy](/content/x70u05m03277n937/xxlarge1100.gif) ![ncy](/content/x70u05m03277n937/xxlarge1085.gif) ![ocy](/content/x70u05m03277n937/xxlarge1086.gif) ![tscy](/content/x70u05m03277n937/xxlarge1094.gif) ![iecy](/content/x70u05m03277n937/xxlarge1077.gif) ![ncy](/content/x70u05m03277n937/xxlarge1085.gif) ![icy](/content/x70u05m03277n937/xxlarge1080.gif) ![tcy](/content/x70u05m03277n937/xxlarge1090.gif) ![acy](/content/x70u05m03277n937/xxlarge1072.gif) ![kcy](/content/x70u05m03277n937/xxlarge1082.gif) ![tcy](/content/x70u05m03277n937/xxlarge1090.gif) ![icy](/content/x70u05m03277n937/xxlarge1080.gif) ![vcy](/content/x70u05m03277n937/xxlarge1074.gif) ![acy](/content/x70u05m03277n937/xxlarge1072.gif) ![tscy](/content/x70u05m03277n937/xxlarge1094.gif) ![icy](/content/x70u05m03277n937/xxlarge1080.gif) ![ocy](/content/x70u05m03277n937/xxlarge1086.gif) ![ncy](/content/x70u05m03277n937/xxlarge1085.gif) ![ncy](/content/x70u05m03277n937/xxlarge1085.gif) ![ycy](/content/x70u05m03277n937/xxlarge1099.gif) ![pcy](/content/x70u05m03277n937/xxlarge1087.gif) ![acy](/content/x70u05m03277n937/xxlarge1072.gif) ![rcy](/content/x70u05m03277n937/xxlarge1088.gif) ![acy](/content/x70u05m03277n937/xxlarge1072.gif) ![iecy](/content/x70u05m03277n937/xxlarge1077.gif) ![tcy](/content/x70u05m03277n937/xxlarge1090.gif) ![rcy](/content/x70u05m03277n937/xxlarge1088.gif) ![ocy](/content/x70u05m03277n937/xxlarge1086.gif) ![tcy](/content/x70u05m03277n937/xxlarge1090.gif) ![dcy](/content/x70u05m03277n937/xxlarge1076.gif) ![iecy](/content/x70u05m03277n937/xxlarge1077.gif) ![lcy](/content/x70u05m03277n937/xxlarge1083.gif) ![softcy](/content/x70u05m03277n937/xxlarge1100.gif) ![ncy](/content/x70u05m03277n937/xxlarge1085.gif) ![ycy](/content/x70u05m03277n937/xxlarge1099.gif) ![scy](/content/x70u05m03277n937/xxlarge1089.gif) ![tcy](/content/x70u05m03277n937/xxlarge1090.gif) ![acy](/content/x70u05m03277n937/xxlarge1072.gif) ![dcy](/content/x70u05m03277n937/xxlarge1076.gif) ![icy](/content/x70u05m03277n937/xxlarge1080.gif) ![rcy](/content/x70u05m03277n937/xxlarge1088.gif) ![iecy](/content/x70u05m03277n937/xxlarge1077.gif) ![kcy](/content/x70u05m03277n937/xxlarge1082.gif) ![tscy](/content/x70u05m03277n937/xxlarge1094.gif) ![icy](/content/x70u05m03277n937/xxlarge1080.gif) .
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