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Investigation of changes in catalyst for conversion by means of steam during use in an industrial reactor

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Abstract

A study was made of the changes in the active component of a commercial catalyst for methane reforming by means of steam, as a function of its duration of use and of its position in an industrial reactor. The samples for examination were taken after 3, 8, 9 and 20 months of catalyst use, and from seven different levels in the reformer tube, ranging from the top to the bottom.

DTA, TG, IR spectroscopy, X-ray diffraction and surface area determination were used to follow the catalyst changes.

Zusammenfassung

Veränderungen der aktiven Komponente eines kommerziellen Katalysators zur Methanreformierung mittels Wasserdampf wurden in Abhängigkeit von der Betriebsdauer und der Lage im industriellen Reaktor untersucht. Proben für die Untersuchung wurden nach 3-, 8-, 9- und 20-monatiger Betriebsdauer aus 7 verschiedenen Höhen vom Boden bis zum Kopf des Reformer-Rohres entnommen. Veränderungen des Katalysators wurden mittels DTA, TG, IR-Spektroskopie, Röntgendiffraktometrie und Oberflächenmessungen verfolgt.

Резюме

Проведено исследова ние изменений активн ой компоненты катализа тора, ис-пользуемого в крекинге метана, обр аботкой его парами в з ависимости от продолжитель@2ност и его использования и р асположения его в реа кторе. Для исследования были вз яты образцы катализатор а после 3, 8, 9 и 20 месячного его использования и из ра зличных мест его расположени я в крекинг-трубе, начи ная с ее верхней части и конча я самой ниж-ней. Для установления про цессов изменения кат ализатора, были использованы ме тоды ДТА, ТГ, ИК спектроскоп ии, рентгенофазового анализа, а также определения пл ощади поверхности.

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Rasulić, G., Milanović, L., Jovanović, S. et al. Investigation of changes in catalyst for conversion by means of steam during use in an industrial reactor. Journal of Thermal Analysis 30, 73–82 (1985). https://doi.org/10.1007/BF02128117

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