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On the examples of the temperature programmed desorption of water from a NaA and a 0.45 NiNaX zeolite, it is shown that, through the use of non-linear temperature programmes with increasing heating rate, the individual desorption steps at higher temperatures of a complex desorption process are better recognizable, or can be distinguished almost completely from desorption at lower temperatures. This type of temperature processing therefore offers a suitable means of improving the finding on complex desorption processes relating to porous catalysts and other systems.

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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.

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. & Amtmann, M. (2005): A practical, theory supported approach of linear temperature programmed gas chromatographic retention indices used in the recognition experiments of Hungarian food specialities, called “Hungarics”. J. Fd Comp. Anal. , 18

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practical, theory supported approach of linear temperature programmed gas chromatographic retention indices used in the recognition experiments of Hungarian food specialities, called “Hungarics”. J. Fd Compos. Anal. , 18 , 345

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generalization of the retention index system including linear temperature programmed gas-liquid partition chromatography. J. Chromat. A , 11 , 463–471. Kratz P. A generalization of the

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Acta Biologica Hungarica
Authors: Zsuzsanna Pluhár, Marianna Kocsis, Anett Kuczmog, S. Csete, Hella Simkó, Szilvia Sárosi, P. Molnár, and Györgyi Horváth

670 677 van den Dool, H., Kratz, P. (1963) A generalization of the retention index system including linear temperature programmed gas-liquid partion chromatography. J

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. 23. Van Den Dool , H. , Kratz , P. ( 1963 ) A generalization of the retention index system including linear temperature programmed gas-liquid partition chromatography . J. Chromatogr. A. 11

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