Abstract
Temperature-programmed desorption of ammonia from the H form of a modernite was carried out after pretreatment at different temperatures. It could be shown that a quantitative registration of the acidic OH groups is possible. Moreover, from the desorption curves, information is obtained about the alteration of the acidic properties as a function of the temperature of pretreatment.
Zusammenfassung
Es wurde die Temperatur-Programmierte Desorption von Ammoniak an der H-Form eines Mordenits nach Vorbehandlung bei unterschiedlichen Temperaturen untersucht. Es konnte gezeigt werden, daß damit eine quantitative Erfassung der Anzahl der sauren OH-Gruppen möglich ist. Außerdem erhält man aus den Desorptionskurven Hinweise über die Veränderung der sauren Eigenschaften in Abhängigkeit von der Vorbehandlungstemperatur.
Резюме
Иучена температурно-программная десорбц ия аммиака на Н-форме мор денита, предварительно обра ботанного при различ ных температурах. Показа на возможность количественного опр еделения кислотных О Н групп. Кроме того, данные пол ученные на основе кривых десорбции ука зывают на изменение к ислотных свойств морденита в з ависимости от температуры его обра ботки.
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References
S. M. Csicsery, Zeolites, 4 (1984) 202.
V. Mavrodinova, Ch. Minchev, L. Kozova and V. Penchev, Proceedings of the Symposium of Zeolite Catalysis, Siófok (Hungary), 1985, p. 339.
V. Kanazirev and N. Borisova, Zeolites, 2 (1982) 23.
N.-Y. Topsoe, K. Pedersen and E. G. Derouane, J. Catal., 70 (1981) 41.
J. G. Post and J. H. C. van Hooff, Zeolites, 4 (1984) 9.
L. M. Parker, D. M. Bibby and R. H. Meinhold, Zeolites, 5 (1985) 384.
B. M. Lok, B. K. Marcus and C. L. Angell, Zeolites, 6 (1986) 185.
C. V. Hidalgo, H. Itoh, T. Hattori, M. Niwa and Y. Murakami, J. Catal., 85 (1984) 362.
M. Iwamoto, M. Tajima and S. Kagawa, J. Chem. Soc, Chem: Commun., (1986) 598.
M. Nakano, T. Hironaka, S. Fujii and K. Sekizawa, Toyo Soda Kenkyu Hokoku, 29 (1985) 3.
M. Niwa, S. Kato, T. Hattori and Y. Murakami, J. Chem. Soc, Faraday Trans. I, 80 (1984) 3135.
C. Mirodatos, B. H. Ha, K. Otsuka and D. Barthomeuf, Proceedings of the 5th International Conference on Zeolites (L. V. Rees, Ed.) Heyden, London, 1980, p. 382.
J. Schweckendiek, Thesis, University Bremen, G. F. R. (1982).
M. B. Sayed, A. Auroux and J. C. Vedrine, Appl. Catal., 23 (1986) 49.
M. Krivánek and P. Jiru, Collect. Czechoslovak Chem. Commun., 49 (1984) 2739.
A. Auroux, V. Bolis, P. Wierzchowski, P. C. Gravelle and J. C. Vedrine, J. Chem. Soc., Faraday Trans. I, 75 (1979) 2544.
A. L. Klyachko, I. Bankós, T. R. Brueva and G. I. Kapustin, React. Kinet. Catal. Lett., 29 (1985) 451.
G. I. Kapustin, T. R. Brueva, A. L. Klyachko, A. D. Ruhadze and A. M. Rubinstein, Kinet. Katal., 23 (1982) 972.
G. I. Kapustin, L. M. Kustov, G. O. Glonti, T. R. Brueva, V. U. Borovkov, A. L. Klyachko, A. M. Rubinstein and V. B. Kazanskii, Kinet. Katal., 25 (1984) 1129.
A. K. Ghosh and G. Curthoys, J. Chem. Soc, Faraday Trans. I, 79 (1983) 2569.
A. K. Ghosh and G. Curthoys, J. Phys. Chem., 88 (1984) 1130.
H. Pfeifer, D. Freude and M. Hunger, Zeolites, 5 (1985) 274.
D. Freude, M. Hunger, H. Pfeifer and W. Schwieger, Chem. Phys. Lett., 128 (1986) 62.
H. K. Beyer, A. Kiss, J. Mihalyfi and P. A. Jacobs, J. Chem. Soc, Faraday Trans. I, 76 (1980) 332.
G. H. Kühl, Proceedings of the 4th International Conference on Molecular Sieves, ACS Symposium Series, 40 (1977) 96.
H. G. Karge, Z. Phys. Chem. NF, 122 (1980) 103.
J. Hoffmann, B. Hunger, U. Streller, Th. Stock, D. Dombrowski and A. Barth, Zeolites, 5(1985) 31.
B. Hunger and J. Hoffmann, Thermochim. Acta, 106 (1986) 133.
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Hunger, B., Hoffmann, J. & Mothsche, P. Temperature-programmed desorption (TPD) of ammonia from the H form of a mordenite after different pretreatment temperatures. Journal of Thermal Analysis 32, 2009–2014 (1987). https://doi.org/10.1007/BF01913993
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DOI: https://doi.org/10.1007/BF01913993