Thermochemical properties of copper forms of zeolite ZSM5 containing dimethylethylenediamine

0081092 - ÚFCH JH 2008 RIV NL eng J - Journal Article
Čuvanová, S. - Reháková, M. - Finocchiaro, P. - Pollicino, A. - Bastl, Zdeněk - Nagyová, S. - Fajnor, V. Š.
Thermochemical properties of copper forms of zeolite ZSM5 containing dimethylethylenediamine.
[Termochemické vlastnosti Cu-forem zeolitu ZSM5 obsahujícího dimethylethylendiamin.]
Thermochimica Acta. Roč. 452, č. 1 (2007), s. 13-19. ISSN 0040-6031. E-ISSN 1872-762X
R&D Projects: GA AV ČR 1ET400400413
Grant - others:GA SR(SK) 1/1385/04; GA SR(SK) 1/1373/04
Institutional research plan: CEZ:AV0Z40400503
Keywords : ZSM-5 * dimethylethylenediamine * copper * thermal analysis * XPS
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.562, year: 2007

Synthetic zeolite ZSM5 and its copper forms containing N,N-dimethylethylenediamine (dmen) have been investigated by CHN, energy dispersive spectroscopy (EDS) analysis, X-ray powder diffractometry, X-ray photoelectron spectroscopy and continuous waves hydrogen nuclear magnetic resonance (CW H-1 NMR) spectroscopy. Thermal properties have been studied by methods of thermal analysis-TG, DTA and DTG in the temperature range 20-1000 degrees C in air atmosphere. Mass spectroscopy method was used for the study of the released gas products of thermal decomposition. The results of thermal analyses of two zeolitic samples Cu-ZSM5 and Cu(dmen)(x)ZSM5 (x depends on the mode of preparation) demonstrated their different thermal properties. The main part of the decomposition process of the samples Cu(dmen)(x)ZSM5 occurs at considerably higher temperatures than the boiling point of dimethylethylenediamine, proving strong bond and irreversibility of dmen-zeolite interaction.

Syntetický zeolit ZSM5 a jeho Cu-formy obsahující N,N-dimethylethylenediamin (dmen) byli studovány metodami CHN, EDS, práškovou difraktometrií, fotoelektronovou a CW H NMR spektroskopií. Termální vlastnosti byly studovány metodami TG DTA a DTG v teplotním oboru 20-1000 oC a složení uvolňovaných plynů bylo monitorováno hmotnostní spektroskopií.
Permanent Link: http://hdl.handle.net/11104/0004006