Beitrag
X-ray Rietveld analysis of cation exchanged zeolite-L(LTL)
Sato, Mitsuo; Morikawa, Kenzi; Kurosawa, Satοsi
European Journal of Mineralogy Volume 2 Number 6 (1990), p. 851 - 860
8 Literaturangaben
veröffentlicht: Dec 14, 1990
Manuskript akzeptiert: Jul 2, 1990
Manuskript erhalten: Feb 7, 1990
DOI: 10.1127/ejm/2/6/0851
Abstract
Abstract X-ray Rietveld analysis is applied to synthetic zeolite-L which was exchanged with various alkali and alkaline earth cations. Some of the cation sites proposed by Barrer & Villiger (B, D, and E) are easily confirmed, but not the A and C sites. Site F is here found in the centre of the main channel. In the exchangeable site D, sodium, strontium and barium ions are bonded to six wall oxygens and two water molecules, while caesium bonds in six wall oxygens and one water molecule. Twelve water molecules bond to the site F cations. Apart from these water molecules, there are some waters loosely connected with wall oxygens in the main channel. Differential thermal analysis curves show corresponding dehydration peaks.
Schlagworte
Rietveld analysis • zeolite-L • cation exchanged