ISSN:
1573-1111
Keywords:
Single crystal
;
X-ray diffraction
;
ZSM-39
;
CF-4
;
zeolite
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Single crystals of ZSM-39 and its variation CF-4 were crystallized with various habits. The crystals had a size up to 450 μm and were hydrothermally grown over a period of 8 to 72 days from a gel system consisting of amine-alcohol-SiO2−H2O at 200°C. The amines used were MA (methylamine), TMEDA (N,N,N′,N′-tetramethylenediamine), TMAOH, TEAOH, isopropylamine,tert-butylamine, hexahydropyridine,n-propylamine, andN,N-dimethylethanolamine. The alcohols used were glycerine, ethylene glycol, and 1,3-propanediol. The highest quality crystals of ZSM-39 were grown in a system of MA−SiO2−H2O, and CF-4, in the MA-glycerine-SiO2−H2O system. The optical properties of these crystals were observed and crystal structures were measured from both powder and single crystal diffraction data.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00665368
Permalink