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.
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Long, Y., He, H., Zheng, P. et al. Single crystal growth, morphology, and structure of ZSM-39 and its variation CF-4. Journal of Inclusion Phenomena 5, 355–362 (1987). https://doi.org/10.1007/BF00665368
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DOI: https://doi.org/10.1007/BF00665368