Siliceous ferrierite

Figure 4.15. Schematic representation of A. observed and B.,C. calculated Si NMR spectra of the five Si sites in siliceous ferrierite zeolite. The ab initio calculations are based on two reported structural models, and indicate a clearly better fit to model B. From Bull et al. (2000), by permission of the American Chemical Society.

P-06 - Studies on desorption behavior of organics on siliceous ferrierite... 

TG/DTG/DTA was employed to determined the At value, affinity index, for comparing the interaction between the perfect Si-0 framework of siliceous ferrierite and the adsorbed organic compounds with various functional groups, such as alkyl-amines, alkyl-alcohols and n-alkanes. The relation between At values and interaction strength (AHi) is discussed as well. 

Kamimura Y, Kowenje C., Yamanaka K., Itabashi K., Endo A., Okubo T. Synthesis of hydrophobic siliceous ferrierite by using pyridine and sodium fluoride. Microporous and Mesoporous Materials 181,154-159 (2013). 

Fig. 11. Single crystal of siliceous ferrierite. (a) As-synthesized and (b) calcinated crystal viewed along the lOMR channels ([100]-direction top) and 8MR channels ([010]-direction, bottom), respectively. Oxygen atoms of the

Fig. 12. Siliceous ferrierite, Sii6032. Thermal variations of the cell parameters and volume [03B1],...

Fig. 40. Pure siliceous ferrierite. (a, b) Si MAS NMR spectra of pure siliceous ferrierite [06D1], (b) Decomposition of the 133-K spectrum [04D1, 06D1], (cont.)...

Fig. 40. (cont.) Pure siliceous ferrierite. (c)RT Si MAS INADEQUATE NMR spectrum [94M4]. (d) Temperature dependences of the isomer shifts [04D1]. 

Fig. 48. Siliceous ferrierite. 2-D NMR MQ MAS spectrum showing in the vertical direction the MQ MAS scaled isotropic spectrum (projection along the y axis) and in horizontal direction the anisotropic line shapes for the five resolved peaks. Simulations of each of the anisotropic line shapes are shown on the right of the figure and were fitted using the Pq values obtained from the field dependence of the NMR experiments [00B2].

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