Clathrasil synthesis temperature

The phase transformation behavior of Py-D3C was far simpler than that reported for tetrahydrofuran/N2- and tetrahydrofuran/Xe-D3C in reference 10. We attribute this difference in part to impurities in the samples employed, samples that contained methanol and ethylenediamine according to 13 C CPMAS NMR spectroscopy. We have observed that use of Si(OCH3)4 as a silica source or ethylenediamine as a catalyst in clathrasil synthesis introduces defects that can alter phase transition temperatures by as much as 30 °C and/or introduce new phase transformations. 

Table 8. Influence of the synthesis temperature on the type of clathrasil formed with a given structure-directing agent... 

Up till now, no insitu growth of DD3R on supports or membrane syntheses has been reported. It is to be noted that the synthesis of this clathrasil is marked by a fixed procedure [36], making changes in concentrations or temperature, in order to study the growth on supports, difficult. 

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