Live encapsulation of a Keggin polyanion in NH2-MIL-101(Al) observed by in situ time resolved X-ray scattering
2011
The templating effect of the Keggin polyanion derived from phosphotungstic acid (PTA) during the synthesis of NH2-MIL-101(Al) has been investigated by means of in situSAXS/WAXS. Kinetic analysis and structural observations demonstrate that PTA acts as a nucleation site and that it stabilizes the precursor phase NH2-MOF-235(Al). Surprisingly kinetics of formation are little changed.
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