Tracking Lattice Distortion Induced by Defects and Framework Tin in Beta Zeotypes.

64 A clear trend of morphology change is also observed with increasing tin loading, in which the growth of pyramidal ( h0l ) faces is more significant with higher tin loading compared with pinacoidal (001) faces, leading to plate-like shape crystals, which is consistent with previous research. 19 Tin oxide particles are also found on the Sn-Beta crystals, indicating the formation of extraframework tin oxide during the hydrothermal synthesis process, especially in samples with higher tin loadings.

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These results are consistent with the experimental parameters obtained for the HT samples, which show an increasing trend in the c / a ratio upon tin insertion and contain a mixture of closed and open sites.

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