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Comprehensive Summary
Rare earth (RE) ions, with abundant 4f energy level and unique electronic arrangement, are considered as substitutes for Pb2+ in perovskite nanocrystals (PNCs), allowing for partial or complete replacement of lead and minimizing environmental impact. This review provides a comprehensive overview of the characteristics of RE‐doped PNCs, including up‐conversion luminescence, down‐conversion...
HMCM‐22 catalysts modified with La2O3 (5% La) and MgO (≈0.87% Mg) were prepared respectively by impregnation method, and were characterized by scanning electron microscopy, X‐ray diffraction, N2 physical adsorption‐desorption and temperature‐programmed desorption of NH3. The effect of supported metallic oxides (La2O3, MgO) on catalytic performance in xylene isomerization of C8 aromatics (ethylbenzene,...
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