Citation: YAN Jie, LI Jian, ZHANG Bao-Quan, LIU Xiu-Feng. Synthesis and Characterization of Low Aspect Ratio CrCoAPO-5 Molecular Sieves[J]. Chinese Journal of Inorganic Chemistry, ;2015, (4): 749-754. doi: 10.11862/CJIC.2015.063
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The crystal morphology and size of CrCoAPO-5 molecular sieves were regulated by controlling gel preparation temperature and crystallization rate. The synthesized molecular sieves were characterized by SEM, XRD, FT-IR, UV-vis, TG, BET and ICP-OES. It was shown that hexagonal plate-like CrCoAPO-5 molecular sieves could be synthesized by conventional hydrothermal crystallization at 150℃ for 4.5 h through introducing seeds into the synthetic gels that were prepared at 5℃. The 3 μm-sized CrCoAPO-5 crystals with the aspect ratio less than 0.2 could be obtained, resulting in shorter diffusion distance and better catalytic activity compared with larger ones.
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