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 shu

Synthesis and Characterization of Low Aspect Ratio CrCoAPO-5 Molecular Sieves

1.
State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Corresponding author: LIU Xiu-Feng,
Received Date: 3 November 2014
Available Online: 12 December 2014
Fund Project: 国家自然科学基金(No.21136008,21476171)资助项目。 (No.21136008,21476171)

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.
- AFI molecular sieve;CrCoAPO-5;seed crystal;plate-like grains
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沈阳化工大学材料科学与工程学院沈阳 110142