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Crystallization of [Ga]-MFI Under Atmospheric Pressure

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Abstract

The crystallization of [Ga]-MFI was investigated as a function of synthesis time under atmospheric pressure. The molar composition of the reactants was 100SiO2–Ga2O3–11Na2O–11TPABr–3500H2O. The crystallinity of [Ga]-MFI was examined using several analytical instruments, such as XRD, XPS, XRF, FT-IR, solid state MAS-NMR, and DTG/DTA. [Ga]-MFI was successfully synthesized under atmospheric pressure at 97°C in 72 h. It was found that the nucleation of [Ga]-MFI took quite a long time, but the crystallization took place very fast. It is supposed that the nucleation is the rate-controlling step in [Ga]-MFI synthesis under atmospheric pressure. Consequently, if the induction period of the nucleation can be shortened, it would be possible to synthesize [Ga]-MFI commercially under atmospheric pressure.

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Authors and Affiliations

  1. Department of Chemical Engineering, Myongji University, Yongin, 449-728, South Korea

    Jinu Park, Sang-Bum Kim, Hong-Soo Park & Hyun-Sik Hahm

  2. Agency for Technology and Standards, Kwacheon, 427-716, South Korea

    Jae-Mok Ha

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  1. Jinu Park
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Park, J., Kim, SB., Ha, JM. et al. Crystallization of [Ga]-MFI Under Atmospheric Pressure. Catalysis Letters 75, 125–130 (2001). https://doi.org/10.1023/A:1016779921773

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