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Fast Crystallization of LTA Zeolite from Highly Efficient NaY Seed Solution

XIONG Xiao-Yun1, FAN Feng-Tao2, MA Jun3, LI Cai-Jin1, LIU Shu-Zhen1, FENG Zhao-Chi2, LIANG De-Sheng1, LI Shou-Gui1, XIAO Feng-Shou1   

    1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China;
    2. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Dalian 116023, China;
    3. P & G Technology(Beijing) Ltd., Beijing 100084, China
  • Received:2005-12-21 Revised:1900-01-01 Online:2007-01-10 Published:2007-01-10
  • Contact: LI Shou-Gui

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Abstract: A new route for fast crystallization of LTA zeolite by using highly efficient NaY seed solution as a silica source was demostrated. Compared with water glass, NaY seed solution used in the synthesis of LTA zeolite shows obvious advantages including relatively short crystallization time, low crystallization temperature, small crystal size and low alkalinity. Characterization of NaY seed solution by 29Si NMR and UV Raman techniques suggests that zeolite primary building units such as six-membered ring contained in NaY seed solution possibly promote the nucleation and growth of LTA zeolite.

Key words: LTA zeolite, NaY seed solution, 29Si NMR, UV Raman

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