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    National Tsing Hua University Institutional Repository > 理學院 > 化學系 > 期刊論文 >  KINETIC-STUDIES ON THE FORMATION OF ZEOLITE ZSM-5


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/57521


    Title: KINETIC-STUDIES ON THE FORMATION OF ZEOLITE ZSM-5
    Authors: CHAO, KJ;TASI, TC;CHEN, MS;WANG, I
    教師: 趙桂蓉
    Date: 1981
    Publisher: Royal Society of Chemistry
    Relation: JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, Royal Society of Chemistry, Volume 77, 1981, Pages 547-555
    Keywords: KINETIC-STUDIES
    FORMATION
    ZEOLITE
    ZSM-5
    Abstract: Zeolite ZSM-5 was synthesized from sodium tetrapropylammonium aluminosilicate gels and tetrapropylammonium silicate gel. Effects of varying the ratio SiO2/Al2O3 and alkalinity in the starting gels and the reaction temperature were studied. The alkalinity was found to affect the rate of nucleation more than the rate of crystal growth. An optimum alkalinity exists in the synthesis of ZSM-5; the optimum value is closely related to the value of SiO2/Al2O3 ratio in the batch composition. The apparent activation energies for nucleation and crystal growth are 38 and 46 kJ mol–1, respectively, for the aluminium-free silicate system and 25 and 29 kJ mol–1, respectively, for the aluminosilicate system with SiO2/Al2O3= 70. The results are consistent with a complicated solution mechanism of crystallization.
    URI: http://www.rsc.org/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/57521
    Appears in Collections:[化學系] 期刊論文

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