Syntheses of Zeolite-A and X from Kaolinite Activated by Mechano-chemical Treatment.

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  • Kim Wantae
    Institute for Advanced Materials Processing, Tohoku University
  • Zhang Qiwu
    Institute for Advanced Materials Processing, Tohoku University
  • Saito Fumio
    Institute for Advanced Materials Processing, Tohoku University

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A novel process for synthesizing zeolite-A and X from kaolinite activated by dry grinding is investigated. The process consists of grinding of kaolinite and subsequent reaction with NaOH solution at 60°C. Zeolite-A and X can be synthesized from the process under normal pressure. Crystallization of zeolite-A and X is influenced by the activated state of kaolinite, and the formation of zeolite-X is accelerated as the activated state of kaolinite is improved. Wet milling of activated kaolinite in NaOH solution promotes formation of zeolite-X, of which specific surface area becomes extremely large.

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