CJCU

Chem. J. Chinese Universities ›› 1992, Vol. 13 ›› Issue (7): 873.

• Articles •     Next Articles

Studies on the Solidification of Sepiolite with the Addition of RE-USY Zeolite by Hydrothermal Hot-Pressing

MENG Xian-ping1, JI Tian-hao1, ZHU Ding-hau1, PANG Wen-qin1, Nakamichi Yamasaki2, Kazumichi Yanagisawa2   

  1. 1. Department of Chemistry, Institute of Material Science, Jilin University, Changchun, 130023;
    2. Research Laboratory of Hydrothermal Chemistry, Faculty of Science, Kochi University, 2-5-1 Akebono-cho, Kochi-shi, 780, Japan
  • Received:1991-07-09 Online:1992-07-24 Published:1992-07-24

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Abstract: In this paper, the sepiolite from Hunan province with the addition of RE-USY zeolite was solidified by the hydrothermal hot-pressing technique.The effect of hydrothermal hot-pressing conditions on the compressive strength, density, appearance,structure changing and surface acidity of the solidified bodies was investigated by means of XRD, SEM and IR.The results show that sepiolite can be solidified easily and the solidified bodies keep the framework structure of starting materials basically.The solidified bodies have Bronsted acid sites and Lewis acid sites, but the Bronsted acidity is very weak and the Lewis acidity is stronger than that before solidifying.

Key words: Hydrothermal hot-pressing, RE-USY type molecular sieve, Sepiolite

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