Acta Phys. -Chim. Sin. ›› 2005, Vol. 21 ›› Issue (06): 616-621.doi: 10.3866/PKU.WHXB20050608

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Kinetics Study of Zeolite in Hydrothermal Solutions

ZHANG Xue-tong; ZHANG Rong-hua   

  1. Open Research Laboratory of Geochemical Kinetics, Chinese Academy of Geological Sciences, Beijing 100037; School of Material Science and Technology, China University of Geosciences, Beijing 100083
  • Received:2004-10-14 Revised:2004-12-20 Published:2005-06-15
  • Contact: ZHANG Xue-tong

Abstract: In this paper, we conducted a series of experiments on zeolite in water and in acidic solutions using a continuous stirred tank reactor(CSTR) of an open system. We measured the reaction rates for zeolite with water and with low pH solutions at room temperature, and conducted associated studies of mineral surfaces by using SEM and SIMS. The results showed that incongruent dissolution of zeolite was related to the surface chemical modifications.

Key words: Mineral surface, Reaction kinetics, Incongruent dissolution, Liquid /solid interface