Zeolite thermodynamics and kinetics. Final report for June 15, 1996 to June 15, 2000 to the U.S. Department of Energy, Geosciences Research Program, Office of Basic Energy Sciences on Grant No. DE-FG02-96ER14634

Technical Report · Thu Jun 15 04:00:00 EDT 2000

DOI:https://doi.org/10.2172/811795· OSTI ID:811795

Barnes, H L ^[1]; Wilkin, R T; Benning, L G

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1. The Pennsylvania State University/ College of Earth and Mineral Science, University Park, PA (US)

This report summarizes results obtained on the thermodynamic and kinetic properties of zeolites. DOE funding supported the development of techniques of material preparation as well as experimental strategies and methods for measuring solubilities, hydration states, and rates of zeolite dissolution, precipitation, and nucleation. The hydrothermal experiments provided temperature-dependent solubility products, hydration states, and a set of standard free energies of formation for end-member Na-, K-, and Ca-clinoptilolite, mordenite, and analcime. Flow-through experimental methods were used to measure the rates of Na-clinoptilolite and analcime dissolution and precipitation as a function of reaction affinity to 250C. Finally, the experimental system was modified so that the clinoptilolite-to-analcime transformation was monitored, and its rates and mechanisms were evaluated.

• Research Organization: Department of Geosciences, The Pennsylvania State University, University Park, PA (US)
• Sponsoring Organization: Office of Basic Energy Sciences, USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: FG02-96ER14634
• OSTI ID: 811795
• Report Number(s): DOE/ER/14634--1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CLINOPTILOLITE
DISSOLUTION
FABRICATION
HYDRATION
KINETICS
MORDENITE
PHASE TRANSFORMATIONS
PRECIPITATION
SOLUBILITY
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0400-1000 K
THERMODYNAMIC PROPERTIES
THERMODYNAMICS
ZEOLITES