Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
American Mineralogist Email Content Delivery
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
American Mineralogist; September 2001; v. 86; no. 9; p. 1100-1111
© 2001 Mineralogical Society of America
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Web of Science (10)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Blencoe, J. G.
Right arrow Articles by Anovitz, L. M.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

The CO2-H2O system: III. A new experimental method for determining liquid-vapor equilibria at high subcritical temperatures

James G. Blencoe*, Michael T. Naney and Lawrence M. Anovitz

Chemical and Analytical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Building 4500-S, Oak Ridge, Tennessee 37831-6110, U.S.A.

Correspondence: * E-mail: blencoejg{at}ornl.gov

A highly precise and accurate vibrating U-tube technique was developed to determine the upper baric stabilities of liquid-vapor assemblages in the CO2-H2O system at high subcritical temperatures (~275–360 °C). The first step is to create an isobaric-isothermal, physically isolated and chemically homogeneous sample of "high-pressure" CO2-H2O fluid of known composition. Fluid pressure (P) is then lowered slowly at constant temperature. Pressure readings and matching values for {tau} (the period of vibration of the U-tube) are recorded at 0.1 or 0.2 MPa intervals. When the fluid begins to separate into two phases (liquid + vapor), a distinct inflection is observed in the trend of P vs. {tau}. Performing such experiments for fluid compositions at 0.05 mole fraction CO2 (XCO2) intervals in the range 0.05 ≤ XCO2 ≤ 0.40 at 300 °C produced a complete high-P liquid-vapor boundary curve for the CO2-H2O system at that temperature. Agreement with corresponding curves determined in previous studies ranges from poor to excellent.




This article has been cited by other articles:


Home page
 Reviews in Mineralogy and GeochemistryHome page
A. Liebscher
Experimental Studies in Model Fluid Systems
Reviews in Mineralogy and Geochemistry, July 1, 2007; 65(1): 15 - 47.
[Full Text] [PDF]

Home page
 American MineralogistHome page
J. G. Blencoe and J. G. Blencoe
The CO2-H2O system: IV. Empirical, isothermal equations for representing vapor-liquid equilibria at 110-350 {degrees}C, P <= 150 MPa
American Mineralogist, October 1, 2004; 89(10): 1447 - 1455.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2009 by Mineralogical Society of America