Thermodynamic properties of anhydrous smectite MX-80, illite IMt-2 and mixed-layer illite smectite ISCz-1 as determined by calorimetric methods. Part I: Heat capacities, heat contents and entropies

Details Thermodynamic properties of anhydrous smectite MX-80, illite IMt-2 and mixed-layer illite smectite ISCz-1 as determined by calorimetric methods. Part I: Heat capacities, heat contents and entropies Thermodynamic properties of anhydrous smectite MX-80, illite IMt-2 and mixed-layer illite smectite ISCz-1 as determined by calorimetric methods. Part I: Heat capacities, heat contents and entropies

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007gecoa..71.5463g&link_type=abstract

Geochimica et Cosmochimica Acta, Volume 71, Issue 22, p. 5463-5473.

Physics

4

Scientific paper

The heat capacities of the anhydrous international reference clay minerals, smectite MX-80, illite IMt-2 and mixed-layer illite smectite ISCz-1, were measured by low temperature adiabatic calorimetry and differential scanning calorimetry, from 6 to 520 K (at 1 bar). The samples were chemically purified and Na-saturated. Dehydrated clay fractions <2 μm were studied. The structural formulae of the corresponding clay minerals, obtained after subtracting the remaining impurities, are K0.026NaCa(SiAl) (AlFe3+0.184MgFe2+0.038Ti)O(OH) for smectite MX-80, K0.762Na(SiAl) (AlFe3+0.292MgFe2+0.084)O(OH) for illite IMt-2 and K0.530Na(SiAl)(AlFe3+0.051MgFe2+0.017Ti)O(OH)for mixed-layer ISCz-1. From the heat capacity values, we determined the molar entropies, standard entropies of formation and heat contents of these minerals. The following values were obtained at 298.15 K and 1 bar: Cp0 (J mol-1 K-1)S0 (J mol-1 K-1)Smectite MX-80326.13 ± 0.10280.56 ± 0.16Illite IMt-2328.21 ± 0.10295.05 ± 0.17Mixed-layer ISCz-1320.79 ± 0.10281.62 ± 0.15

Affiliated with

Also associated with

No associations

Rating

Thermodynamic properties of anhydrous smectite MX-80, illite IMt-2 and mixed-layer illite smectite ISCz-1 as determined by calorimetric methods. Part I: Heat capacities, heat contents and entropies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Thermodynamic properties of anhydrous smectite MX-80, illite IMt-2 and mixed-layer illite smectite ISCz-1 as determined by calorimetric methods. Part I: Heat capacities, heat contents and entropies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermodynamic properties of anhydrous smectite MX-80, illite IMt-2 and mixed-layer illite smectite ISCz-1 as determined by calorimetric methods. Part I: Heat capacities, heat contents and entropies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-740075