Mineral replacement reactions in solid solution-aqueous solution systems: Volume changes, reactions paths and end-points using the example of model salt systems

2011 ◽  
Vol 311 (3) ◽  
pp. 211-236 ◽  
Author(s):  
K. Pollok ◽  
C. V. Putnis ◽  
A. Putnis
Keyword(s):  
Solid Solution ◽  
Aqueous Solution ◽  
Volume Changes ◽  
End Points ◽  
Mineral Replacement ◽  
Salt Systems

Reaction paths and equilibrium end-points in solid-solution aqueous-solution systems

1990 ◽  
Vol 54 (2) ◽  
pp. 267-282 ◽  
Author(s):  
Pierre D Glynn ◽  
Eric J Reardon ◽  
L.Niel Plummer ◽  
Eurybiades Busenberg
Keyword(s):  
Solid Solution ◽  
Aqueous Solution ◽  
Reaction Paths ◽  
End Points

Reply to Dr. Stoesselfs Comment on “Reaction paths and equilibrium end-points in solid-solution aqueous-solution systems”

1992 ◽  
Vol 56 (6) ◽  
pp. 2559-2572 ◽  
Author(s):  
Pierre D Glynn ◽  
Eric J Reardon ◽  
L.Niel Plummer ◽  
Eurybiades Busenberg
Keyword(s):  
Solid Solution ◽  
Aqueous Solution ◽  
Reaction Paths ◽  
End Points

scholarly journals Removal of Chromium from Aqueous Solution Using Modified Pomegranate Peel:Mechanistic and Thermodynamic Studies

2009 ◽  
Vol 6 (s1) ◽  
pp. S153-S158 ◽  
Author(s):  
Tariq S. Najim ◽  
Suhad A. Yassin
Keyword(s):  
Activation Energy ◽  
Solid Solution ◽  
Aqueous Solution ◽  
Adsorption Process ◽  
Batch Process ◽  
The Other ◽  
Water Molecules ◽  
Pomegranate Peel ◽  
Solution Interface ◽  
Adsorbent Surface

Modified pomegranate peel (MPGP) and formaldehyde modified pomegranate peel (FMPGP) were prepared and used as adsorbent for removal of Cr(VI) ions from aqueous solution using batch process. The temperature variation study of adsorption on both adsorbents revealed that the adsorption process is endothermic, from the positive values of ∆H˚. These values lie in the range of physisorption. The negative values of ∆G˚ show the adsorption is favorable and spontaneous. On the other hand, these negative values increases with increase in temperature on both adsorbents, which indicate that the adsorption is preferable at higher temperatures. ∆S˚ values showed that the process is accompanied by increase in disorder and randomness at the solid solution interface due to the reorientation of water molecules and Cr(VI) ions around the adsorbent surface. The endothermic nature of the adsorption was also confirmed from the positive values of activation energy, Ea, the low values of Ea confirm the physisorption mechanism of adsorption. The sticking probability, S*, of Cr(VI) ion on surface of both adsorbents showed that the adsorption is preferable due to low values of S*(0< S*< 1 ), but S*values are lower for FMPGP indicating that the adsorption on FMPGP is more preferable .

Fabrication and Stability of CoAl2O4 Ceramic Pigment for 3D Printing

2017 ◽  
Vol 898 ◽  
pp. 1935-1939 ◽  
Author(s):  
Yuan Song ◽  
Yuan Lin Zheng ◽  
Yu Fei Tang ◽  
Hai Bing Yang
Keyword(s):  
Solid Solution ◽  
Aqueous Solution ◽  
3D Printing ◽  
Zeta Potential ◽  
Spinel Structure ◽  
Sol Gel ◽  
Ceramic Pigment ◽  
Ceramic Pigments ◽  
Oxide Solid Solution ◽  
The Stability

Ceramic pigment is the key component of the ink color in the 3D printing process of ceramic products. The color performance and stability of ceramic pigments after calcination still need to be improved. In the present study the cobalt aluminate (CoAl2O4) ceramic pigment powders were fabricated by sol-gel method. The effects of fabrication processes on color properties of CoAl2O4 ceramic pigments were investigated. The compositions and morphologies of CoAl2O4 ceramic pigment powders were characterized. The stability of CoAl2O4 ceramic pigments was discussed. The results showed that the CoAl2O4 ceramic pigment with high chroma was obtained at calcination temperature of 1200°C and the Co/Al ratio is 1:3. The Zeta potential of the fabricated CoAl2O4 ceramic pigment powders in aqueous solution was-66.2 mV, which represented good dispersion stability. The chroma and saturation of the CoAl2O4 ceramic pigment increased owing to that the oxide solid solution in the spinel structure increased after being sintered at 1300 oC.

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