The more rapid dissolution of the surface covered with ONa sites was attributed to a steric effect consisting of easier access of water to the silica network following an existing model for the dissolution of crystalline quartz. The presence of KCl and CaCl2 in the leachant also resulted in ...
The reaction equation of production of carbon dioxide in laboratory for CaCO3 + 2HCl = CaCl2 + H2O + CO2 =. The 6. industry in addition to rust acid is commonly used in dilute hydrochloric acid, dilute sulfuric acid; in addition to test for rust rust phenomenon disappeared and the ...
SFL, produced by dissolving in LiBr aqueous solution for 6h, showed the highest MW level. In the three SFC samples, produced by dissolving SF in CaCl2/H2O/EtOH solution for dissolution times ranging from 3 to 180min, the MW of the SFs decreased with increasing dissolution time and a new ...
Fresh electrolyte enters at the bottom of the cell, reacts with the specimen, and is removed from the cell at the top containing all dissolved species coming from the specimen. The temperature of the reaction is controlled by placing the electrolyte reservoir in a thermal regulated...
On dissolving in water (s ¼ À1) the step velocity in different directions was of the order of 1 nm/s. Comparison with the step velocity in the growth process shows that the kinetic coefficient of the steps in the dissolution process is greater than that in growing. This can be ...
High salinity waters with different salinity were prepared with 99.99% NaCl, 99.99% CaCl2, and deionized water (DW). Glacial acetic acid with a purity of more than 99.5% was used to prepare acidic water with different pH. The detailed experiment conditions are listed in Table 1. The calcite...
At 1123 K, the Fe content reaches a peak value of 4.4 mass pct in 1 hour, indicating a complete reaction between solid FePO4 and molten CaCl2. The P content also reaches a peak of 2.1 mass pct in 1 hour, exceeding the solubility of P in molten CaCl2. This can be attributed to ...
aqueous HCl; the process being repeated three times. The ultimate product, i.e., poly[1-hydroxyl-(2,6-phenylene-methylene)], was subsequently dissolved in 100 mls acetone and dried over anhydrous MgSO4; vacuumed stripped 24 hours later; and stored in a dedicator containing CaCl2 until ...
The Sericinjam cocoon could be dissolved in water at high temperature (120掳C) and high pressure (HTHP method) in an autoclave and in a CaCl2/H2O/EtOH mixture (ternary solvent method), resulting in 82% and 97% dissolution after 30 min, respectively. The solution viscosity...
In the CaCl2 water at the greater depth, pore water is under-saturated with respect to calcite, resulting in dissolution of calcite cements, as consistent with microscopic dissolution features of the samples from this depth interval. Calcite dissolution results in formation of high secondary porosity...