Suitable carbonates include, but are not limited to, carbonates of alkali metals and alkaline earth metals, preferably carbonates of calcium and magnesium. Waste products are metal cations and bicarbonate in so
Due to their strong pozzolanic activity, nano-silica will react with CH released during the hydrating of C3S to produce more C-S-H. Ternary concrete blends shows greater compressive strengths than conventional concrete because the presence of hydration products in large quantities causes cement ...
Alkali halite melt is one of the methods, and is discussed in US Patent No. 4475993 (1984). In this method, the CFA is reacted with aluminium trichloride to form a soluble compound of trace metals in the melt. Gallium was recovered from the melt by elec- trolysis. However, this ...
Alkali Feldspar 1.4 0.9 Augite 3.3 3.0 3.6 Diopside 2.0 2.2 Pigeonite 2.8 2.3 Olivine 2.3 4.2 1.8 Magnetite 3.3 0.1 0.2 0.2 0.6 0.2 Ilmenite 0.9 Hematite 0.6 0.5 0.4 0.6 Goethite 1.5 Anatase 1.0 0.6 Pseudobrookite 1.0 Gibbsite 1.0 Mixed illite/smectite 15.0 12.2 Kaolinite 2.6...
Besides the alkali metals, other metals such as Cu, Zn, Ni, Zr, Mn, and Pt can also be used to modify Fe-based catalysts83. For example, bimetallic Fe–Cu/Al2O3 catalysts can suppress CH4 formation and thus exhibit higher amounts of C2–C7 production compared with pure Fe/Al2O3 ...
The central contributing factors are reactive oxygen species, such as singlet oxygen, hydrogen peroxide, and hydroxyl radicals; light and photosensitizers; metals; and heat. In a multi-component mixture, tryptophan also commonly reacts with carbonyl-containing compounds, leading to a wide variety of ...
cycloalkyl or dicycloalkyl amine compounds having the general formula ##STR3## and cyclic amine compounds having the general formula ##STR4## where R1and R2are as defined hereinabove. The method also includes mixing the above reaction product with an organic alkali metal compound; and optionall...
The reactants thus include an alkali metal silicate and a mineral acid, such as sulfuric acid or an acidulating agent such as CO2. When the acidification agent is added to the alkali metal silicate at a certain point during the process, the silica starts precipitating. The addition of the...
Upon contact with the free water of the starting waste, hydration of the slag takes place due to the sulfate ion-containing activators and to the presence of small quantities of alkali metal ions, whereby the structure of the slag particles is opened. Physical study of the resultant products ...
After completion of the reaction the chlorine and hydrogen chloride still present in the solution can be removed either by heating and passing air through the solution or by treatment with water vapour or dilute alkali. The reaction can be carried out otherwise than at atmospheric pressure. I...