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We report the behavior of Mg vapor and CO by dynamic simulation and an experimental study under vacuum. The results of the density functional theory indicated that the interaction of a single CO molecule with the Mg(100) surface was only physical adsorption. During the interaction of two CO molecules with the Mg(100) surface, a strong C-C bond was formed between C1 and C2, and C1-O1 and C2-O2 were...
A new method was studied for extracting manganese from low-grade pyrolusite with H2SO4 roasting and subsequent water leaching. The mechanism of roasting and optimal conditions for roasting, including the amounts of H2SO4 and H2O addition and the roasting temperature and time, were discussed. The results indicated that the pyrolusite roasting process in the temperature range of 400–600°C was controlled...
The behavior of silica was investigated experimentally in an alumina carbothermic reduction process and chlorination process in vacuum. The results showed that, first, SiC was produced by SiO2 and C, and then Al4SiC4 was produced by Al4C3, Al4O4C, C, and SiC during the alumina carbothermic reduction process at about 1,763 K. C, Al3C4 and Al4O4C decreased and Al4SiC4 increased as content of SiO2 increased...
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