Ilmenite‐type (Zn1−xCdx)TiO3 (0≤x≤0.15 and 0.8≤x≤1.0) was synthesized by a modified sol–gel route including the Pechini process via two‐step heat treatments. The thermal stability of (Zn1−xCdx)TiO3 depended on the amount of cadmium content. The as‐synthesized (Zn1−xCdx)TiO3 (0≤x≤0.15 and 0.8≤x≤1.0) showed higher thermal stability than that of ZnTiO3. The variation of the dielectric constant of all synthesized (Zn1−xCdx)TiO3 samples for all measurement frequencies showed a similar tendency. The dielectric constant of each (Zn1−xCdx)TiO3 sample decreased first with increasing frequencies and then increased slightly when the frequency was up to 107 Hz. Moreover, the dielectric loss tangent of all synthesized (Zn1−xCdx)TiO3 samples for all measurement frequencies also changed in similar patterns. The dielectric loss tangent decreased with increasing measurement frequencies. The microwave dielectric properties of (Zn1−xCdx)TiO3 were changed with the cadmium doping content in the range of microwave frequency.
The carbon dioxide produced by desulfurization in the metallurgical industry increases the carbon content in tail gas. However, the product of the decarbonization process can remove sulfur dioxide from tail gas. In this paper, the absorption and crystallization amounts of sodium carbonate solution reacting with carbon dioxide at high temperatures are explored through experiments, and the optimum concentration of sodium carbonate solution for absorbing carbon dioxide is determined. The purity of crystals is verified by analyzing the crystallization quality, absorption amount, and absorption curve.
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