Cu-Cr-O spinel

The spinel-type catalyst is a complex oxide that has attracted attention owing to its wide applications as a catalyst [18-19]. The basic state of Cu-Fe-O and Cu-Cr-O spinels is prepared by the coprecipitation method and is measured in air by the DTA-EGD coupled technique [20] (Figures 5.7 and 5.8). 

Figure 5.8 DTA-EGD curves for Cu-Cr-O spinel in the basic state [20]. Sample mass, 6.37 mg. Measuring conditions as for Figure 5.7...

Figure 5.9 DTA-EGD curves for Cu-Cr-O spinel in the basic statel201. The sample was prepared by the complexing method using citric acid. Sample mass, 2.18 mg reference material empty crucible. Measuring conditions as in Figure 5.7, Three exotherms at 157,260 and 305 C thermal decomposition and oxidation. Owing to the decomposition reaction of nitrate and citric acid, CuO and Cr,0- are formed...

Grayish-colored coatings based on Cu-Mn-Cu-Cr-O spinel were prepared by sol-gel process. This multi-component double layer colored coating is useful for shielding ultraviolet as well as infrared rays, and maintaining the privacy of inner room. 

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