Effective decay of ozone harming substance SF6 by means of weighty metal strong waste de-rived impetus

Sulfur hexafluoride (SF6) is an obstinate ozone harming substance. Cata-lytic disintegration of SF6 was only here and there detailed. In this work, we integrated novel multi-metal containing impetuses from hefty metal strong squanders, and applied them in green cata-lytic disintegration of SF6 interestingly. Accordingly, the waste-determined impetuses, which predominantly contained Cr, Cu and Fe oxides, astoundingly eliminated SF6 at a limit of 1.10 mmol/g at 600oC. This dynamic temperature was 100-200oC lower than that of phosphate impetus, yet much lower than 5000 K by electri-cal circular segment detailed somewhere else. XRD examination showed that the strong stage changed from metal oxides (for example Fe2O3) to fluorides (for example FeF3) with the utilization of SiO2. Simultaneously, on-line FTIR investigation recognized that the developed gases were SO2 and SiF4, with no poisonous SOF4, SO2F2 and SF4 being identified. These created gases were promptly caught by antacid solu-tion. As per the above outcomes, the response somewhere in the range of SF6 and SiO2 was catalyzed by CrCuFe oxides in strong waste inferred material, bringing about the green decrease of SF6. Moreover, tempered steel slag (SSS), another sort of multi-metal contain-ing strong waste, likewise deteriorated SF6 viably at 600oC. By correlation, CaFeMgMn oxides in SSS catalyzed the response somewhere in the range of SF6 and SiO2. In this way, our works displayed that hefty metal strong waste was a sort of likely asset for the union of high-esteem added impetus.

Author(s): Guangren Qian

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