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合成了不同比例的硫酸根/氧化铁-氧化锆催化剂,并研究了它们催化降解罗丹明B的性能。考察了不同条件下合成的催化剂对罗丹明B的影响。实验表明:当反应温度为40℃,10 mg硫酸根/氧化铁-氧化锆作催化剂和0.91 mol/L H2O2作氧化剂催化降解100 mL 20 mg/L的罗丹明B溶液,在n(Fe)∶n(Zr)=1∶1,浸泡所用硫酸的浓度分别为0.5 mol/L和1.5 mol/L,煅烧温度为600℃等条件下合成的催化剂的活性最高,对罗丹明B的催化降解速率最大。在将该催化剂连续催化降解14h,此过程重复循环反应3次,罗丹明B的降解率都能够达到90%。该催化剂在染料降解方面具有较大的应用前景和研究价值。
Different ratios of sulfate / iron oxide-zirconia catalysts were synthesized and their catalytic properties for the degradation of rhodamine B were investigated. The effects of the catalysts synthesized under different conditions on rhodamine B were investigated. The experimental results showed that 100 mL 20 mg / L rhodamine B solution was degraded with n (Fe): 1 at a reaction temperature of 40 ℃ and 10 mg sulfate / iron oxide - zirconia as catalyst and 0.91 mol / L H2O2 as oxidant. n (Zr) = 1: 1, the concentration of sulfuric acid used for soaking is 0.5 mol / L and 1.5 mol / L respectively, the calcination temperature is 600 ℃, the activity of the synthesized catalyst is the highest, and the catalytic degradation rate of rhodamine B is the largest . The catalytic degradation of the catalyst for 14h, the process repeated three times the cycle reaction, the degradation rate of rhodamine B can reach 90%. The catalyst has great application prospect and research value in dye degradation.