不同工艺条件制备羟基氧化铁脱硫活性研究 -

笔者在FeCl2-NH4OH体系,采用不同碱比(n=1,0.8)、不同通气量(1.25L/min和1.5L/min)和不同氧化方法制备了多个FeOOH样品,对样品进行TEM、XRD、TG表征说明,氧化速率降低易生成低脱硫活性的Fe3O4或γ-FeOOH、α-FeOOH和Fe3O4的混合相,提高空气流量,或添加氧化剂加快氧化速率,可生成脱硫活性较高的FeOOH。 The author made many FeOOH samples adopting different alkaline proportion(n=1,0.8),different aeration capacity(1.25L/min and 1.5L/min)and different oxidation measures under the system of FeCl2-NH4OH.The TEM、XRD and TG token of samples indicated that reducing the oxidation speed can easily produce the mixture of Fe3O4 or γ-FeOOH、α-FeOOH and Fe3O4,which are of lower activation of desulfurzation,and increasing air flux or adding oxidizer to quicken oxidation speed can produce FeOOH with higher activation of desulfurization