MgAlFeCu mixed oxides for SO₂ removal capacity: Influence of the copper and aluminum incorporation method

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• 作者：Wen Ping Cheng^a ; ^b ; Jian Zhong Zhao^a ; Jian Guo Yang^b ; ^{jgyang@chem.ecnu.edu.cn}
• 关键词：MgAlFeCu mixed oxides ; Hydrotalcite-like compounds ; Sulfur transfer catalyst ; The NaAlO2-coprecipitation method
• 刊名：Catalysis Communications
• 出版年：2012
• 期刊代码：12_15667367
• 类别：ce
• 出版时间：5 June, 2012
• 卷：23
• 期：Complete
• 页码：1-4
• 文件大小：610 K

摘要

MgAlFeCu mixed oxides derived from hydrotalcite-like compounds (Mg:Al = 5:1) in which Mg and Al were partially replaced by 1%(wt) Cu and 8%(wt) Fe. The mixed oxides were prepared by the impregnation method, the coprecipitation method and the novel NaAlO₂-coprecipitation method, respectively. These additives were evaluated by SO₂ removal under the conditions similar to those of FCC units. The results of SO₂ adsorption-reduction test showed that MgAlFeCu-2 by the novel NaAlO₂-coprecipitation method exhibited better adsorption capacities and reduction ability than other catalysts, its total amount of adsorbed SO₂ reached 1.69 g SO₂/g Cat, which also remained constant after 8 cycles.