现代化工

现代化工 ›› 2022, Vol. 42 ›› Issue (7) : 219-223. DOI: 10.16606/j.cnki.issn0253-4320.2022.07.041

科研与开发

过渡金属负载Al-SBA-16分子筛催化剂的制备、表征及性能研究

孟杰, 刘经伟, 朱伟, 汪洋, 管国锋

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Preparation,characterization and oxidation performance of transition metal supported Al-SBA-16 catalysts

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Received		Published
2022-01-26		2022-07-20
Issue Date	Revised Date
2022-07-12	2022-01-26

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摘要

以凹凸棒土为原料制备Al-SBA-16分子筛,分别负载Mn和Co制备Mn/Al-SBA-16、Co/Al-SBA-16催化剂,考察其对甲苯、乙酸甲酯、乙醇的催化燃烧性能。结果表明,随着Mn或Co负载量的增加,催化剂的比表面积和孔容逐渐减小。当Mn或Co元素质量分数为8%时,催化剂性能最佳;当甲苯、乙酸甲酯、乙醇质量分数分别为2000、10000、6000 μg/g及空速为20000 h^-1时,8% Mn/Al-SBA-16和8% Co/Al-SBA-16能够分别将甲苯的T₉₀降低至340℃和343℃,将乙酸甲酯的T₉₀降低至313℃和320℃,将乙醇的T₉₀降低至236℃和222℃。

Abstract

A series of Mn/Al-SBA-16 and Co/Al-SBA-16 catalysts are prepared from attapulgite,and used to catalyze the combustion of toluene,methyl acetate and ethanol.It is found that with the increasing content of Mn or Co,both specific surface area and pore volume of the catalyst decrease gradually.The catalyst exhibits the best performance when the loading content of Mn or Co reaches 8 wt.%.As the concentrations of toluene,ethanol and methyl acetate are 2 000,6 000 and 10 000 ppm,and the space velocity is 20 000 h^-1,the T₉₀ of toluene,ethanol and methyl acetate can be reduced to 340℃,236℃ and 313℃,respectively by 8%Mn/Al-SBA-16,which can be reduced to 343℃,222℃ and 320℃,respectively by 8%Co/Al-SBA-16 catalyst.