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化工学报  2015 

Ti-MCM-41负载酞菁铁光催化氧化脱硫

DOI: 10.11949/j.issn.0438-1157.20150863, PP. 3437-3443

Keywords: 光催化氧化,二苯并噻吩,酞菁铁,Ti-MCM-41

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Abstract:

合成了钛硅分子筛Ti-MCM-41,通过对Ti-MCM-41改性以共价键将带有不同取代基的酞菁铁负载于Ti-MCM-41上制备出Ti-MCM-41负载酞菁铁催化剂,并利用红外光谱、X射线衍射、扫描电镜以及BET氮气吸附-脱附等温线以及紫外-可见吸收光谱对合成的催化剂进行表征。在常温常压下,以Ti-MCM-41负载酞菁铁为光催化剂,空气为氧化剂,己内酰胺四丁基溴化铵离子液体为萃取剂,可见光下催化氧化二苯并噻吩(DBT),采用单一变量法探索该体系的最佳反应条件。结果表明,Ti-MCM-41负载氨基酞菁铁具有较好的光催化活性,且在最佳工艺条件下,DBT的脱除率最高可达95.6%。催化剂重复使用5次后,催化活性没有明显下降。

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