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›› 2009, Vol. 9 ›› Issue (2): 408-412.

• 材料工程专栏 • 上一篇    下一篇

铁取代介孔磷铝分子筛的合成、表征及其催化性能

李新柱 杨树林 任海伦   

  1. 南京理工大学化工学院 南京理工大学化工学院 中国石油吉林石化分公司研究院
  • 收稿日期:2008-11-28 修回日期:2009-02-04 出版日期:2009-04-20 发布日期:2009-04-20
  • 通讯作者: 李新柱

Synthesis, Characterization and Catalytic Performance of Trivalent Fe-substituted Mesoporous Aluminophosphate Molecular Sieves

LI Xin-zhu REN Hai-lun YANG Shu-lin   

  1. The Institute of Chemistry & Technology, Nanjing University of Science & Technology The Institute of Chemistry & Technology, Nanjing University of Science & Technology Research institute of Jilin petrochemical company Ltd., petrolchina
  • Received:2008-11-28 Revised:2009-02-04 Online:2009-04-20 Published:2009-04-20
  • Contact: LI Xin-zhu

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被引次数

8

摘要： 以水热晶化法合成了Fe取代介孔磷铝分子筛，并用XRD, FT-IR, N2吸附等对其进行了表征. 结果表明，合成的分子筛为缺乏长程有序的介孔结构，具有较高的比表面积. 在焙烧后的分子筛中，Fe3+离子主要以四配位的形式存在于骨架中. 该分子筛能有效催化氧化水溶液中苯酚，在反应温度60℃、苯酚起始浓度3 mmol/L、加入45 mmol/L H2O2、溶液起始pH值4.5的条件下，4 h后苯酚去除率达99.5%，COD去除率达87.9%，且催化剂性能稳定，反应过程中有极少量Fe3+离子流失.

关键词: 介孔磷铝分子筛, Fe, 苯酚, 催化氧化

Abstract: Fe-substituted aluminophosphate molecular sieves were prepared by hydrothermal crystallization and characterized with XRD, FT-IR, N2 adsorption, etc. The results showed that the samples were the typical mesoporous molecular sieves that were short of the long-range ordered crystal structure and had large surface area, which suggested that Fe3+ ion was successfully incorporated into the framework of molecular sieves and mainly existed in tetrahedral coordination after calcination. Fe-substituted aluminophosphate molecular sieves were effective for catalytic oxidation of phenol in aqueous solution with H2O2 as oxidant. Under the conditions of reaction temperature 60℃, reaction time 4 h, phenol initial concentration 3 mmol/L, H2O2 initial concentration 45 mmol/L and pH 4.5, the removal rates of phenol and COD reached 99.5% and 87.9%, respectively. Their catalytic performance was stable and the concentration of Fe3+ leaching-off was little in catalytic oxidation of phenol in aqueous solution.

Key words: mesoporous aluminophosphate molecular sieve, iron, phenol, catalytic oxidation

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