Synthesis and activity of FeAPO-5 molecular sieve for catalytic oxidation of phenol in aqueous solution

KONG Liming; YANG Senlin; LIU Xiaoqin

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Synthesis and activity of FeAPO-5 molecular sieve for catalytic oxidation of phenol in aqueous solution

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- Synthesis and activity of FeAPO-5 molecular sieve for catalytic oxidation of phenol in aqueous solution
- CIESC Journal Issue 2, Pages: 348-353(2008)
- 作者机构：
  
  南京工业大学材料化学工程国家重点实验室，扬州大学化学化工学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 February 2008，
  
  Published：05 February 2008
- 稿件说明：
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KONG Liming, YANG Senlin, LIU Xiaoqin. Synthesis and activity of FeAPO-5 molecular sieve for catalytic oxidation of phenol in aqueous solution[J]. CIESC Journal, 2008, (2): 348-353.
DOI：

KONG Liming, YANG Senlin, LIU Xiaoqin. Synthesis and activity of FeAPO-5 molecular sieve for catalytic oxidation of phenol in aqueous solution[J]. CIESC Journal, 2008, (2): 348-353. DOI：

摘要

以水热晶化法合成了铁磷铝分子筛FeAPO-5，并用XRD、SEM、FT-IR和 UV-vis等对分子筛样品进行了表征。结果表明，所合成的FeAPO-5分子筛样品结晶度高，晶粒大小均匀，FeAPO-5样品中存在骨架Fe和骨架外Fe物种，并以骨架Fe物种为主。FeAPO-5作为一种非均相催化剂能有效催化氧化水溶液中苯酚，在苯酚初始浓度200 mg8226;L-1 、H2O2初始含量1200 mg8226;L-1、pH 5.0及溶液温度80℃的条件下，处理240 min后苯酚去除率达99.0％，TOC去除率可达77.8％。ICP分析结果表明，催化剂上析出到溶液中的铁离子浓度很低，催化剂性能稳定。

Abstract

Iron-substituted aluminophosphate molecular sieves (FeAPO-5) were synthesized by hydrothermal crystallization and characterized with XRD

SEM

FT-IR and UV-Vis techniques.The results showed that the synthesized samples had good crystallinity and uniform grain.From the obtained characterization results

it could be concluded that both the framework and extra-framework Fe species were together present in the FeAPO-5 samples

and most iron ion was incorporated into the AlPO4-5 framework.FeAPO-5 as a heterogeneous catalyst is effective for catalytic oxidation of phenol in aqueous solutions with H2O2 as oxidant.The best results (99.0% phenol conversion

77.8% total organic carbon) after 240 min at 80℃ were obtained with phenol initial concentration 200 mg·L-1

H2O2 initial concentration 1200 mg·L-1 and pH5.0. Meanwhile

inductively coupled plasma (ICP) spectrometry results indicated that the concentration of leaching-off Fe3+ in the solution was very little and the FeAPO-5 molecular sieves was stable in the process of catalytic oxidation of phenol in aqueous solutions.

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