Evolution of iron species for promoting the catalytic performance of FeZSM-5 in phenol oxidation
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Luo, Lei
- 合写作者：
- Dai, Chengyi,Zhang, Anfeng,Wang, Junhu,Song, Chunshan,Guo, Xinwen
- 发表时间：
- 2016-01-01
- 发表刊物：
- RSC ADVANCES
- 收录刊物：
- SCIE、EI
- 文献类型：
- J
- 卷号：
- 6
- 期号：
- 39
- 页面范围：
- 32789-32797
- ISSN号：
- 2046-2069
- 摘要：
- Facile modification of FeZSM-5 utilizing an organic directing agent (ODA) for iron species evolution toward better Fenton activity was developed. Pristine FeZSM-5, prepared hydrothermally using tetrapropylammonium bromide as the ODA, was thermally treated in nitrogen or air atmosphere for comparison. The as-prepared FeZSM-5 were evaluated by XRD, SEM, TGA, Ar physical adsorption, H2-TPR, UV-Vis, XPS and Mossbauer spectra, which confirmed well-dispersed iron species and partial transformation of framework iron to non-framework iron and Fe(III) to Fe(II) during thermal treatment in N-2. The phenol oxidation reaction was applied as a probe reaction and phenol conversion can be improved from 44% to 90% within 60 minutes. By thermal treatment in N-2 atmosphere, the ODA plays an important role in modifying non-framework iron species from Fe(III) to Fe(II) ions which is desirable for improving catalytic activity in Fenton-like systems. The strategy utilizing the thermal reduction effect of the ODA on iron species is a reliable method for preparing well-dispersed and valence tunable iron oxide nanoparticles encapsulated in ZSM-5.
- 是否译文：
- 否
