Hollow zeolite-encapsulated Fe-Cu bimetallic catalysts for phenol degradation
发布时间：2019-03-11
点击次数：
- 论文类型：
- 期刊论文
- 发表时间：
- 2017-11-15
- 发表刊物：
- 2nd International Symposium on Catalytic Science and Technology in Sustainable Energy and Environment (EECAT)
- 收录刊物：
- CPCI-S、EI、SCIE、Scopus
- 文献类型：
- J
- 卷号：
- 297
- 期号：
- ,SI
- 页面范围：
- 335-343
- ISSN号：
- 0920-5861
- 关键字：
- Hollow zeolite; Phenol degradation; Fe Cu bimetal; Encapsulate
- 摘要：
- Highly dispersed Fe-Cu bimetallic oxide nanoparticles were successfully encapsulated in hollow Silicalite-1 single crystals (Fe2O3CuO@ Hol S-1) by tetrapropylammonium hydroxide (TPAOH) hydrothermal treatment with an "impregnation-dissolution-recrystallization" process. Due to the Fe-Cu bimetallic interaction compared with single iron oxide, Fe-Cu bimetallic oxide exhibits a higher dispersion with the particle size decreasing from similar to 11.3 nm to similar to 3.7 nm. For aqueous phenol degradation, the Fe2O3CuO@ Hol-S-1 catalyst exhibits high activity attributed to the enhanced transport of reactants/products in the short microporous channels (20 nm) and the small metal oxide particle size. Interestingly, the particle size of encapsulated Fe2O3-CuO (3.7 nm) is larger than that of zeolite micropore (0.53 nm), which helps preventing the leaching of metal oxide that is a significant problem for conventional supported Fe catalyst in this reaction. (C) 2017 Elsevier B.V. All rights reserved.
- 第一作者
- Dai, Cheng
- 合写作者
- Wang, Junhu,Guo, Xinwen,Song, Chunshan,Luo, Lei,Zhang, Xinbao,Liu, Min,Zhang, Anfeng