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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：Scopus、SCIE、EI、CPCI-S

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.