Characterization and activity of Fe-ZSM-5 catalysts for the total oxidation of phenol in aqueous solutions

被引：83

作者：

Phu, NH ^{[1
]}

Hoa, TTK ^{[1
]}

Van Tan, N ^{[1
]}

Thang, HV ^{[1
]}

Le Ha, P ^{[1
]}

机构：

[1] Natl Ctr Sci & Technol Viet Nam, Inst Chem, Dept Catalysis & Surface, Hanoi, Vietnam

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2001年 / 34卷 / 04期

关键词：

phenol; catalytic oxidation; Fe-ZSM-5; hydrogen peroxide; framework Fe;

D O I：

10.1016/S0926-3373(01)00220-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fe-ZSM-5 zeolites with of Si/Fe ratios varying from 40 to 200 were synthesized and characterized by IR, XRD, SEM, ESR and ion-exchange techniques. From the obtained results, it is possible to conclude that, these zeolites have a good crystallinity and that the incorporation of Fe3+ ions into the MFI-structure depends on the Si/Fe ratios in the gel: the higher the Si/Fe ratio, the more the percentage of Fe3+ ions is incorporated into the MFI lattice. Catalytic properties of Fe-ZSM-5 were studied in the oxidation of phenol. The reaction was performed in a static system, at the atmospheric pressure, 343 K, and with H2O2 concentration, which exceeds stoichiometric concentration for complete oxidation of phenol to carbon dioxide and water. From the catalytic results, it can be concluded that framework Fe can catalyze more completely phenol oxidation than the extra-framework Fe does. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：267 / 275

页数：9

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