Efficient Synthesis of Monomeric Fe Species in Zeolite ZSM-5 for the Low-Temperature Oxidation of Methane

被引：21

作者：

Yu, Tao ^{[1
,2
]}

Su, Yang ^{[1
]}

Wang, Aiqin ^{[1
,3
]}

Weckhuysen, Bert M. ^{[4
]}

Luo, Wenhao ^{[1
]}

机构：

[1] Chinese Acad Sci, CAS Key Lab Sci & Technol Appl Catalysis, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[4] Univ Utrecht, Inorgan Chem & Catalysis Grp, Debye Inst Nanomat Sci, Univ Weg 99, NL-3584 CG Utrecht, Netherlands

来源：

CHEMCATCHEM | 2021年 / 13卷 / 12期

关键词：

catalyst preparation; characterization; iron; methane oxidation; zeolites;

D O I：

10.1002/cctc.202100299

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：

Direct oxidation of methane into value-added C1 oxygenated products, such as methanol, is essential and remains a significant challenge in the field of catalysis. In this work, we have prepared Fe/ZSM-5 materials via three different methods and investigated the influence of various preparation methods on the composition and catalytic performance of Fe/ZSM-5 for the low-temperature oxidation of methane. Through a combination of scanning transmission electron microscopy, ultraviolet-visible diffuse reflectance and Fe-57 Mossbauer spectroscopy, we have found that the highest proportion of monomeric Fe species of 71 % could be achieved in the ZSM-5 zeolite by the solid-state ion-exchange method, affording an excellent C1 oxygenates yield of 120 mol/mol(Fe) with a C1 oxygenates selectivity of 96 % at 50 degrees C for 30 min in the aqueous solution of H2O2.

引用

页码：2766 / 2770

页数：5

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