Interaction of N2, CO and NO with Cu-exchanged ETS-10:: a compared FTIR study with other Cu-zeolites and with dispersed Cu2O

被引：85

作者：

Bordiga, S ^{[1
]}

Pazé, C ^{[1
]}

Berlier, G ^{[1
]}

Scarano, D ^{[1
]}

Spoto, G ^{[1
]}

Zecchina, A ^{[1
]}

Lamberti, C ^{[1
]}

机构：

[1] Univ Turin, Dipartimento Chim, IFM, Unita INFM, I-10125 Turin, Italy

来源：

CATALYSIS TODAY | 2001年 / 70卷 / 1-3期

关键词：

titanosilicate; ETS-10; FTIR spectroscopy; CO; N-2; NO; Cu-exchanged zeolites; NO decomposition;

D O I：

10.1016/S0920-5861(01)00410-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

After a brief overview of the reasons why, in spite of the high fraction of framework Ti(IV) atoms, Engelhard titanosilicate (ETS-10) cannot be used as competitive catalyst in partial oxidation reactions, we draw the attention on the fact that the high cation density of ETS-10 can be the key property for potential new catalytic applications of this recent material. Among all, cation exchange with Cu2+ can yield to Cu-ETS-10, a promising material for environmental catalysis. We so present a detailed characterization of this material using N-2. CO and NO as probe molecules. In spite of the rather high complexity of the obtained spectra, a comparison with similar experiments (described in the literature or ad hoc performed for this work) on other Cu-exchanged zeolites and on Cu2O dispersed on silica and on MCM-41, allows a full interpretation of the spectroscopic properties. It is shown that copper is present both as counterion and in the form of Cu2O nanoclusters dispersed in the ETS-10 channels and in the external surface. Finally, IR spectroscopy has been used to demonstrate that Cu-ETS-10 is active in the decomposition of NO. (C) 2001 Published by Elsevier Science B.V.

引用

页码：91 / 105

页数：15

共 64 条

[61] Surface structures of oxides and halides and their relationships to catalytic properties [J].