FTIR characterization of Fe3+-OH groups in Fe-H-BEA zeolite:: Interaction with CO and NO

被引：62

作者：

Kefirov, Radoslav ^{[1
]}

Ivanova, Elena ^{[1
]}

Hadjiivanov, Konstantin ^{[1
]}

Dzwigaj, Stanislaw ^{[2
]}

Che, Michel ^{[2
,3
]}

机构：

[1] Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, Bulgaria

[2] Univ Paris 06, CNRS, UMR 7609, Lab Reactivite Surface, F-75252 Paris 05, France

[3] Inst Univ France, Paris, France

来源：

CATALYSIS LETTERS | 2008年 / 125卷 / 3-4期

关键词：

adsorption; BEA zeolite; CO; FTIR spectroscopy; NO; iron;

D O I：

10.1007/s10562-008-9577-3

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：

Fe3+-OH groups of a Fe-H-BEA sample prepared by conventional ion-exchange method are characterized by an IR band at 3686-3684 cm(-1). They exhibit a weak acidity: upon low-temperature CO adsorption the O-H stretching modes are blue shifted by 100 cm(-1) and the respective carbonyl adducts are observed at 2158 cm(-1). The Fe3+-OH groups are reduced at room temperature by NO to form Fe2+-NO species and NO+ groups in cationic positions. Desorption of pre-adsorbed NO at temperatures above 373 K regenerates the Fe3+-OH groups. The relation of the Fe3+-OH species to the so-called alpha-oxygen is discussed.

引用

页码：209 / 214

页数：6

共 37 条

[1] INFRARED SPECTROSCOPIC INVESTIGATIONS OF ZEOLITES AND ADSORBED MOLECULES .2. ADSORBED CARBON MONOXIDE [J].

ANGELL, CL ;

SCHAFFER, PC .

JOURNAL OF PHYSICAL CHEMISTRY, 1966, 70 (05) :1413-&

[2] ADDUCT FORMATION AND FURTHER REACTIVITY OF IRON CARBONYL-COMPLEXES INTRODUCED INTO A ZEOLITE MATRIX [J].

BALLIVETTKATCHENKO, D ;

COUDURIER, G .

INORGANIC CHEMISTRY, 1979, 18 (03) :558-564

[3]

BIANCHI D, 1981, B SOC CHIM FRANCE 1, V9, P345

[4] Analysis of Fe species in zeolites by UV-VIS-NIR, IR spectra and voltammetry.: Effect of preparation, Fe loading and zeolite type [J].

Capek, L ;

Kreibich, V ;

Dedecek, J ;

Grygar, T ;

Wichterlová, B ;

Sobalík, Z ;

Martens, JA ;

Brosius, R ;

Tokarová, V .

MICROPOROUS AND MESOPOROUS MATERIALS, 2005, 80 (1-3) :279-289

[5] On the involvement of radical oxygen species O- in catalytic oxidation of benzene to phenol by nitrous oxide [J].

Chernyavsky, Valery S. ;

Pirutko, Larisa V. ;

Uriarte, Anthony K. ;

Kharitonov, Alexander S. ;

Panov, Gennady I. .

JOURNAL OF CATALYSIS, 2007, 245 (02) :466-469

[6]

Coq B., 2000, APPL CATAL B-ENVIRON, V27, P173

[7]

DAVYDOV A, 1995, IAN SSSR KH, P1946

[8] Incorporation of vanadium species in a dealuminated β zeolite [J].

Dzwigaj, S ;

Peltre, MJ ;

Massiani, P ;

Davidson, A ;

Che, M ;

Sen, T ;

Sivasanker, S .

CHEMICAL COMMUNICATIONS, 1998, (01) :87-88

[9] Role of silanol groups in the incorporation of V in β zeolite [J].

Dzwigaj, S ;

Massiani, P ;

Davidson, A ;

Che, M .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2000, 155 (1-2) :169-182

[10] Effect of preparation and metal content on the introduction of Fe in BEA zeolite, studied by DR UV-vis, EPR and Mossbauer spectroscopy [J].

Dzwlgaj, Stanislaw ;

Stievano, Lorenzo ;

Wagner, Friedrich E. ;

Che, Michel .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2007, 68 (10) :1885-1891

← 1 2 3 4 →