Use of overtones and combination modes for the identification of surface NOx anionic species by IR spectroscopy

被引：72

作者：

Hadjiivanov, K ^{[1
]}

机构：

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

来源：

CATALYSIS LETTERS | 2000年 / 68卷 / 3-4期

关键词：

co-adsorption; FTIR spectroscopy; Fe-ZSM-5; nitrates; nitrogen monoxide; combination modes; overtones; ZrO2;

D O I：

10.1023/A:1019087521084

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：

Adsorption of NO on ZrO2 produces a series of compounds, among them N2O which is characterized by a band at 1232 cm(-1) and the respective overtone (12 times less intense) at 2466 cm(-1). Co-adsorption of NO and O-2 results in the formation of different surface nitrates. Bridging nitrates are characterized by a set of bands at 1640, 1220 and 1004 cm(-1) and manifest a combination mode at 2612 cm(-1). Bidentate nitrates (1588-1568, 1240 and 1042 cm(-1)) show a combination mode at 2580 cm(-1), which for monodentate nitrates (1515, 1295 and 1019 cm(-1)) is found at 2522 cm(-1). In all these cases the combination mode is by about two orders of magnitude less intense than the fundamental band in the 1650-1500 cm(-1) region. The use of overtones and combination modes is proposed to help the assignments of the NOx bands. It is demonstrated that bands in the 1650-1550 cm(-1) region, produced after NO + O-2 co-adsorption on Fe-ZSM-5, are due to nitrate species.

引用

页码：157 / 161

页数：5

共 37 条

[1] Mechanistic cause of hydrocarbon specificity over Cu/ZSM-5 and Co/ZSM-5 catalysts in the selective catalytic reduction of NOx
Adelman, BJ
Beutel, T
Lei, GD
Sachtler, WMH
[J]. JOURNAL OF CATALYSIS, 1996, 158 (01) : 327 - 335
[2] Aylor AW, 1996, STUD SURF SCI CATAL, V101, P661
[3] NO adsorption, desorption, and reduction by CH4 over Mn-ZSM-5
Aylor, AW
Lobree, LJ
Reimer, JA
Bell, AT
[J]. JOURNAL OF CATALYSIS, 1997, 170 (02) : 390 - 401
[4] IN-SITU HIGH-TEMPERATURE FTIR STUDIES OF NOX REDUCTION WITH PROPYLENE OVER CU/ZSM-5 CATALYSTS
BELL, VA
FEELEY, JS
DEEBA, M
FARRAUTO, RJ
[J]. CATALYSIS LETTERS, 1994, 29 (1-2) : 15 - 26
[5] POTENTIAL REACTION INTERMEDIATES OF NOX REDUCTION WITH PROPANE OVER CU/ZSM-5
BEUTEL, T
ADELMAN, BJ
LEI, GD
SACHTLER, WMH
[J]. CATALYSIS LETTERS, 1995, 32 (1-2) : 83 - 92
[6] Role and importance of oxidized nitrogen oxide adspecies on the mechanism and dynamics of reaction over copper-based catalysts
Centi, G
Perathoner, S
[J]. CATALYSIS TODAY, 1996, 29 (1-4) : 117 - 122
[7] Reduction of NOx over Fe/ZSM-5 catalysts:: Adsorption complexes and their reactivity toward hydrocarbons
Chen, HY
Voskoboinikov, T
Sachtler, WMH
[J]. JOURNAL OF CATALYSIS, 1998, 180 (02) : 171 - 183
[8] Interaction between nitric oxide and copper on copper zirconia sulfated catalysts
Delahay, G
Coq, B
Ensuque, E
Figueras, F
Saussey, J
Poignant, F
[J]. LANGMUIR, 1997, 13 (21) : 5588 - 5592
[9] IR spectroscopic study of NOx adsorption and NOx-O-2 coadsorption on Co2+/SiO2 catalysts
Djonev, B
Tsyntsarski, B
Klissurski, D
Hadjiivanov, K
[J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (22): : 4055 - 4063
[10] An FTIR study an the mechanism of the reaction between nitrogen dioxide and propene over acidic mordenites
Gerlach, T
Schütze, FW
Baerns, M
[J]. JOURNAL OF CATALYSIS, 1999, 185 (01) : 131 - 137

← 1 2 3 4 →