Oxidation of CO and hydrocarbons with molecular oxygen over Fe-ZSM-5 zeolite

被引：19

作者：

Starokon, E. V. ^{[1
]}

Vedyagin, A. A. ^{[1
]}

Pirutko, L. V. ^{[1
]}

Mishakov, I. V. ^{[1
,2
]}

机构：

[1] Boreskov Inst Catalysis SB RAS, Novosibirsk 630090, Russia

[2] Novosibirsk State Tech Univ, Novosibirsk 630073, Russia

来源：

JOURNAL OF POROUS MATERIALS | 2015年 / 22卷 / 02期

关键词：

Fe-ZSM-5; Adsorption; Oxidation; Molecular oxygen; CO; Hydrocarbons; ALPHA-SITES; N2O DECOMPOSITION; FEZSM-5; ZEOLITE; IRON; CATALYSTS; METHANOL; HYDROXYLATION; REDUCTION; FRAMEWORK; EVOLUTION;

D O I：

10.1007/s10934-015-9922-z

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of iron-containing zeolites ZSM-5 with different iron loadings (0.5, 2 and 4 wt%) calcined at 900 A degrees C and characterized by a high crystallinity were studied. The zeolites were tested in reactions of CO, methane, propylene and toluene oxidation by molecular oxygen in vacuum setup, as well as in flow reactor system using a model reaction mixture simulating automobile exhaust gases. Reactivities of components of the model reaction mixture change in the series: C3H6 > CO > C6H5CH3 > CH4. There were two stages of the hydrocarbon oxidation: they were oxidized first to CO and then reoxidized to CO2. Temperatures higher than 350 A degrees C were required for methane oxidation to produce CO and CO2, any other products of methane partial oxidation being not found. High activity of Fe-ZSM-5 catalysts towards propylene and toluene oxidation was found to be determined by zeolite porous structure and capability to adsorb rapidly mentioned hydrocarbons.

引用

页码：521 / 527

页数：7

共 26 条

[1] Activity and durability of Fe/ZSM-5 catalysts for lean burn NOx reduction in the presence of water vapor [J].

Chen, HY ;

Sachtler, WMH .

CATALYSIS TODAY, 1998, 42 (1-2) :73-83

[2] The Acidity of Zeolites: Concepts, Measurements and Relation to Catalysis: A Review on Experimental and Theoretical Methods for the Study of Zeolite Acidity [J].

Derouane, E. G. ;

Vedrine, J. C. ;

Ramos Pinto, R. ;

Borges, P. M. ;

Costa, L. ;

Lemos, M. A. N. D. A. ;

Lemos, F. ;

Ramoa Ribeiro, F. .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2013, 55 (04) :454-515

[3] Role of α-Sites in the Selective Catalytic Reduction of NOx with Ammonia over Fe-ZSM-5 Catalysts [J].

Doronkin, D. E. ;

Piryutko, L. V. ;

Starokon', E. V. ;

Panov, G. I. ;

Stakheev, A. Yu. .

KINETICS AND CATALYSIS, 2012, 53 (06) :747-752

[4] Evolution of iron states and formation of α-sites upon activation of FeZSM-5 zeolites [J].

Dubkov, KA ;

Ovanesyan, NS ;

Shteinman, AA ;

Starokon, EV ;

Panov, GI .

JOURNAL OF CATALYSIS, 2002, 207 (02) :341-352

[5] Iron-containing nanocomposites based on ZSM-5 zeolite [J].

Eliseev, A. A. ;

Vyacheslavov, A. S. ;

Lukashin, A. V. ;

Tretyakov, Yu. D. ;

Suzdalev, I. P. ;

Maximov, Yu. V. ;

Goernert, P. .

INTERNATIONAL JOURNAL OF NANOSCIENCE, VOL 5, NOS 4 AND 5, 2006, 5 (4-5) :459-+

[6] A Mossbauer and structural investigation of Fe-ZSM-5 catalysts: Influence of Fe oxide nanoparticles size on the catalytic behaviour for the NO-SCR by C3H8 [J].

Fierro, Giuseppe ;

Moretti, Giuliano ;

Ferraris, Giovanni ;

Andreozzi, Giovanni B. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 102 (1-2) :215-223

[7] Reactivity of oxygen species formed upon N2O dissociation over Fe-ZSM-5 zeolite: CO oxidation as a model [J].

Guesmi, H. ;

Berthomieu, D. ;

Kiwi-Minsker, L. .

CATALYSIS COMMUNICATIONS, 2010, 11 (12) :1026-1031

[8] A comparative study of "standard", "fast" and "NO2" SCR reactions over Fe/zeolite catalyst [J].

Iwasaki, Masaoki ;

Shinjoh, Hirofumi .

APPLIED CATALYSIS A-GENERAL, 2010, 390 (1-2) :71-77

[9] On the nature of different iron sites and their catalytic role in Fe-ZSM-5 DeNOx catalysts:: new insights by a combined EPR and UV/VIS spectroscopic approach [J].

Kumar, MS ;

Schwidder, M ;

Grünert, W ;

Brückner, A .

JOURNAL OF CATALYSIS, 2004, 227 (02) :384-397

[10]

Li HX, 2005, STUD SURF SCI CATAL, V158, P1375

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