Experimental studies on syngas catalytic combustion on Pt/Al2O3 in a microreactor

被引：36

作者：

Federici, J. A.

Vlachos, D. G. ^{[1
]}

机构：

[1] Univ Delaware, Dept Chem Engn, Newark, DE 19716 USA

来源：

COMBUSTION AND FLAME | 2011年 / 158卷 / 12期

基金：

美国国家科学基金会;

关键词：

Hydrogen; Carbon monoxide; Synthesis gas; Catalytic combustion; Microreactor; Heterogeneous oxidation; WATER-GAS SHIFT; CO OXIDATION; H-2; OXIDATION; PLATINUM; FUEL; MICROBURNERS; MECHANISM; MIXTURES; HYDROGEN;

D O I：

10.1016/j.combustflame.2011.05.003

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Synthesis gas (a mixture of CO and H-2) oxidation is studied over a supported Pt/Al2O3 catalyst in a novel microreactor fabricated for studying the intrinsic chemical kinetics of highly exothermic reactions. CO was found to significantly inhibit H-2 oxidation. In contrast, H-2 addition promotes CO oxidation at low mole fractions but has a small promoting effect at high hydrogen mole fractions. As a result, the apparent reaction order of H-2 changes from positive to zero. The change in hydrogen reaction order is associated with hysteresis. Possible mechanisms for the observed behavior are discussed. (C) 2011 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

收藏

页码：2540 / 2543

页数：4

相关论文

共 22 条

[1] A detailed surface reaction mechanism for CO oxidation on Pt [J].

Aghalayam, P ;

Park, YK ;

Vlachos, DG .

PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2000, 28 (28) :1331-1339

[2] CO oxidation on Pt(111) promoted by coadsorbed H2O [J].

Bergeld, J ;

Kasemo, B ;

Chakarov, DV .

SURFACE SCIENCE, 2001, 495 (03) :L815-L820

[3] OXIDATION OF HYDROGEN AND CARBON-MONOXIDE MIXTURES OVER PLATINUM [J].

DABILL, DW ;

GENTRY, SJ ;

HOLLAND, HB ;

JONES, A .

JOURNAL OF CATALYSIS, 1978, 53 (01) :164-167

[4] Single channel and heat recirculation catalytic microburners: An experimental and computational fluid dynamics study [J].

Federici, J. A. ;

Wetzel, E. D. ;

Geil, B. R. ;

Vlachos, D. G. .

PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2009, 32 :3011-3018

[5] Advanced zero emissions gas turbine power plant [J].

Griffin, T ;

Sundkvist, SG ;

Åsen, K ;

Bruun, T .

JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 2005, 127 (01) :81-85

[6] PREPARATION AND CHARACTERIZATION OF HEXAALUMINATE-BASED MATERIALS FOR CATALYTIC COMBUSTION [J].

GROPPI, G ;

BELLOTTO, M ;

CRISTIANI, C ;

FORZATTI, P ;

VILLA, PL .

APPLIED CATALYSIS A-GENERAL, 1993, 104 (02) :101-108

[7] Catalytic combustion of CO-H-2 on manganese-substituted hexaaluminates [J].

Groppi, G ;

Belloli, A ;

Tronconi, E ;

Forzatti, P .

CATALYSIS TODAY, 1996, 29 (1-4) :403-407

[8] Modeling the simultaneous oxidation of CO and H2 on Pt - Promoting effect of H2 on the CO-light-off [J].

Hauptmann, W. ;

Votsmeier, M. ;

Vogel, H. ;

Vlachos, D. G. .

APPLIED CATALYSIS A-GENERAL, 2011, 397 (1-2) :174-182

[9] SYNTHESIS OF HIGHLY CALORIFIC GASEOUS FUEL FROM SYNGAS ON COBALT MANGANESE RUTHENIUM COMPOSITE CATALYSTS [J].

INUI, T ;

SAKAMOTO, A ;

TAKEGUCHI, T ;

ISHIGAKI, Y .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1989, 28 (04) :427-431

[10] Kinetics of the selective CO oxidation in H-2-rich gas on Pt/Al2O3 [J].

Kahlich, MJ ;

Gasteiger, HA ;

Behm, RJ .

JOURNAL OF CATALYSIS, 1997, 171 (01) :93-105