Catalytic combustion of hydrogen-air mixtures in stagnation flows

Journal Article · Thu Apr 01 00:00:00 EST 1993 · Combustion and Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(93)90088-K· OSTI ID:6445553

Ikeda, H; Libby, P A; Williams, F A ^[1]; Sato, Jun'ichi ^[2]

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1. Univ. of California, San Diego (United States)
2. Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo (Japan)

The interaction between heterogeneous and homogeneous reactions arising when a mixture of hydrogen and air impinges on a platinum plate at elevated temperature is studied. A reasonably complete description of the kinetic mechanism for homogeneous reactions is employed along with a simplified model for heterogeneous reactions. Four regimes are identified depending on the temperature of the plate, on the rate of strain imposed on the flow adjacent to the plate and on the composition and temperature of the reactant stream: (1) surface reaction alone; (2) surface reaction inhibiting homogeneous reaction; (3) homogeneous reaction inhibiting surface reaction; and (4) homogeneous reaction alone. These regimes are related to those found earlier for other chemical systems and form the basis of future experimental investigation of the chemical system considered in the present study.

• OSTI ID: 6445553
• Journal Information: Combustion and Flame; (United States), Vol. 93:1-2; ISSN 0010-2180
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
HYDROGEN
COMBUSTION
AIR
CATALYTIC COMBUSTORS
HETEROGENEOUS CATALYSIS
HOMOGENEOUS CATALYSIS
MATHEMATICAL MODELS
MIXTURES
MOLTEN CARBONATE FUEL CELLS
PLATINUM
STAGNATION POINT
CATALYSIS
CHEMICAL REACTIONS
COMBUSTORS
DIRECT ENERGY CONVERTERS
DISPERSIONS
ELECTROCHEMICAL CELLS
ELEMENTS
FLUIDS
FUEL CELLS
GASES
HIGH-TEMPERATURE FUEL CELLS
METALS
NONMETALS
OXIDATION
PLATINUM METALS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
083000* - Hydrogen- Combustion- (1990-)