Numerical study of the inhibition of premixed and diffusion flames by iron pentacarbonyl11Official contribution of the National Institute of Standards and Technology; not subject to copyright in the United States.

Rumminger, M D.; Reinelt, D; Babushok, Valeri I.; Linteris, Gregory T.

doi:10.1016/s0010-2180(98)00033-9

Cited by 124 publications

(76 citation statements)

References 26 publications

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“…Examples include the early studies of Westbrook [49,50,51] as well as a number of more recent works. [52,53,54,55] Very recently, inhibited flames studies have been extended to laminar opposed flow diffusion flames. [55,56,57,58,59] Despite the large number of detailed kinetic modeling studies dealing with inhibition and extinction of flames by various agents, we have identified only one study which systematically considered the effects of inert thermal agents on a combustion system.…”

Section: Screening Of Thermophysical Properties Databases For Supmentioning

confidence: 99%

Characterization and identification of super-effective thermal fire extinguishing agents :

Pitts¹,

Yang²,

Bryant³

et al. 2006

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Section: Screening Of Thermophysical Properties Databases For Supmentioning

confidence: 99%

Characterization and identification of super-effective thermal fire extinguishing agents :

Pitts¹,

Yang²,

Bryant³

et al. 2006

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“…The inhibiting effect of metal-containing species on ignition is more complicated. A chemical interpretation of flame inhibiting effect of Fe(CO) 5 has been developed by Rumminger et al 17,18 on the basis of burning velocity measurements on CH 4 -O 2 -N 2 and H 2 -CO-O 2 -N 2 premixed and counterflow flames of varying composition. They report that their kinetic simulations agree with experimental observation for low concentration of Fe(CO) 5 but overpredict the flame inhibition at high concentrations.…”

Section: Resultsmentioning

confidence: 99%

The Inhibition Effect of Fe(CO)₅on the Ignition of Ethane

2004

Bulletin of the Korean Chemical Society

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Halons (halocarbons) have been employed extensively as fire suppression agents over the past three decades, but now have been phased out due to indications they may be responsible for the depletion of stratospheric ozone.1 As a result, efficient, nontoxic flame suppression agents must be found to replace halons. Obvious alternatives are other halogenated hydrocarbons, and much research has recently been devoted to understanding their relative performance and inhibition mechanisms.2 However, an agent with all of the desired properties of CF 3 Br (halon 1301) is proving difficult to find. Consequently, additional research is necessary to identify new suppressants and understand the mechanisms of inhibition of known, effective agents.Flame studies have shown that metal-containing compounds are promising candidates for replacing halons as fire suppression agents.3 In particular, flame velocity studies indicate Fe(CO) 5 can be up to sixty times more efficient a flame inhibitor than CF 3 Br.3 Little has been known, however, about the kinetic mechanism by which iron achieves such impressive flame inhibition. Although iron pentacarbonyl itself is too toxic to be a useful halon replacement, understanding the reasons for its efficiency could provide valuable insight into which chemical properties are most critical to efficient flame inhibition.The first experimental studies of flame inhibition by iron pentacarbonyl are the studies of Wagner and co-workers 4,5 The inhibition effect of Fe(CO) 5 was investigated by measuring the burning velocity of premixed flames with inhibitor added to the reactants. In that research, Bonne et al. 5 found Fe(CO) 5 to be significantly more effective than Br 2 in premixed H 2 -air and hexane-air flames and found that its inhibition effectiveness decreased as the pressure was reduced below atmospheric. Reinelt and Linteris 6 studied the flame inhibition effect of iron pentacarbonyl in premixed flames by measuring the burning velocity, and in counterflow diffusion flames by measuring the extinction strain rate. They found that at low Fe(CO) 5 mole fraction, the burning velocity was strongly dependent on inhibitor mole fraction, whereas at high Fe(CO) 5 mole fraction, the burning velocity was nearly independent of inhibitor mole fraction.In our previous work, 7 it was found that the small amount of Fe(CO) 5 did not cause an increase in the ignition delay of methane. It was a quite surprising result, because that was attempted to increase the ignition delay of methane by addition of Fe(CO) 5 which was known to decrease flame velocity of hydrocarbons effectively. In the present work, the addition effect of Fe(CO) 5 on C 2 H 6 ignition was investigated in order to understand the general features of Fe(CO) 5 as a combustion inhibitor. The characteristics of the oxidation of CH 4 are different from all other hydrocarbons. The dissociation energy of the C-H bond in CH 4 (435 kJ/mol) is much higher that of C-C bonds in C 2 H 6 (370 kJ/mol) or larger aliphatics.8 For this reason, the oxidation of ethan...

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“…This correspondence between the behavior of a perfect inhibitor and Fe(CO)5 lead to the conclusion that the only gas-phase processes can account for its inhibitive power. Rumminger et al 7 investigated the flame inhibition mechanism of iron pentacarbonyl in premixed and counter-flow diffusion flames of methane, oxygen, and nitrogen. For premixed flames numerical predictions of burning velocity were compared with experimental measurements, also for counterflow diffusion flames, numerical prediction of extinction strain rate were compared with experimental results for addition of inhibitor to the air and fuel stream.…”

Section: Introductionmentioning

confidence: 99%

Inhibitory Effect of Solid Inhibitors on LPG Combustible Mixtures

Hamdan

Yamin

Dabbas³

2010

Journal of the Korean Chemical Society

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ABSTRACT. An experimental rig was constructed in order to study the inhibitory effects of two thermal inhibitors namely; stone and calcium carbonate, on Liquefied Petroleum Gas -air flames. This was achieved by measuring the flammability limits of the combustible mixtures before and after the addition of these inhibitors. It was found that calcium carbonate has superior inhibitory effect on the combustible mixture under investigation while, Stone has a lower inhibitory effect than that of calcium carbonate.

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Numerical study of the inhibition of premixed and diffusion flames by iron pentacarbonyl11Official contribution of the National Institute of Standards and Technology; not subject to copyright in the United States.

Cited by 124 publications

References 26 publications

Characterization and identification of super-effective thermal fire extinguishing agents :

Characterization and identification of super-effective thermal fire extinguishing agents :

The Inhibition Effect of Fe(CO)₅on the Ignition of Ethane

Inhibitory Effect of Solid Inhibitors on LPG Combustible Mixtures

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Numerical study of the inhibition of premixed and diffusion flames by iron pentacarbonyl11Official contribution of the National Institute of Standards and Technology; not subject to copyright in the United States.

Cited by 124 publications

References 26 publications

Characterization and identification of super-effective thermal fire extinguishing agents :

Characterization and identification of super-effective thermal fire extinguishing agents :

The Inhibition Effect of Fe(CO)5on the Ignition of Ethane

Inhibitory Effect of Solid Inhibitors on LPG Combustible Mixtures

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Product

Resources

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The Inhibition Effect of Fe(CO)₅on the Ignition of Ethane