Soot formation characteristics of laminar partially premixed flames

Mitrovic, A.; Lee, Taewoo

doi:10.1016/s0010-2180(98)00004-2

Cited by 37 publications

(8 citation statements)

References 8 publications

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“…Then there is a more rapid decrease in the flame height below this equivalence ratio. This observation is in accord with the results of Mitrovic and Lee [14]. The bright area in the images corresponds to the soot-containing region.…”

Section: Resultssupporting

confidence: 92%

“…Laser-induced incandescence (LII) of soot provides spatially and temporally resolved measurements of soot distribution [12][13][14]. A calibration procedure, often based upon extinction measurements or gravimetric analysis, is normally required.…”

Section: Introductionmentioning

confidence: 99%

“…However, their equivalence ratio range was limited to 2.34-2.94, which is insufficient to characterize the effect of premixing over a wide range of equivalence ratios. Mitrovic and Lee [14] used LII to characterize sooting in partially premixed flames across the equivalence ratio range of five to infinity (i.e., completely nonpremixed) while keeping a constant fuel flowrate of 2.2 cm 3 /s. McEnally and Pfefferle [37] and Bennett et al [38] also measured soot formation in partially premixed ethylene/air flames.…”

Section: Introductionmentioning

confidence: 99%

“…While these results undoubtedly provide considerable insight into the soot formation process, dilution with cold inert species is unimportant in many applications. Mitrovic and Lee [14] measured soot volume fractions in PPFs established over a wide equivalence ratio range with undiluted ethylene and air. For calibration purposes, they considered an overall nonsooting flame.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Field measurements of soot volume fractions in laminar partially premixed coflow ethylene/air flames

Arana

Pontoni

Sen

et al. 2004

Combustion and Flame

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Field measurements of soot volume fractions in laminar partially premixed coflow ethylene/air flames

Arana

Pontoni

Sen

et al. 2004

Combustion and Flame

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“…It is 50 times lower than values reported in axisymmetric ethylene diffusion flames [24][25][26]. Concerning premixed or partially premixed axisymmetric flames, most studies consider ethylene flames with high values of / (/ > 5) [27,28]. Thus, the peak f v is around 3 ppm (/ = 5) in [28] while f v peaks at 475 and 15 ppb in our acetylene flames at / = 3.5 and 2.9, respectively.…”

Section: Soot Volume Fraction and Pah Absorbance Profilesmentioning

confidence: 54%

Molecular species adsorbed on soot particles issued from low sooting methane and acetylene laminar flames: A laser-based experiment

Bouvier

Mihesan

Ziskind

et al. 2007

Proceedings of the Combustion Institute

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Comprehensive Characterization of a Sooting Laminar Methane‐Diffusion Flame Using Different Laser Techniques

Seeger¹,

Egermann

Dankers

et al. 2004

Chem Eng & Technol

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Communications w). This observation clearly proves that other factors, such as the microstructure and the Cu/ZnO interface, have important impacts on catalysis.It can be concluded that the deposition-precipitation and the CVD methods can yield catalysts which are more active than catalysts with similar compositions prepared by the conventional co-precipitation method. In particular, the deposition-precipitation, apart from co-precipitation, proves a convenient and easy-to-handle preparation route in the synthesis of active Cu/ZnO catalysts. Concluding Remarks and OutlookIn recent years, within our Collaborative Research Center in Bochum it has been possible to provide insights concerning the Cu/ZnO system for methanol synthesis. Detailed kinetic studies under steady-state and unsteady-state conditions were performed, along with the application of physicochemical characterization methods. Thus, in cooperation with inorganic and material chemists, the development of new preparation routes for more efficient methanol synthesis catalysts was possible and a deeper understanding of the working catalyst under operating conditions was achieved.The interaction between Cu and ZnO obviously plays an important role in catalysis under methanol synthesis conditions. Hence, in a rational catalyst design, it is not only the aim to obtain a large Cu surface area, but the Cu/ZnO interface should also be optimized. Further improvement of the above presented deposition-precipitation and CVD methods will be an interesting challenge in future catalyst research and catalyst development. AcknowledgementThe authors would like to thank the DFG for the generous financial support within the project A1, in the framework of the Sonderforschungsbereich 558 ªMetall-Substrat-Wechselwirkungen in der heterogenen Katalyseº, as well as the other working groups in Bochum and Mülheim involved in this research. Further, we are much obliged to a long standing, fruitful cooperation with the group of Prof. Schlögl at the Fritz-Haber-Institut of the Max-Planck-Gesellschaft.

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Soot formation characteristics of laminar partially premixed flames

Cited by 37 publications

References 8 publications

Field measurements of soot volume fractions in laminar partially premixed coflow ethylene/air flames

Field measurements of soot volume fractions in laminar partially premixed coflow ethylene/air flames

Molecular species adsorbed on soot particles issued from low sooting methane and acetylene laminar flames: A laser-based experiment

Comprehensive Characterization of a Sooting Laminar Methane‐Diffusion Flame Using Different Laser Techniques

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