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D.H. Cotton

Bio: D.H. Cotton is an academic researcher from Royal Dutch Shell. The author has contributed to research in topics: Metallurgy & Materials science. The author has an hindex of 1, co-authored 1 publications receiving 105 citations.

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Journal ArticleDOI
TL;DR: In this paper, a semiquantitative mechanism was proposed for the alkaline earth metals; its basis is that these metals undergo a homogeneous, gas-phase reaction with flame gases to produce hydroxyl radicals which rapidly remove soot or soot precursors.

109 citations

Journal ArticleDOI
TL;DR: In this article , a comparison of diffusion couples of increasing chemical and geometrical complexity (Fe/Ti, 316L/Ti), highlighting the formation mechanisms of interfacial structures.

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Journal ArticleDOI
TL;DR: In this article, the authors present a mechanism for soot formation in a premixed laminar flame, where chemiions are assumed to be the precursor on which the free radicals, polyacetylenes, and polycyclic aromatic hydrocarbons repeatedly add in fast ion-molecule reactions.

351 citations

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TL;DR: In this paper, the potential of catalytic systems in automobile emission control is discussed, and a review of the catalytic technology applicable in each case, the operating principles and performance characteristics, durability aspects and considerations regarding the interactions between catalyst performance and engine management are presented.

340 citations

Journal ArticleDOI
01 Jan 1979

216 citations

Journal ArticleDOI
01 Jan 2007
TL;DR: In this paper, the authors discussed how N, S, Cl, and K/Na species, typically present in small quantities, may affect the overall combustion process, as well as the formation or transformation of each other.
Abstract: Concern about pollutant formation and emissions continues to be a driving force for research in combustion chemistry. Important pollutants include nitrogen oxides (NO x ), sulfur oxides (SO x ), chlorine species, unburned or partly burned fuel components (e.g., UHC, aldehydes, CO), aromatic and polycyclic aromatic compounds, and aerosols (soot, alkaline aerosols). In this review, it is discussed how N, S, Cl, and K/Na species, typically present in small quantities, may affect the overall combustion process, as well as the formation or transformation of each other. Of special interest is their ability to sensitize or inhibit oxidation of fuel and CO, depending on the reaction conditions; the impact of S, Cl and K/Na on formation of NO x , PAH, and soot; and the interaction of sulfur, chlorine and alkali species, which may have significant implications for emissions of SO 2 , HCl, and aerosols.

190 citations

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TL;DR: Soot formation is undesirable when it leads to environmental pollution or damages the performance of combustion equipment as mentioned in this paper, and the prevention of soot emission is an important constraint in the design and operation of combustion systems.

154 citations