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词汇 naphthene
释义

Definition of naphthene in English:

naphthene

noun ˈnafθiːnˈnapTHēn
Chemistry
  • Any of a group of cyclic aliphatic hydrocarbons (e.g. cyclohexane) obtained from petroleum.

    〔化〕环烷属烃

    Example sentencesExamples
    • Since ethylenediamine is very polar, naphthenes are preferentially permeated to the solvent side.
    • The octane numbers of alkyl-substituted naphthenes trend similarly to those of alkyl-substituted aromatics.
    • Oils high in naphthene also contain more impurities such as phytotoxic aromatic and unsaturated hydrocarbons.
    • Also, a higher net production of light naphthenes can be achieved for lower values of U.
    • Most horticultural oils contain naphthene and paraffin compounds.

Derivatives

  • naphthenic

  • adjective nafˈθiːnɪk
    Chemistry
    • These are complex mixtures of paraffinic, aromatics and naphthenic hydrocarbon type molecules, ranging in carbon number from 14 to 40 +.
      Example sentencesExamples
      • The different factors responsible for naphthenic corrosion as well as the ways of fighting it are reviewed.
      • Due to the dwindling supplies of naphthenic based crude reserves, a suitable replacement oil must be found for electrical apparatus.
      • Disclosed is a process for opening naphthenic rings of naphthenic ring containing compounds, and catalysts which can be used in that process.
      • The results given in Figure 3 show that the oil separation is lower for the naphthenic based grease.

Definition of naphthene in US English:

naphthene

nounˈnapTHēn
Chemistry
  • Any of a group of cyclic aliphatic hydrocarbons (e.g. cyclohexane) obtained from petroleum.

    〔化〕环烷属烃

    Example sentencesExamples
    • Oils high in naphthene also contain more impurities such as phytotoxic aromatic and unsaturated hydrocarbons.
    • The octane numbers of alkyl-substituted naphthenes trend similarly to those of alkyl-substituted aromatics.
    • Also, a higher net production of light naphthenes can be achieved for lower values of U.
    • Since ethylenediamine is very polar, naphthenes are preferentially permeated to the solvent side.
    • Most horticultural oils contain naphthene and paraffin compounds.
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