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naphthenes

naphthenes CHIM
naphthenes CHIM

naphthene series CHIM

naphthene base crude PETROLCHIM

Esempi monolingue (non verificati dalla Redazione di PONS)

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Researches in the sphere of catalytic alkylation of aromatic, paraffinic, naphthenes hydrocarbons with the help of unsaturated hydrocarbons, enabled the synthesis of the components of aviation fuels on industrial scale.
en.wikipedia.org
It is low in aromatics (depending on the grade of crude oil), containing some cycloalkanes (naphthenes) and no olefins.
en.wikipedia.org
The product stream is high in naphthenes and aromatics, low in paraffins and very low in olefins.
en.wikipedia.org
More advanced processes, such as cyclicization of paraffins and dehydrogenation of naphthenes forming aromatic hydrocarbons in a catalytic reformer, have also been developed to increase the octane rating of gasoline.
en.wikipedia.org
This process again produces two products: a byproduct wax that is almost completely paraffinic and a dewaxed oil that contains paraffins, naphthenes and some aromatics.
www.machinerylubrication.com
However, both the dehydrogenation of naphthenes and the dehydrocyclization of paraffins produce hydrogen.
en.wikipedia.org
Overall, a typical gasoline is predominantly a mixture of paraffins (alkanes), cycloalkanes (naphthenes), and olefins (alkenes).
en.wikipedia.org

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