Letter | Published:

Preferential Adsorption of Long-chain Normal Paraffins on MoS2, WS2 and Graphite from n-Heptane

Nature volume 204, page 680 (14 November 1964) | Download Citation



I REPORTED recently that cast iron1 and graphite2 adsorb preferentially long-chain normal paraffins from hydrocarbon solvents such as n-heptane or benzene. It was thought that the adsorption is relevant to effective lubrication of sliding surfaces of cast iron and graphite by mineral oils. Adsorbed films of hydrocarbons are most likely to reduce the extent to which the rubbing surfaces come into contact, under a given pressure, which would result in less transfer of solid material across the interface and, therefore, a reduced rate of wear.

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  1. 1.

    , Nature, 196, 531 (1962).

  2. 2.

    , Paper presented at a meeting of the Surface Activity Group, Soc. Chem. Indust. (March 9, 1964).

  3. 3.

    , Second Lubrication and Wear Convention, Inst. Mech. Eng., Eastbourne (May 28–30, 1964).

  4. 4.

    , and , The Friction and Lubrication of Solids (Oxf. Univ. Press, 1950).

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  1. BP Besearch Centre, Chertsey Road, Sunbury-on-Thames.

    • A. J. GROSZEK


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