《The adsorption of polar cyclic compounds on iron surfaces from hydrocarbon solutions and their lubricating properties》 was written by Nakayama, Keiji; Studt, Peter. HPLC of Formula: 591-70-8 And the article was included in Wear on April 15 ,1987. The article conveys some information:
The adsorption is studied of polar cyclic organic compounds from hydrocarbon solutions on Fe powder without removal of any oxide film potentially present on the Fe surface. β-Naphthol is chemisorbed on the Fe surface. The adsorption isotherms of cyclohexanol, α-naphthylamine and quinoline can be fitted by a Langmuir equation. From the adsorption data the surface areas occupied by 1 mol. of these compounds are obtained. The polar cyclic compounds investigated reduce the friction of steel sliding over steel under boundary lubrication conditions, but straight chain compounds with polar end groups in cetane are better boundary lubricants. The load-carrying capacity of friction contacts lubricated with polar aromatic compounds depends on the geometry of the contact. Lubrication of flat contacts with aromatic compounds in cetane provides a higher load-carrying capacity than lubrication with stearic acid as an additive. This is due to the formation of C or decomposition products rich in C on the sliding surface by the aromatics Aromatic cyclic compounds give low friction at much higher bulk oil temperatures than straight chain compounds; this must be due to chemisorption or decomposition of the aromatics on the surface. Mixtures of β-naphthol and stearic acid or 1-octadecanol in cetane give low friction at up to 160° bulk oil temperature In the experimental materials used by the author, we found Octadecan-9-ol(cas: 591-70-8HPLC of Formula: 591-70-8)
Octadecan-9-ol(cas: 591-70-8) belongs to hydroxy-containing compounds. Hydroxy groups participate in the dehydration reactions that link simple biological molecules into long chains. The creation of a peptide bond to link two amino acids to make a protein removes the −OH from the carboxy group of one amino acid.HPLC of Formula: 591-70-8
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