New Boronium Ionic Liquids as Ash-less Lubricant Additives
Novina MALVIYA1, Farah FAZLINA BT M YASIN2, Maria TERESA SATERIALE3, Yoan DELAVOUX1, Andrea DOLFI3, Geetha SRINIVASAN2, John HOLBREY1, Gosia SWADZBA-KWASNY1
1Queen's University Belfast, Belfast Northern Ireland, United Kingdom
2The PETRONAS Research SDN BHD, Bangi, Selangor, Malaysia, Malaysia
3PETRONAS LUBRICANTS Research Centre, Santena, Turin, Italy, Italy
Modern engine designs require lubrication for increasingly close contact between shearing planes, which places increasing importance on lubricant additives. Commercial lubricant packages decrease friction and wear, but contain sulfur, zinc, phosphorus, and halogens, which contribute to the formation of soot and – when they reach other elements of the engine – can act as poisons to catalytic converters.
Many ionic liquids (ILs) have been found to be a good replacement for commercially available packages, either acting as lubricants, or as additives in conventional base oils.1 Still, most reported ILs are off-the-shelf compounds, containing many corrosive elements which required further structural design for effective and less corrosive ILs.
Here, we developed new boronium ionic liquids with triboactive cations and anions, which are synthesised via a halogen-free route and contain only elements that are abundant and benign to catalytic converters (C, H, O, N, B).
1. ZHOU Y. AND J. QU, ACS APPL MATER INTER, 2017, 9, 3209-3222.