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Halide-Free Synthesis and Tribological Performance of Oil-Miscible Ammonium and Phosphonium-Based Ionic Liquids

Title data

Westerholt, Antje ; Weschta, Martin ; Bösmann, Andreas ; Tremmel, Stephan ; Korth, Yasmin ; Wolf, Marcus J. ; Schlücker, Eberhard ; Wehrum, Natalie ; Lennert, Angela ; Uerdingen, Marc ; Holweger, Walter ; Wartzack, Sandro ; Wasserscheid, Peter:
Halide-Free Synthesis and Tribological Performance of Oil-Miscible Ammonium and Phosphonium-Based Ionic Liquids.
In: ACS Sustainable Chemistry & Engineering. Vol. 3 (31 March 2015) Issue 5 . - pp. 797-808.
ISSN 2168-0485
DOI: https://doi.org/10.1021/sc500517n

Official URL: Volltext

Abstract in another language

Due to their low vapor pressures, nonflammability, high thermal stabilities, and excellent tribological properties ionic liquids (ILs) are highly attractive lubricant base oils and additives. However, for practical applications of ILs in lubrication, two requirements are often limiting, the required miscibility with standard mineral oils (≥5 wt ) and the complete absence of corrosive halide ions in the ionic liquid. Moreover, the need for full compatibility with standard oil additives reduces the number of potential IL-based lubricant additives even further. In this contribution, an economic halide-free synthesis route to oil-miscible ionic liquids is presented, and very promising tribological properties of such ILs as base oil or additive are demonstrated. Therefore, sliding tests on bearing steel and XPS analysis of the formed surface films are shown. Corrosion test results of different bearing metals in contact with our halide-free ILs and (salt) water prove their applicability as real life lubricants. In the sustainable chemistry and engineering context, we present a halide-free design approach for ionic performance chemicals that may contribute to significant energy savings due to their enhanced lubrication properties.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Ionic liquid; Halide-free; Lubrication; Oil-miscible; XPS; Noncorrosive
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Engineering Design and CAD
Faculties > Faculty of Engineering Science > Chair Engineering Design and CAD > Chair Engineering Design and CAD - Univ.-Prof. Dr.-Ing. Frank Rieg
Profile Fields > Advanced Fields > Advanced Materials
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 15 Sep 2020 06:06
Last Modified: 15 Sep 2020 06:06
URI: https://eref.uni-bayreuth.de/id/eprint/57092