Synthesis and physicochemical properties of tetraalkylammonium thiomolybdates as precursors of triboactive molybdenum sulfides

Terekhin, D. V.; Basharina, K. Yu.; Bordubanova, E. G.; Khodzhaeva, V. L.; Kuz’mina, G. N.; Parenago, O. P.

doi:10.1134/s0965544109020108

Cited by 3 publications

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“…The initial temperature of tetrathiotungstates decomposition decreases when hydrogen atoms are substituted by alkyl radicals and this parameter decreases as the alkyl radical grows in size, except for the tungsten compound with the C 8 -radical in the ammonium group. A similar result was previously published in research [29] for tetraoctylammonium tetrathiomolybdate and it is probably related to octyl radical conformation, which provides higher thermal stability for its compounds.…”

Section: Resultssupporting

confidence: 87%

Synthesis of tungsten sulfide nanoparticles and their tribological properties as additives for lubricating oils

et al. 2016

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Tetrathiotungstates with different alkyl groups have been synthesized by an exchange reaction between ammonium tetrathiotungstate and tetraalkylammonium halides. Synthesized samples are analyzed by elemental analysis and optical and thermal methods. Nano-WS 3 particles that are stable and soluble in nonpolar hydrocarbons are prepared by thermolysis of alkyltetrathiotungstates. The average particle size of nano-WS 3 is about 10-100 nm and depends on the nature of raw tetraalkylammonium halides. It is shown that nanoparticles of WS 3 are soluble in Vaseline oil (1-2 wt %) and exhibit antiwear activity.

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Section: Resultssupporting

confidence: 87%