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Louis Joseph Troost carried on a large number of researches, alone or with Deville, Hautefeuille, and other colleagues, on the isolation of lithium, determination of its atomic mass, and preparation of many of its salts, on allotropic phenomena, on the use of electromotive force of a cell to determine the heat effects of a reaction, determination of the density of vapors at high temperatures, dissociation of gases, niobium and its compounds, the hydrides of palladium, sodium, and potassium, and the influence of manganese and silicon on the properties of the different varieties of iron..
Louis Joseph Troost was born in Paris in October 17, In he was awarded his doctorate of science at the Faculty of Sciences of Paris Sorbonne , under the direction of Henry Sainte-Claire Deville In he was appointed Maitre de Conferences at the Faculty of Sciences of Paris Sorbonne , following the signifcant papers he had published with Deville about the density of vapors.
In he was promoted to the Chair of Mineral Chemistry, replacing Louis Pasteur , and in he was appointed to the Chair of General Chemistry, replacing Henri Debray He kept this position until his retirement in Henry Moissan replaced him in at the Chair. After discovering a practical method for preparing highly pure lithium chloride, he isolated the metal, determined its atomic mass, and showed that it constituted the bridge between the alkali metals Na, K and the alkali earth ones.
He also prepared and determined the properties of many of its salts Troost, , , Troost studied magnesium Troost, , chloral and its hydrate Troost, b c , a b c , b , and the reaction of HCl with ammonia Troost, a. Together with Paul Gabriel Hautefeuille he published a series of studies about boron and silicon Troost and Hautefeuille, a b , , , the formation of paracyanogen and its reversible dissociation to cyanogen, the transformation of cyanic acids into its isomers Troost and Hautefeuille, a b c d , a b , the allotropic conversions of white phosphorus into red phosphorus Troost and Hautefeuille, b , the hydrides of palladium, sodium, and potassium Troost and Hautefeuille, a b c d , a , the influence of silicon and manganese on the physical properties of commercial iron Troost and Hautefeuille, c, b , etc.
