New insights into the metal ion–peptide hydroxamate interactions: Metal complexes of primary hydroxamic acid derivatives of common dipeptides in aqueous solution

A novel collector 2-ethyl-2-hexenoic hydroxamic acid: Flotation performance and adsorption mechanism to ilmenite

“…2). Under pH 6.3-10.5, there exists Ti(OH) 4 , FeOH + , Fe(OH) 2 or Fe(OH) 3 − species on ilmenite surfaces [40]. And EHHA exists in its molecular and ionic species.…”

“…However, hydroxamic acids possess stronger abilities for selectively chelating metal ions [1][2][3][4][5][6][7]. Commonly, the two O atoms in carbonyl and hydroxyl groups of a hydroxamate molecule bond with metal cation to form a five-membered ring structure.…”

Study on the Activation of Scheelite and Wolframite by Lead Nitrate

“…As well-known chelating collector, hydroxamic acids are effective ligands with metal ions. The chelating performance of hydroxamic acids with transition metals including Fe, Ni, Cu and Zn has been studied through theoretical and experimental methods [4][5][6]. Research of chelation between hydroxamic acids and Pb has also been reported [7].…”

A novel surfactant N-(6-(hydroxyamino)-6-oxohexyl)octanamide: Synthesis and flotation mechanisms to wolframite

“…In recent years, the chelating performances of hydroxamates with transition metals including Cu, Ni, Zn, Fe, Cr, Mn and Co have been studied through theoretical and experimental methods [1][2][3][4][5][6][7]. These investigations posited that one metal ion could chelate 2 or 3 hydroxamate groups to form five-membered ring complexes according to the valence of metal examples.…”