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

Deng, Lanqing; Zhong, Hong; Wang, Shuai; Liu, Guangyi

doi:10.1016/j.seppur.2015.02.029

Cited by 53 publications

(8 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…the flotation recovery of scheelite increased with the increasing pH and and reached maximum values at approximately pH 9, and about 60% was obtained, and the calcite recovery (about 20%) does not change across the entire pH range. The interaction mechanism of minerals with BHA is due to -CONHOH group exhibits a chelating ability with metal ions exposed on the mineral surfaces (Deng et al,2015). Fig.…”

Section: Flotation Experiments Resultsmentioning

confidence: 99%

Flotation separation of scheelite from calcite using mixed collectors

Wei-ping

Liu

et al. 2017

International Journal of Mineral Processing

View full text Add to dashboard Cite

Section: Flotation Experiments Resultsmentioning

confidence: 99%

Flotation separation of scheelite from calcite using mixed collectors

Wei-ping

Liu

et al. 2017

International Journal of Mineral Processing

View full text Add to dashboard Cite

“…Guo et al found that lauric acid, containing a amide group, can strengthen its chemisorption and hydrogen bonding synergy, leading to excellent flotation performance on quartz 24 . Our group developed a novel amide‐hydroxamic acid surfactant (NHOO) 25 . The results indicate that the characteristics of its double reactive centers and hydrophobic groups make it an efficient collector for tungsten.…”

Section: Introductionmentioning

confidence: 93%

“…24 Our group developed a novel amide-hydroxamic acid surfactant (NHOO). 25 The results indicate that the characteristics of its double reactive centers and hydrophobic groups make it an efficient collector for tungsten. Meanwhile, it is easy to bring NHOO into close contact with the wolframite surface; this is achieved through the formation of intermolecular hydrogen bonds by amide groups in NHOO.…”

mentioning

confidence: 95%

Amide group enhanced self‐assembly and adsorption of thioether‐containing hydroxamic acid on cassiterite surface

et al. 2023

Self Cite

View full text Add to dashboard Cite

Modified surfactants can regulate their adsorption at the target surface and are essential for various separation applications such as froth flotation. Thioether‐containing hydroxamic acid (BTHA) is an excellent oxidized‐ore collector with poor dispersibility. Herein, acylamino, which possesses the ability to improve the surfactants' self‐assembly and dispersion, was introduced to synthesize N‐[6‐(hydroxyamino)‐6‐oxohexyl] benzylthioacetamide (BTAHA); thus, applying it to cassiterite flotation. Surface tension, adsorption capacity, in situ AFM, and surface energy results reveal BTAHA displays strong bubble stability and readily adsorbs onto the mineral's surface, promoting hydrophobic flotation. BTAHA is an effective cassiterite collector and has good separation effects on cassiterite against calcite. It can form Van der Waals forces and five‐membered hydroxamate‐(O,O)‐Sn rings with Sn atoms on cassiterite surfaces via thioether and hydroxamate groups. Meanwhile, the presence of intermolecular hydrogen bond between the amide groups facilitates the self‐assembly of the collectors on the cassiterite surface, and has broad industrial application prospects in various separation processes.

show abstract

“…Meng et al (2015) assessed the flotation performance of wolframite in the presence of octyl hydroxamic acid and investigated the interaction of octyl hydroxamic acid (OHA) with wolframite by solution component measurements and surface chemistry analysis, indicating that OHA replaced WO 2 2− ions and interacted with Mn/Fe sites at wolframite surface. Deng et al (2015) found that N-(6-(hydroxyamino)-6-oxohexyl) octanamide (NHOO) presented a good separation performance in wolframite bench-scale flotation tests, suggesting that NHOO might adsorb on wolframite surface mainly through hydrogen bonding and electrostatic attraction by its amide eC(]O) H 2 N + e group at pH below 6.7 or coordination bonding by its hydroxamic eC(]O)NHOgroup at pH above 9.4. In the pH range 6.7-9.3, NHOO might exist as zwitterion species which was formed through intramolecular electrostatic attraction between its positive amide and negative hydroxamic groups.…”

Section: Introductionmentioning

confidence: 99%