FTIR analysis of water structure and its significance in the flotation of sodium carbonate and sodium bicarbonate salts

Nickolov, Zh.; Özcan, O.; Miller, Jan D.

doi:10.1016/s0927-7757(03)00317-0

Cited by 43 publications

(30 citation statements)

References 9 publications

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“…We have suggested that interfacial water structure and hydration states of soluble salt surfaces, together with the precipitation tendency of the corresponding collector salts, have to be considered in the explanation of this fundamentally interesting and industrially important flotation behavior. Similar phenomena were observed in the flotation of carbonate saltssodium cabonate, sodium bicarbonate and trona [2]. While sodium bicarbonate was floated equally well with anionic and cationic collectors, sodium carbonate was not floated at all with any of them.…”

Section: Introductionsupporting

confidence: 76%

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Water structure in aqueous solutions of alkali halide salts: FTIR spectroscopy of the OD stretching band

Nickolov

Miller

2005

Journal of Colloid and Interface Science

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Section: Introductionsupporting

confidence: 76%

“…(2) and (3) [21]. Table 1 shows the water structure making/breaking character of the studied salts as inferred from their OD stretching band dependence on concentration, and from the values of the coefficient b in Eq.…”

Section: Correlation Of Od Band Analysis With Viscositymentioning

confidence: 99%

Water structure in aqueous solutions of alkali halide salts: FTIR spectroscopy of the OD stretching band

Nickolov

Miller

2005

Journal of Colloid and Interface Science

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“…Changes in the bandwidth and the peak wavenumber of the O-H (O-D) stretching band reflect changes in H-bonding [27]. When water structure is studied in D 2 O or D 2 O/H 2 O mixtures, the O-D stretching band between 2150 and 2750 cm −1 is analyzed as in this work.…”

Section: Ftir Spectroscopy Measurementsmentioning

confidence: 99%

Water structure and its influence on the flotation of carbonate and bicarbonate salts

Özdemir

Çelik

Nickolov

et al. 2007

Journal of Colloid and Interface Science

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“…, 1996;Gorbaty and Bondarenko, 1999;Tassaing et al, 2002;Gorbaty et al, 2004;Zhang and Hu, 2004) ( , 1997;Ikushima et al, 1998;Kawamoto et al, 2004;Okada et al, 2005) (2003) (2000) (2002) Meer et al, (2005) nm OH 9 3 5 6 (Koga et al, 1998) OH (Frantz, 1998;Masuda et al, 2003;Nickolov et al, 2003;Li et al, 2004;Nickolov and Miller, 2005) (HDF Hydrothermally Derived Fracturing) HDF (Hirano et al, 2002) (Hirano et al, 2003) 900 C 2 5 GPa (2000) …”

mentioning

confidence: 99%

“…(BX51, ( 2000;Tassaing et al, 2002;Masuda et al, 2003;Nickolov, 2003;Gorbaty, 2004) (100 C 400 C) Figure 5 100 C 400 C (Thompson, 1965…”

mentioning

confidence: 99%

IR and Raman spectroscopic measurements of water at high temperatures and pressures

Abe¹,

Hirano²,

Tsuchiya³

2006

Japanese Magazine of Mineralogical and Petrological Sciences

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High temperature pressure cell for micro IR and Raman spectroscopy have been developed to investigate molecular structure of water under sub and supercritical conditions. The maximum temperature and pressure of the cell were 400 C and 50 MPa, and artificial yellow diamond was installed as a transparent window of the cell. In case of micro IR spectroscopic measurement, incident beam was illuminated to the high temperature pressure cell using the Cassegrainian mirror, and reflected light was analyzed by FTIR system. In case of micro Raman spectroscopic measurement, an incident laser beam (Nd:YAG laser: 532 nm) was irradiated into the cell through standard optical lens. As a result of infrared spectroscopic measurements of water, the broad peak around 3360 cm 1 of infrared spectra, attributed to OH stretching vibration mode of water molecular, was observed at room temperature and pressure. The peak position shifted to higher wavenumber with increasing temperature and shifted to lower wavenumber with increasing pressure. Continuous shift of the OH stretching vibration mode of water molecule was detected by using newly designed high temperature pressure cell. The peak position and behavior of peak shift of interfacial water were affected by substrate. In case of interfacial water on artificial quartz, the peak position shifted to higher wavenumber with increasing temperature, however no obvious change was observed with as a function of pressure.It was possible to measure IR and Raman spectra under supercritical condition by using high temperature pressure cell, and characteristics of molecular structure of interfacial water revealed by IR spectra was changed by environmental conditions such as temperature, pressure and substrate.

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FTIR analysis of water structure and its significance in the flotation of sodium carbonate and sodium bicarbonate salts

Cited by 43 publications

References 9 publications

Water structure in aqueous solutions of alkali halide salts: FTIR spectroscopy of the OD stretching band

Water structure in aqueous solutions of alkali halide salts: FTIR spectroscopy of the OD stretching band

Water structure and its influence on the flotation of carbonate and bicarbonate salts

IR and Raman spectroscopic measurements of water at high temperatures and pressures

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