A Preparative and X-Ray Powder Diffraction Study of the Polysulfides Na2S2, Na2S4 and Na2S5.

Rosén, Erik; Tegman, Ragnar; Lindberg, Bengt; Svensson, Sigfrid; Koskikallio, Jouko; Kachi, Sukeji

doi:10.3891/acta.chem.scand.25-3329

Cited by 64 publications

(33 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sulphide concentration ranged between 3 and 8.4 x 10 -5 mmol m -3 with two peaks, at 4 m depth and in the bottom layer. Transparency was low and the water colour was white-yellowish, probably due to formed polysulphides (Rosen and Tegman, 1971). Oxygen saturation in the water column was zero, except in the surface layer (down to 1 m depth) where the value of 5% was recorded (Fig.…”

Section: Characteristics Of the Water Column Immediately After Mass Mmentioning

confidence: 97%

Mass mortality event in a small saline lake (Lake Rogoznica) caused by unusual holomictic conditions

Barić¹,

Grbec²,

Kušpilić³

et al. 2003

Sci. Mar.

View full text Add to dashboard Cite

Section: Characteristics Of the Water Column Immediately After Mass Mmentioning

confidence: 97%

Mass mortality event in a small saline lake (Lake Rogoznica) caused by unusual holomictic conditions

Barić¹,

Grbec²,

Kušpilić³

et al. 2003

Sci. Mar.

View full text Add to dashboard Cite

“…The power supply was then turned off, and the potential across the cell was monitored with time and recorded every 10 minutes using two buffer amplifiers and a 19 multimeter. The buffer amplifiers were unity-gain devices with input impedances greater than 10 12 ohms.…”

Section: Determination Of the Cellmentioning

confidence: 99%

Differential Diffusion Coefficients of Sodium Polysulfide Melts

Thompson

Newman

1989

J. Electrochem. Soc.

View full text Add to dashboard Cite

The method of restricted diffusion has been applied to sodium polysulfide melts in order to determine differential diffusion coefficients spanning the composition range of the single‐phase liquid region false(Na2S3 to Na2S5false) , at temperatures between 300° and 350°C. Molybdenum electrodes at the ends of the cell gave open‐circuit potentials in response to the transient concentration difference. The shape of the potential vs. time plots showed the expected dependence on the initial concentration profile. The following expression summarizes the experimental dataD=0.0153exp)(−5890/Texp)(5.30xnormale cm2/normals ][1The diffusion coefficients showed a temperature dependence in harmony with viscosity data, but not conductivity data.

show abstract

“…The X-ray powder diffraction patterns of some of the crystalline compounds have been reported by Rosen (1971) 71 Other properties of polysulfides relevant to the present study include the following: The polysulfides are reported to be hygroscopic and readily oxidized in air; the hydrolysis rates decrease in the order Na 2 S > Na 2 S 2 > Na 2 S 4 > Na 2 S 5 and they form insoluble precipitates with mercury, lead, cadmium, chromium and copper in aqueous solution. ,…”

Section: Description Of Polysulfides Investigatedmentioning

confidence: 99%