The Chemico-Analytical Character of Indium

Busev, A.I.

doi:10.1016/b978-0-08-009728-2.50006-8

Cited by 10 publications

(15 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Studies have been made by potentiometry, 1 s 2 polarography,3-5 spectrophotometry,6-7 pH measurements,8-11 cation exchange 1 9 2 9 129 13 anion exchange 14-17 and solvent extraction.1312918 Sunden 1 9 2 has studied the chloride and sulphate systems by ligand displacement and central ion potentiometric methods, cation exchange and partition, with an impressive measure of agreement between results. Indium complex studies have been reviewed by Irving,l2 Busev 19 and in Stability Constants. 20 Raman studies by Woodward et aZ., [21][22][23] and solvent extraction work by Irving and Rossotti 18 of solutions of indium in concentrated hydrohalic acids and their ether extracts, have established the presence of tetrahedral InX, ions (X = C1,BrJ) in all the ethereal phases, and also in the aqueous phase for iodide, but not for bromide and chloride.…”

mentioning

confidence: 99%

Magnetic resonance studies of solutions containing 115In

Cannon¹,

Richards²

1966

Trans. Faraday Soc.

View full text Add to dashboard Cite

N.m.r. linewidth studies are described for lWn in aqueous solutions of the nitrate and sulphate.Because it has a large nuclear electric quadrupole moment, 11% has short relaxation times and the effects on these of (a) viscosity and (b) symmetry of molecular environment, are investigated. Hydrolysis at low concentrations increases the linewidth, and in the nitrate solutions, but not the sulphate, weak complex formation increases linewidth at high concentrations. Chemical shift data also support this interpretation.Complexes are formed in indium halide solutions and exchange rates forare calculated by the exchange broadening of the llsIn line on adding small amounts of halide to In(ClO& solutions. A similar calculation is made for the InClJCl-exchange. The resonances of the species InXz (X = Cl,Br,I) in ethereal solution are described and a table of linewidths and shifts given. In conc. aqueous HCl and HBr other less symmetrical species are present.

show abstract

mentioning

confidence: 99%

Magnetic resonance studies of solutions containing 115In

Cannon¹,

Richards²

1966

Trans. Faraday Soc.

View full text Add to dashboard Cite

show abstract

“…Divalent Sn was partially precipitated by tannic acid. In is not precipitated by tannic acid [20]. Therefore, its presence may be explained by adsorption of In on precipitate surface.…”

Section: Discussionmentioning

confidence: 97%

Precipitation of Germanium from Sulphate Solutions Containing Tin and Indium Using Tannic Acid

et al. 2019

View full text Add to dashboard Cite

The precipitation of tannin complex of germanium from sulfuric solutions obtained after dross leaching was investigated. The tested solutions contained mainly zinc, germanium, indium, and tin. The influence of temperature, time, amount of added tannic acid and its purity was determined. The application of pure tannic acid allowed the precipitation of >99% of germanium and decreased its concentration in a solution <0.015 g/dm3. It required ca. 11–13 g of pure tannic acid per each 1 g of dissolved germanium. The preferred process conditions for Ge precipitation using powder tannic acid were 90 °C, 90 min, whereas for 20% aq. solution—5 min. It was found that 40% to 50% of tin coprecipitated at these conditions. Therefore, a detinning operation using hydrogen peroxide was proposed. It allowed the removal of >99% Sn and reduced its concentration in the solution below 0.025 g/dm3.

show abstract

“…The formation of the In 2 S 3 films is based on the slow release of In 3+ and S 2− ions in an acidic medium and their subsequent condensation on the substrates when the ionic product exceeds the solubility product, K ps (10 −73 ) [10]. Sulfide ions are provided by the hydrogen sulfide produced during the thioacetamide hydrolysis in dilute acid solution.…”

Section: The Film Formation Mechanismmentioning

confidence: 99%