Scholarly Literature: Recent submissions

Now showing items 2821-2830 of 3816

Synthesis of SiC from rice husk in a plasma reactor

Singh, S.K.; Mohanty, B.C.; Basu, S. (Bulletin Of Materials Science, 25(6), 2002: 561-563)

A new route for production of SiC from rice husk is reported by employing thermal plasma technique. The formation of beta-SiC is observed in a short time of 5 min. The samples are characterized by XRD and SEM.
Aqueous reduction of crystalline goethite under ammoniacal conditions

Mohapatra, M.; Anand, S.; Das, R.P.; Upadhyay, C.; Verma, H.C. (Hydrometallurgy, 65(2-3), 2002: 227-235)

Pure crystalline goethite was laboratory-prepared and its reduction under various experimental conditions was studied. Both goethite and the reduced products obtained by the action of ammonium sulphite and/or ferrous ...
Oxidative ammonia leaching of sphalerite Part I: Noncatalytic kinetics

Ghosh, M.K.; Das, R.P.; Biswas, A.K. (International Journal Of Mineral Processing, 66(1-4), 2002: 241-254)

The results of oxidative leaching kinetics of sphalerite concentrate in ammonia solution are presented. The effect of oxygen partial pressure (0.5-10 atm), ammonia concentration (1.54-5.35 M), pH (10.4-11.2), leaching ...
Preparation and characterization of Cu(II), Ni(II) or Co(II) ion-doped goethite samples and their conversion to magnetite in NH3-FeSO4-H2O medium

Mohapatra, M.; Anand, S.; Das, R.P.; Upadhyay, C.; Verma, H.C. (Hydrometallurgy, 66(1-3), 2002: 125-134)

Crystalline goethite samples doped with Cu(II), Ni(II) and Co(II) ions were prepared by a coprecipitation method using ferric nitrate, sodium hydroxide and metal ion salt solutions. These samples were characterized by XRD ...
Preparation, characterization and electrolytic behavior of beta-nickel hydroxide

Acharya, R.; Subbaiah, T.; Anand, S.; Das, R.P. (Journal Of Power Sources, 109(2), 2002: 494-499)

Nickel hydroxide is prepared by neutralizing NiSO4 solution with 4.8 M NaOH, followed by washing the precipitate and treating the slurry hydrothemially at different temperatures. The parameters varied are: initial nickel ...
Studies on sulphated zirconia: synthesis, physico-chemical characterisation and n-butane isomerisation activity

Mishra, H.K.; Parida, K.M. (Applied Catalysis A-General, 224(1-2), 2002: 179-189)

A series of sulphated zirconia samples having different weight percentages of sulphate were synthesised by wetness impregnation of zirconium hydroxide with an aqueous solution of (NH4)(2)S2O8. The structural, surface and ...
Factorial design of experiments on the effect of surface charges on stability of aqueous colloidal ceramic suspension

Singh, B.P.; Besra, L.; Bhattacharjee, S. (Colloids And Surfaces A-Physicochemical And Engineering Aspects, 204(1-3), 2002: 175-181)

The present investigation was aimed at studying the synergistic effects of different surface-active agents (SAA) on the stability of aqueous alumina suspensions. The SAA used were dibasic ammonium citrate as dispersant, ...
Liquid-liquid extraction of nickel at macro-level concentration from sulphate/chloride solutions using phosphoric acid based extractants

Sarma, P.V.R.B.; Reddy, B.R. (Minerals Engineering, 15(6), 2002: 461-464)

Extraction of nickel was studied at macro-level concentrations (similar to0.5 M) from solutions containing sodium sulphate/chloride using the extractants D2EHPA, PC 88A and Cyanex 272. Increase of sodium salt concentration ...
Electrowinning of cobalt from sulphate solutions contaminated with organic impurities

Mishra, K.G.; Singh, P.; Muir, D.M. (Hydrometallurgy, 65(2-3), 2002: 97-102)

The electrowinning (EW) of cobalt from sulphate solution contaminated with organic impurities: tri-n-butyl phosphate (TBP), 2-hexylmethyl decanoic acid (VERSATIC 10), 2-hydroxy-5-nonyl acetophenone oxime (LIX 84), ...
Effect of Cr3+ on the electrodeposition of nickel from acidic sulfate solutions

Mohanty, U.S.; Tripathy, B.C.; Singh, P.; Das, S.C. (Minerals Engineering, 15(7), 2002: 531-537)

The effect of Cr3+ on the cathodic current efficiency (CE), deposit morphology, crystallographic orientations and polarisation behaviour during nickel electrodeposition from acidic sulfate solutions containing boric acid ...

Now showing items 2821-2830 of 3816

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