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Selucky P.,UJV Rez | Bubenikova M.,UJV Rez | Rais J.,UJV Rez | Gruner B.,Academy of Sciences of the Czech Republic | Brusko V.V.,JSC NIIneftepromchim
Radiochimica Acta

Extraction of Eu(III) with a synergistic mixture of polydentate N-phosphorylated bis-ureas with the general formula (i-PrO)2P(O) NHC(O)NHXNHC(O)NHP(O)(Oi-Pr)2 (X = (CH2)7, (CH2)2O(CH2)2 and (CH 2)2O(CH2)2O(CH2) 2) and chlorinated cobalt bis(dicarbollide) ion (CCD-) with formula closo-[(1,2-C2B9H8Cl 3)2-3-Co]- was studied using nitrobenzene as the solvent. Extraction of Eu(III) was very effective up to high concentrations of nitric acid. Eu(III) is most likely extracted into the organic phase as the [EuL2]3+ species whereas the positive charge of extracted complex is compensated by CCD and/or nitrate anions. © by Oldenbourg Wissenschaftsverlag, München. Source

Rakhmatullina G.M.,JSC NIIneftepromchim | Zapeklaya G.N.,JSC NIIneftepromchim | Volodina E.L.,JSC NIIneftepromchim | Nasylenko N.V.,JSC NIIneftepromchim | Nasybullina A.S.,JSC NIIneftepromchim
Neftyanoe Khozyaistvo - Oil Industry

The high concentration of hydrogen sulfide in oil causes many hard problems in production, transportation and refining. Different methods Including application of scavengers are proposed for removing hydrogen sulfide. The paper discloses the results of application of Desoulfon-SNPCH-1200 scavenger In different oil-production companies. Source

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