Extraction of titanium with phenol-formaldehyde resol oligomer Yarresin B from peroxide solutions
作者:S. A. Semenov、A. Yu. Matviets、A. M. Reznik
DOI:10.1134/s0036023608060260
日期:2008.6
Extraction of titanium by nitrogen-containing phenol-formaldehyde oligomer Yarresin B from peroxide sulfate solutions was studied. Molecular dynamic (MD), molecular mechanic (MM), ZINDO/1 semiempirical (single-point calculations; program package HyperChem, Release 7.52, Hypercube Inc.) calculations, and the Cambridge Structure Database (ConQuest 1.8) were used to solve the structure of the extracted complex [Ti(O)(2)OR(OH)(2)](2)SO(4).
Extraction of niobium with phenol-formaldehyde resol oligomer Yarrezin B from peroxide solutions
作者:D. V. Bychenkov、A. M. Reznik、S. A. Semenov
DOI:10.1134/s0036023610050232
日期:2010.5
Extraction of niobium by nitrogen-containing phenol-formaldehyde resol oligomer Yarrezin B from peroxide sulfate solutions was studied. The stoichiometry of extraction was determined. The structure of the extracted complex Nb(O(2))(OH)O(2)R(OH)N was predicted by molecular mechanics (MM) and molecular dynamics (MD) methods and the semiempirical ZINDO/1 method (single-point calculations) with the use of the HyperChem Release 8.0.4 program package.