Ion exchange and liquid column chromatography

Part II. Chromatography using ultra-stable metal oxide-based stationary phases for HPLC

“…Ion-exchange liquid chromatography is a powerful technique for the separation of both small inorganic and organic charged molecules [141][142][143][144], as well as larger bio-molecules such as: peptides, proteins and nucleic acids. Polyethyleneimine has been widely used [145][146][147][148][149] as a polymer coating for a variety of substrates [150][151][152][153] including silica, titania, alumina, zirconia clad-silica and porous polystyrene-divinylbenzene beads to produce ion-exchangers.…”

Transition-metal co-ordination compounds containing a novel tridentate pyrazole chelating ligand. X-Ray crystal structure of [NN-bis(3,5-dimethylpyrazol-1-ylmethyl)aminoethane](nitrato-O)-(nitrato-O,O′)nickel (II)

“…One nitrate group is monodentate [ Ni-0 2.052(5) A], whereas. the other is bidentate [Ni-0 2.157(5) and 2.145 (5) A]. Ni-N distances are 2.061 (5) and 2.034(5) A for the pyrazole nitrogens and 2.1 28(5) p\ for the amine nitrogen.…”

Removal of p-aminophenol and p-nitrophenol from aqueous solution through adsorption on antimony, cadmium, and zirconium ferrocyanides

“…The metal ferrocyanides have the general molecular formula M 2 [Fe(CN) 6 ]·xH 2 O, where M = Cu 2+ , Zn 2+ , Cd 2+ , etc. These metal ferrocyanides have worked as well-known adsorbents [2][3][4][5][6] and ion exchangers [7][8][9][10][11][12].…”