Theoretical Study on Water-Exchange Reactions of the Divalent and Trivalent Metal Ions of the First Transition Period

1994 ◽  
Vol 116 (19) ◽  
pp. 8705-8713 ◽  
Author(s):  
Ralf Aakesson ◽  
Lars G. M. Pettersson ◽  
Magnus Sandstroem ◽  
Ulf Wahlgren
Keyword(s):  
Metal Ions ◽  
Water Exchange ◽  
Theoretical Study ◽  
Transition Period ◽  
Exchange Reactions ◽  
Trivalent Metal ◽  
Trivalent Metal Ions

Theoretical study of water-exchange reactions for the divalent ions of the first transition period

1993 ◽  
Vol 97 (15) ◽  
pp. 3765-3774 ◽  
Author(s):  
Ralf Akesson ◽  
Lars G. M. Pettersson ◽  
Magnus Sandstroem ◽  
Per E. M. Siegbahn ◽  
Ulf Wahlgren
Keyword(s):  
Water Exchange ◽  
Theoretical Study ◽  
Transition Period ◽  
Exchange Reactions ◽  
Divalent Ions

Reactivity and Infrared Spectroscopy of Gaseous Hydrated Trivalent Metal Ions

2008 ◽  
Vol 130 (28) ◽  
pp. 9122-9128 ◽  
Author(s):  
Matthew F. Bush ◽  
Richard J. Saykally ◽  
Evan R. Williams
Keyword(s):  
Infrared Spectroscopy ◽  
Metal Ions ◽  
Trivalent Metal ◽  
Trivalent Metal Ions

ChemInform Abstract: Transesterification of a Phosphate Diester by Divalent and Trivalent Metal Ions.

ChemInform ◽  
2010 ◽  
Vol 23 (19) ◽  
pp. no-no
Author(s):  
J. R. MORROW ◽  
L. A. BUTTREY ◽  
K. A. BERBACK
Keyword(s):  
Metal Ions ◽  
Trivalent Metal ◽  
Phosphate Diester ◽  
Trivalent Metal Ions

Gelation of xanthan with trivalent metal ions

1992 ◽  
Vol 18 (4) ◽  
pp. 243-251 ◽  
Author(s):  
Heike Nolte ◽  
Sabine John ◽  
Olav Smidsrød ◽  
Bjørn T. Stokke
Keyword(s):  
Metal Ions ◽  
Trivalent Metal ◽  
Trivalent Metal Ions

scholarly journals Removal of trivalent metal ions from aqueous solution via cross-flow ultrafiltration system using zeolite membranes

2016 ◽  
Vol 7 (1) ◽  
pp. 66-76 ◽  
Author(s):  
Ashim Kumar Basumatary ◽  
R. Vinoth Kumar ◽  
Kannan Pakshirajan ◽  
G. Pugazhenthi
Keyword(s):  
Aqueous Solution ◽  
Contact Angle ◽  
Metal Ions ◽  
Cross Flow ◽  
Zeolite Membrane ◽  
Trivalent Metal ◽  
Zeolite Membranes ◽  
Ceramic Support ◽  
Trivalent Metal Ions ◽  
Mcm 41

This study aimed to assess the performance of three zeolite membranes in the removal of trivalent metal ions from aqueous solution using a cross-flow mode of operation. Three types of zeolite membrane, MCM-41, MCM-48 and FAU, were prepared on a low-cost, circular ceramic support by hydrothermal treatment. The three zeolite membranes were characterized by using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and contact angle measurements. The XRD results confirmed the formation of zeolites. The deposition of zeolite on the ceramic support and hydrophilicity of zeolite membranes were monitored by FESEM and contact angle measurement, respectively. The pore size of the MCM-41, MCM-48 and FAU membrane was found to be 0.173 μm, 0.142 μm, and 0.153 μm, respectively, which was lower than that of the support (1.0 μm). The fabricated zeolite membranes were used to investigate the separation behavior of trivalent metal ions (Al3+ and Fe3+) from aqueous solution at various applied pressures. It was observed that an increase of applied pressure leads to a slight decrease in the removal efficiency. Among the various zeolite membranes, the FAU membrane showed the maximum rejection of 88% and 83% for Fe3+ and Al3+ separation, respectively.

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