Uphill and selective transport of alkali and alkali earth metal ions through 2,3-epithiopropyl methacrylate–2-acrylamide-2-methyl propane sulfonic acid copolymer membranes

1990 ◽  
Vol 41 (1112) ◽  
pp. 2869-2884 ◽  
Author(s):  
Takamasa Nonaka ◽  
Hirofumi Ogawa ◽  
Hiroaki Egawa
Keyword(s):  
Metal Ions ◽  
Sulfonic Acid ◽  
Earth Metal ◽  
Alkali Earth Metal ◽  
Alkali Earth ◽  
Selective Transport ◽  
Acid Copolymer

scholarly journals SBA-15 with Crystalline Walls Produced via Thermal Treatment with the Alkali and Alkali Earth Metal Ions

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5270
Author(s):  
Sung Soo Park ◽  
Sang-Wook Chu ◽  
Liyi Shi ◽  
Shuai Yuan ◽  
Chang-Sik Ha
Keyword(s):  
Metal Ions ◽  
Pore Size ◽  
Metal Ion ◽  
Pore Diameter ◽  
Earth Metal ◽  
Silica Matrix ◽  
Alkali Earth Metal ◽  
Alkali Earth ◽  
Large Pore ◽  
Large Pore Size

Crystalline walled SBA-15 with large pore size were prepared using alkali and alkali earth metal ions (Na+, Li+, K+ and Ca2+). For this work, the ratios of alkali metal ions (Si/metal ion) ranged from 2.1 to 80, while the temperatures tested ranged from 500 to 700 °C. The SBA-15 prepared with Si/Na+ ratios ranging from 2.1 to 40 at 700 °C exhibited both cristobalite and quartz SiO2 structures in pore walls. When the Na+ amount increased (i.e., Si/Na increased from 80 to 40), the pore size was increased remarkably but the surface area and pore volume of the metal ion-based SBA-15 were decreased. When the SBA-15 prepared with Li+, K+ and Ca2+ ions (Si/metal ion = 40) was thermally treated at 700 °C, the crystalline SiO2 of quartz structure with large pore diameter (i.e., 802.5 Å) was observed for Ca+2 ion-based SBA-15, while no crystalline SiO2 structures were observed in pore walls for both the K+ and Li+ ions treated SBA-15. The crystalline SiO2 structures may be formed by the rearrangement of silica matrix when alkali or alkali earth metal ions are inserted into silica matrix at elevated temperature.

Ab initio study of NMR shielding of alkali earth metal ions in water complexes and magnetic moments of alkali earth metal nuclei

2013 ◽  
Vol 588 ◽  
pp. 57-62 ◽  
Author(s):  
Andrej Antušek ◽  
Pawel Rodziewicz ◽  
Dariusz Ke¸dziera ◽  
Anna Kaczmarek-Ke¸dziera ◽  
Michał Jaszuński
Keyword(s):  
Metal Ions ◽  
Ab Initio ◽  
Magnetic Moments ◽  
Earth Metal ◽  
Ab Initio Study ◽  
Alkali Earth Metal ◽  
Alkali Earth

Spectrophotometric studies of alkali and alkali earth metal ions complexes of mono amino derivative of calix[4]arene

2010 ◽  
Vol 55 (3) ◽  
pp. 434-437 ◽  
Author(s):  
Farrokh Gharib ◽  
Noushin Osouleddini ◽  
Karim Zare ◽  
Saeed Taghvaei-Ganjali
Keyword(s):  
Metal Ions ◽  
Earth Metal ◽  
Amino Derivative ◽  
Alkali Earth Metal ◽  
Alkali Earth

The effects of alkali-earth metal ions on the crystalline state of ZnO

1981 ◽  
Vol 16 (11) ◽  
pp. 3227-3229 ◽  
Author(s):  
F. Hayashi ◽  
T. Uematsu ◽  
H. Hashimoto
Keyword(s):  
Metal Ions ◽  
Crystalline State ◽  
Earth Metal ◽  
Alkali Earth Metal ◽  
Alkali Earth

scholarly journals Study of electrical conductance of Albumine in water and it’s reaction with alkali metal ions

2019 ◽  
Vol 24 (6) ◽  
pp. 33
Author(s):  
Omar A. Shareef
Keyword(s):  
Metal Ions ◽  
Specific Conductivity ◽  
Electrical Conductance ◽  
Earth Metal ◽  
Buffer Solution ◽  
Metal Chlorides ◽  
Alkali Earth Metal ◽  
Alkali Earth ◽  
Ph Values ◽  
Straight Lines

Interactions of  bovine serum albumin with some alkali earth metal ions  Na+, K+, Mg+2,Ca+2,were investigated to give the effect of metal molecular structure on complex formation of metal-protein molecules. To elucidate the interactions, the protein-metal combination in aqueous buffer solution of pH values (4,7and8.2) and at37°Cwere investigated using conductivity, straight lines from the plot of specific conductivity against its concentration were gives at pH 7 which is chosen because it is near the pH of blood serum. Besides, the conductivities of albumin with each of solutions of some alkali earth metal chlorides (NaCl, KCl, MgCl2, CaCl2) at pH7 were measured. The plot of specific conductivity against each mixture solution were discussed.   http://dx.doi.org/10.25130/tjps.24.2019.106

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