Physico-chemical study on the state of cobalt in a precipitated cobalt-aluminum oxide system

2002 ◽  
Vol 4 (17) ◽  
pp. 4236-4243 ◽  
Author(s):  
Alexander A. Khassin ◽  
Vladimir F. Anufrienko ◽  
Vladimir N. Ikorskii ◽  
Lyudmila M. Plyasova ◽  
Galina N. Kustova ◽  
...  
Keyword(s):  
Aluminum Oxide ◽  
Chemical Study ◽  
Oxide System ◽  
The State ◽  
Physico Chemical

Physico-chemical study of aqueous solutions of electrolytes in mixed solvents

2006 ◽  
Vol 38 (11) ◽  
pp. 1474-1478 ◽  
Author(s):  
Monimul Huque ◽  
Iqbal Ahmed Siddiquey ◽  
Md. Nizam Uddin
Keyword(s):  
Aqueous Solutions ◽  
Mixed Solvents ◽  
Chemical Study ◽  
Physico Chemical ◽  
Solutions Of Electrolytes

Physico-chemical study of Dead Sea waters

1982 ◽  
Vol 11 (5) ◽  
pp. 477-492 ◽  
Author(s):  
Boris S Krumgalz ◽  
Frank J Millero
Keyword(s):  
Chemical Study ◽  
Dead Sea ◽  
Physico Chemical

scholarly journals A physico-chemical study of triple helix formation by an oligodeoxythymidylate with N3'->P5' phosphoramidate linkages

1997 ◽  
Vol 25 (9) ◽  
pp. 1782-1787 ◽  
Author(s):  
B.-w. Zhou-Sun ◽  
J. Liquier ◽  
E. Taillandier ◽  
J.-s. Sun ◽  
T. Garestier ◽  
...  
Keyword(s):  
Triple Helix ◽  
Chemical Study ◽  
Helix Formation ◽  
Physico Chemical ◽  
Triple Helix Formation

A physico-chemical study on the interaction between papaverine and natural and modified β-cyclodextrins

1998 ◽  
Vol 160 (2) ◽  
pp. 163-172 ◽  
Author(s):  
C.A Ventura ◽  
G Puglisi ◽  
M Zappalà ◽  
G Mazzone
Keyword(s):  
Chemical Study ◽  
Physico Chemical

The Toxic Action of Copper and Mercury Salts Both Separately and When Mixed on the Harpacticid Copepod, Nitocra Spinipes (Boeck)

1948 ◽  
Vol 25 (3) ◽  
pp. 270-275
Author(s):  
H. BARNES ◽  
F. A. STANBURY
Keyword(s):  
Sea Water ◽  
The State ◽  
Toxic Action ◽  
Chemical Data ◽  
Physico Chemical ◽  
Mercury Salts

1. The results are given of the poisoning of Nitocra spinipes (Boeck) by copper and mercury salts used together and separately. 2. The state of copper and mercuric salts in sea water is examined using the available physico-chemical data. 3. The results suggest that the two poisons act in a different manner and possible reasons for this are considered. 4. The striking synergic effects obtained when the two metals are used together are considered to support the suggestion in 3 above and various possible explanations, both biological and chemical for this synergism, are examined.

scholarly journals Nickel(II) cyclohexylethyl-dithiocarbamate P-donor ligands in the coordination sphere

2004 ◽  
Vol 69 (12) ◽  
pp. 1053-1061 ◽  
Author(s):  
Josef Husárek ◽  
Richard Pstorek ◽  
Michal Malon ◽  
Zedenek Sindalar ◽  
Marek Pavlícek
Keyword(s):  
Thermal Analysis ◽  
Nmr Spectroscopy ◽  
Elemental Analysis ◽  
1H Nmr Spectroscopy ◽  
Chemical Study ◽  
Donor Ligands ◽  
Conductivity Measurements ◽  
Physico Chemical ◽  
Square Planar ◽  
Vis Spectroscopy

A series of new Ni(II) dithiocarbamate compounds of the composition [NiX(cetdtc)(PR3)](X = Cl, Br, I, NCS; cetdtc = cyclohexylethyldithiocarbamate; R = phenyl, n-butyl) has been synthesized. All the isolated complexes have been characterized by elemental analysis, IR and UV/VIS spectroscopy, 31P{1H}-NMR spectroscopy, thermal analysis magnetochemical and conductivity measurements. On the basis of the results of the physico-chemical study, all complexes are diamagnetic, non-electrolytes with a square-planar NiS2PX chromophore.

scholarly journals Dysprosium Removal from Water Using Active Carbons Obtained from Spent Coffee Ground

2019 ◽  
Author(s):  
Lorena Alcaraz ◽  
María Esther Escudero ◽  
Francisco J. Alguacil ◽  
Irene Llorente ◽  
Ana Urbieta ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Activated Carbons ◽  
Chemical Study ◽  
Bet Surface Area ◽  
Maximum Adsorption Capacity ◽  
Solution Ph ◽  
Microporous Material ◽  
Physico Chemical ◽  
Spent Coffee Ground ◽  
Coffee Ground

This paper describes the physico-chemical study of the adsorption of dysprosium (Dy3+) in aqueous solution onto two types of activated carbons synthesized from spent coffee ground. KOH activated carbon is a microporous material with a specific BET surface area of 2330 m2·g-1 and pores with a diameter of 3.2 nm. Carbon activated with water vapor and N2 is a solid mesoporous, with pores of 5.7 nm in diameter and a specific surface of 982 m2·g-1. A significant dependence of the adsorption capacity on the solution pH was found, while it does not depend significantly neither on the dysprosium concentration nor on the temperature. A maximum adsorption capacity of 31.26 mg·g-1 and 33.52 mg·g-1 for the chemically and physically activated carbons, respectively, were found. In both cases, the results obtained from adsorption isotherms and kinetic study were better fit to a Langmuir model and a pseudo-second-order kinetics. In addition, thermodynamic results indicate that dysprosium adsorption onto both activated carbons is an exothermic, spontaneous and favorable process.

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