scholarly journals Improvement of Physicochemical Properties of N-4472. Part III. VC/N-4472 Complex Formation and Self-association in Aqueous Solution

2003 ◽  
Vol 51 (1) ◽  
pp. 40-45 ◽  
Author(s):  
Koichi Itoh ◽  
Yuichi Tozuka ◽  
Toshio Oguchi ◽  
Keiji Yamamoto
Keyword(s):  
Aqueous Solution ◽  
Complex Formation ◽  
Physicochemical Properties ◽  
Self Association

Preparation and characterisation of vanadium pentoxide supported rhodium catalyst

1988 ◽  
Vol 46 ◽  
pp. 946-947
Author(s):  
A. Legrouri
Keyword(s):  
Aqueous Solution ◽  
Thermal Decomposition ◽  
Physicochemical Properties ◽  
Surface Area ◽  
Vanadium Pentoxide ◽  
High Purity ◽  
Gas Adsorption ◽  
Rhodium Catalyst ◽  
Optical Methods ◽  
Reducible Oxides

The industrial importance of metal catalysts supported on reducible oxides has stimulated considerable interest during the last few years. This presentation reports on the study of the physicochemical properties of metallic rhodium supported on vanadium pentoxide (Rh/V2O5). Electron optical methods, in conjunction with other techniques, were used to characterise the catalyst before its use in the hydrogenolysis of butane; a reaction for which Rh metal is known to be among the most active catalysts.V2O5 powder was prepared by thermal decomposition of high purity ammonium metavanadate in air at 400 °C for 2 hours. Previous studies of the microstructure of this compound, by HREM, SEM and gas adsorption, showed it to be non— porous with a very low surface area of 6m2/g3. The metal loading of the catalyst used was lwt%Rh on V2Q5. It was prepared by wet impregnating the support with an aqueous solution of RhCI3.3H2O.

Schiff base equilibria. II. Beryllium complexes of N-n-butylsalicylideneimine and the hydrolysis of the Be2+ ion

1965 ◽  
Vol 18 (5) ◽  
pp. 651 ◽  
Author(s):  
RW Green ◽  
PW Alexander
Keyword(s):  
Aqueous Solution ◽  
Schiff Base ◽  
Complex Formation ◽  
Distribution Coefficient ◽  
Dilute Aqueous Solution ◽  
The Stability ◽  
Ph Range ◽  
Hydrolysis Of ◽  
Beryllium Complexes ◽  
Equilibria In Aqueous Solution

The Schiff base, N-n-butylsalicylideneimine, extracts more than 99.8% beryllium into toluene from dilute aqueous solution. The distribution of beryllium has been studied in the pH range 5-13 and is discussed in terms of the several complex equilibria in aqueous solution. The stability constants of the complexes formed between beryllium and the Schiff base are log β1 11.1 and log β2 20.4, and the distribution coefficient of the bis complex is 550. Over most of the pH range, hydrolysis of the Be2+ ion competes with complex formation and provides a means of measuring the hydrolysis constants. They are for the reactions: Be(H2O)42+ ↔ 2H+ + Be(H2O)2(OH)2, log*β2 - 13.65; Be(H2O)42+ ↔ 3H+ + Be(H2O)(OH)3-, log*β3 -24.11.

Complex Formation in the Ternary System Tl(III)−CN-−Cl-in Aqueous Solution. A205Tl NMR Study

1996 ◽  
Vol 35 (24) ◽  
pp. 7074-7081 ◽  
Author(s):  
Katja E. Berg ◽  
Johan Blixt ◽  
Julius Glaser
Keyword(s):  
Aqueous Solution ◽  
Complex Formation ◽  
Ternary System ◽  
Nmr Study

Heat capacities, self-association and complex formation in alcohol–ester systems

1991 ◽  
Vol 87 (8) ◽  
pp. 1133-1139 ◽  
Author(s):  
Dinkar D. Deshpande ◽  
Donald Patterson ◽  
Lina Andreoli-Ball ◽  
Miguel Costas ◽  
Luis M. Trejo
Keyword(s):  
Complex Formation ◽  
Heat Capacities ◽  
Self Association

scholarly journals Chemical Properties of Element 105 in Aqueous Solution: Halide Complex Formation and Anion Exchange into Triisoctyl Amine

1989 ◽  
Vol 48 (3-4) ◽  
Author(s):  
J. V. Kratz ◽  
H. P. Zimmermann ◽  
U. W. Scherer ◽  
M. Schädel ◽  
W. Brüchle ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Complex Formation ◽  
Anion Exchange ◽  
Chemical Properties ◽  
Halide Complex
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