Speciation equilibria, clustering, and chemical-exchange kinetics in nonoxide glasses and melts. High-temperature phosphorus-31 NMR study of the system phosphorus-selenium

1993 ◽  
Vol 115 (11) ◽  
pp. 4747-4753 ◽  
Author(s):  
Robert Maxwell ◽  
Hellmut Eckert
Keyword(s):  
High Temperature ◽  
Chemical Exchange ◽  
Nmr Study ◽  
Exchange Kinetics

Effects of temperature on silicate melt sructure: A high temperature 29Si NMR study of Na2Si2O5

1997 ◽  
Vol 61 (13) ◽  
pp. 2569-2575 ◽  
Author(s):  
Hideki Maekawa ◽  
Toshio Yokokawa
Keyword(s):  
High Temperature ◽  
Silicate Melt ◽  
29Si Nmr ◽  
Nmr Study ◽  
Effects Of Temperature

A high-temperature high-resolution NMR study of 23Na, 27Al and 29Si in molten silicates

Nature ◽  
1985 ◽  
Vol 314 (6008) ◽  
pp. 250-252 ◽  
Author(s):  
J. F. Stebbins ◽  
J. B. Murdoch ◽  
E. Schneider ◽  
I. S. E. Carmichael ◽  
A. Pines
Keyword(s):  
High Temperature ◽  
High Resolution ◽  
Nmr Study ◽  
High Resolution Nmr

Time Resolved Very High Temperature NMR Study of the Cooling Process of CaO-Al2O3 Liquids

1998 ◽  
pp. 107-116 ◽  
Author(s):  
Dominique Massiot ◽  
Bruno Touzo ◽  
Dominique Trumeau ◽  
Ian Farnan ◽  
Jean-Claude Rifflet ◽  
...  
Keyword(s):  
High Temperature ◽  
Cooling Process ◽  
Time Resolved ◽  
Nmr Study ◽  
Very High

In Situ High Temperature Multinuclear NMR Study of Clinker Formation

1998 ◽  
pp. 47-55
Author(s):  
Laurent Bonafous ◽  
Catherine Bessada ◽  
Dominique Massiot ◽  
Jean-Pierre Coutures ◽  
Bruno LeRolland ◽  
...  
Keyword(s):  
High Temperature ◽  
Multinuclear Nmr ◽  
Nmr Study

29Si solid state NMR study of tricalcium silicate and cement hydration at high temperature

1993 ◽  
Vol 23 (5) ◽  
pp. 1169-1177 ◽  
Author(s):  
S. Masse ◽  
H. Zanni ◽  
J. Lecourtier ◽  
J.C. Roussel ◽  
A. Rivereau
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Nmr ◽  
Cement Hydration ◽  
Tricalcium Silicate ◽  
Nmr Study

High temperature 1 H NMR study of mesophase formation

Carbon ◽  
1981 ◽  
Vol 19 (2) ◽  
pp. 143-144 ◽  
Author(s):  
K. Miyazawa ◽  
T. Yokono ◽  
Y. Sanada ◽  
E. Yamada ◽  
S. Shimokawa
Keyword(s):  
High Temperature ◽  
H Nmr ◽  
Mesophase Formation ◽  
Nmr Study

43Ca NMR study of the doping effects in the high temperature superconductor (La1–xCax)(Ba1.75–xLa0.25+x)Cu3Oy

2001 ◽  
Vol 4 (11) ◽  
pp. 819-824
Author(s):  
Sébastien Marchand ◽  
Arlette Trokiner ◽  
Andrey Yakubovskii ◽  
Philippe Monod ◽  
Arkady Knizhnik ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Superconductor ◽  
Nmr Study ◽  
Doping Effects

Effects of High Temperature on Silicate Liquid Structure: A Multinuclear NMR Study

Science ◽  
1992 ◽  
Vol 255 (5044) ◽  
pp. 586-589 ◽  
Author(s):  
J. F. STEBBINS ◽  
I. FARNAN
Keyword(s):  
High Temperature ◽  
Liquid Structure ◽  
Silicate Liquid ◽  
Multinuclear Nmr ◽  
Nmr Study

109Ag NMR-Study of the Selective Solvation of the Ag+ Ion in Solvent Mixtures of Water and the Organic Solvents: Pyridine, Acetonitrile, and Dimethyl Sulfoxide

1984 ◽  
Vol 39 (1) ◽  
pp. 83-94 ◽  
Author(s):  
L. Guinand. K. L. Hobt. E. Mittermaier ◽  
E. Rößler ◽  
A. Schwenk ◽  
H. Schneider
Keyword(s):  
Chemical Shift ◽  
Dimethyl Sulfoxide ◽  
Organic Solvents ◽  
Mole Fraction ◽  
Chemical Exchange ◽  
Chemical Shifts ◽  
Equilibrium Constants ◽  
Solvent Mixtures ◽  
Nmr Study ◽  
Solvent Molecules

In mixtures of water (W) and one of the organic solvents pyridine, acetonitrile, and dimethyl sulfoxide (O), the silver ion forms the following solvate complexes: AgW2, AgWO, and Ag02. The chemical shift of 109Ag is strongly affected by the ligating solvent molecules, and replacing the ligand W by one of the three organic ligands yields a higher Larmor frequency. In solvent mixtures, only a single resonance line has been observed because of rapid chemical exchange. The measured chemical shifts in the range up to 400 ppm are mean values of the chemical shifts of the different solvate species in a given mixture, weighted with their relative concentrations. The 109Ag chemical shifts were determined for 0.05 to 0.15 molal solutions of AgNO3, as functions of the mole fractions of the solvent components. Using a Gaussian least squares fitting routine, the individual chemical shifts of the Ag+ solvate complexes and the corresponding equilibrium constants were determined. This fit was successful for the whole mole fraction range of DMSO, while in the solvent systems with acetonitrile and with pyridine at higher concentrations of the organic component the chemical shift is influenced by more than two solvent molecules. In these cases equilibrium constants were calculated from chemical shift data for solutions of low mole fraction of acetonitrile and pyridine.

Synthesis, Variable Temperature and Pressure 17O NMR Study of Bis(alkylamide) Derivatives of [(Gd-DTPA)(H2O)]2 − An Assessment of the Substitution Effect on Water Exchange Kinetics

2002 ◽  
Vol 2002 (10) ◽  
pp. 2686-2693 ◽  
Author(s):  
François Botteman ◽  
Gaëlle M. Nicolle ◽  
Luce Vander Elst ◽  
Sophie Laurent ◽  
André E. Merbach ◽  
...  
Keyword(s):  
Water Exchange ◽  
Variable Temperature ◽  
Substitution Effect ◽  
17O Nmr ◽  
Nmr Study ◽  
Exchange Kinetics ◽  
Temperature And Pressure ◽  
Derivatives Of
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