Direct determination of the limiting high-pressure rate constants of the system fluorosulfate radical + fluorosulfate radical .dblharw. peroxydisulfuryl difluoride over the temperature range 293-381 K

1989 ◽  
Vol 93 (8) ◽  
pp. 3089-3094 ◽  
Author(s):  
C. J. Cobos ◽  
A. E. Croce de Cobos ◽  
H. Hippler ◽  
E. Castellano
Keyword(s):  
High Pressure ◽  
Rate Constants ◽  
Direct Determination ◽  
Temperature Range ◽  
Peroxydisulfuryl Difluoride

Temperature dependence of the limiting low- and high-pressure rate constants for the CH3O+NO2+He reaction over the 250–390 K temperature range

2000 ◽  
Vol 329 (3-4) ◽  
pp. 191-199 ◽  
Author(s):  
E. Martı́nez ◽  
J. Albaladejo ◽  
E. Jiménez ◽  
A. Notario ◽  
Y. Dı́az de Mera
Keyword(s):  
High Pressure ◽  
Temperature Dependence ◽  
Rate Constants ◽  
Temperature Range

The Rate-Constant for the Recombination of Methyl Radicals

1986 ◽  
Vol 39 (8) ◽  
pp. 1257 ◽  
Author(s):  
NL Arthur ◽  
JC Biordi
Keyword(s):  
Experimental Data ◽  
High Pressure ◽  
Rate Constant ◽  
Rate Constants ◽  
The Other ◽  
Methyl Radicals ◽  
Experimental Conditions ◽  
Temperature Range ◽  
Best Value ◽  
Limiting Value

Rate constants for the recombination of CH3 radicals have been measured by means of the rotating sector technique in the temperature range 373- 463 K, and at a pressure of 30 Torr . CH3 radicals were produced by the photolysis of acetone, and the experimental data were fitted to sector curves generated from Shepp's theory. The results give kb = (2.81�0.22)×1013 cm3 mol-1 s-1, which, under the chosen experimental conditions, is close to its high-pressure limiting value. A comparison is made with the other values of the rate constant reported in the literature, and a best value is suggested.

Direkte Bestimmung der Geschwindigkeitskonstanten des Durchtritts vom kleinen zum großen Hohlraumsystem im Molekularsieb Typ 13 X für Sr-und Ba-Ionen / Direct Determination of the Rate Constants for the Sr- and Ba-exchange Between the Small and Large Channels in LMS 13 X

1975 ◽  
Vol 30 (8) ◽  
pp. 951-954 ◽  
Author(s):  
K. Frohnecke ◽  
H. Fischbach
Keyword(s):  
Ion Exchange ◽  
Rate Constants ◽  
Diffusion Coefficients ◽  
Large Diameter ◽  
Direct Determination ◽  
Order Reaction ◽  
First Order Reaction ◽  
First Order ◽  
Total Exchange

Abstract Direct Determination of the Rate Constants for the Sr-and Ba-exchange Between the Small and Large Channels in LMS 13X The rate constants for the intracristalline Sr-and Ba-exchange between the small and large diameter channels of LMS 13X were measured. For this matter the method of interrupting the ion exchange was modified. It is assumed, that a first order reaction takes place. Using the rate constants and the diffusion coefficients, which were measured by Hoinkis and Levi, the total exchange of Sr 2+ and Ba 2+ could be calculated.

A nuclear magnetic resonance study of InBi single crystals

1980 ◽  
Vol 58 (6) ◽  
pp. 900-904
Author(s):  
N. Kaplan ◽  
S. N. Sharma ◽  
D. Ll. Williams
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Quadrupole Interaction ◽  
Direct Determination ◽  
Nuclear Magnetic Resonance Study ◽  
Magnetic Resonance Study ◽  
Temperature Range ◽  
Knight Shifts ◽  
Nuclear Magnetic

A nuclear magnetic resonance study of 115In in a single crystal of InBi has enabled the direct determination of the isotropic and anisotropic Knight shifts as well as the quadrupole interaction over the temperature range between 1.2 K and room temperature. An essentially linear variation with temperature is obtained for all three parameters with both the quadrupole interaction and the isotropic Knight shifts undergoing sign reversals in this temperature range. Comparisons are made with earlier nmr and time differential perturbed angular correlation (TDPAC) studies as well as with band structure predictions.

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