Isotope exchange reaction between tritiated water and hydrogen on SiC

2003 ◽  
Vol 323 (1) ◽  
pp. 138-143 ◽  
Author(s):  
K. Katayama ◽  
M. Nishikawa ◽  
T. Takeishi
Keyword(s):  
Exchange Reaction ◽  
Isotope Exchange ◽  
Tritiated Water ◽  
Isotope Exchange Reaction

Isotope exchange reactions of the hydrogen H-5 of selected pyrimidine derivatives and the preparation of tritium-labeled pyrimidines

2011 ◽  
Vol 76 (12) ◽  
pp. 1567-1577 ◽  
Author(s):  
Martin Dračínský ◽  
Petr Jansa ◽  
Tomáš Elbert
Keyword(s):  
Exchange Reaction ◽  
Isotope Exchange ◽  
Reaction Rate ◽  
Tritiated Water ◽  
Solvent Composition ◽  
Exchange Reactions ◽  
Pyrimidine Derivatives ◽  
Isotope Exchange Reaction ◽  
Nmr Techniques ◽  
Tracer Experiments

The hydrogen-to-deuterium isotope exchange reaction of hydrogen in position 5 of pyrimidine derivatives was studied using NMR techniques. The dependence of the reaction rate on the pH and on the solvent composition was explored. In tracer experiments using tritiated water, the application of this exchange reaction was tested for the preparation of pyrimidine derivatives labeled by tritium.

Rate of Isotope Exchange Reaction Between Tritiated Water in a Gas Phase and Water on the Surface of Piping Materials

2001 ◽  
Vol 39 (2P1) ◽  
pp. 189-197 ◽  
Author(s):  
Nobuyuki Nakashio ◽  
Junya Yamaguchi ◽  
Ryusuke Kobayashi ◽  
Masabumi Nishikawa
Keyword(s):  
Gas Phase ◽  
Exchange Reaction ◽  
Isotope Exchange ◽  
Tritiated Water ◽  
Isotope Exchange Reaction

Isotope exchange reaction on Li2ZrO3

1997 ◽  
Vol 250 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Atsushi Baba ◽  
Masabumi Nishikawa ◽  
Takanori Eguchi
Keyword(s):  
Exchange Reaction ◽  
Isotope Exchange ◽  
Isotope Exchange Reaction

Hydrogen isotope exchange between D2 and H2O catalyzed by platinum plate

1989 ◽  
Vol 67 (5) ◽  
pp. 857-861 ◽  
Author(s):  
Shin-Ichi Miyamoto ◽  
Tetsuo Sakka ◽  
Matae Iwasaki
Keyword(s):  
Kinetic Model ◽  
Exchange Reaction ◽  
Hydrogen Isotope ◽  
Isotope Exchange ◽  
Reaction Rate ◽  
Hydrogen Adsorption ◽  
Platinum Catalyst ◽  
Isotope Exchange Reaction ◽  
Hydrogen Isotope Exchange ◽  
Supported Platinum

The reaction rate of hydrogen isotope exchange between D2 and H2O catalyzed by platinum plate is studied. The exchange reaction is described with the kinetic model which is the modification of that for the exchange reaction catalyzed by alumina-supported platinum catalyst. For the comparison of experimental results with this model relative amount of the number of sites for hydrogen adsorption was estimated from the initial rate of hydrogen isotope exchange between H2 and D2 on the same surface. The results show that the kinetic model is applicable for the plate catalyst if the number of the sites for hydrogen absorption, which is very sensitive to the surface state of the catalyst, was estimated not from the macroscopic surface area but from our scheme. Keywords: hydrogen isotope exchange reaction, platinum plate as catalyst.

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