ChemInform Abstract: ACTIVATION VOLUME FOR THE REACTION OF NITRILOTRIACETATODIOXOVANADATE(V) WITH HYDROGEN PEROXIDE AS STUDIED BY A HIGH-PRESSURE STOPPED-FLOW TECHNIQUE

1979 ◽  
Vol 10 (44) ◽  
Author(s):  
S. FUNAHASHI ◽  
K. ISHIHARA ◽  
M. TANAKA
Keyword(s):  
Hydrogen Peroxide ◽  
High Pressure ◽  
Activation Volume ◽  
Stopped Flow

High-pressure investigations on Urea hydrogen peroxide

2021 ◽  
pp. 139230
Author(s):  
Jingkai Bi ◽  
Yurui Tao ◽  
JunYing Hu ◽  
Hongbo Wang ◽  
Mi Zhou
Keyword(s):  
Hydrogen Peroxide ◽  
High Pressure ◽  
Urea Hydrogen Peroxide

High‐pressure stopped‐flow apparatus up to 3 kbar

1979 ◽  
Vol 50 (9) ◽  
pp. 1104-1107 ◽  
Author(s):  
Muneo Sasaki ◽  
Fujitsugu Amita ◽  
Jiro Osugi
Keyword(s):  
High Pressure ◽  
Stopped Flow ◽  
Flow Apparatus

Graphitization of diamond at zero pressure and at a high pressure

1972 ◽  
Vol 328 (1574) ◽  
pp. 413-427 ◽  
Keyword(s):  
High Pressure ◽  
Activation Volume ◽  
Activation Energies ◽  
Single Atom ◽  
Diamond Surface ◽  
Temperature Range ◽  
Natural Diamonds ◽  
Rate Controlling Step

Natural diamonds have been heated in the temperature range of 1850 to 2000 °C at zero pressure and the rates at which diamond transforms to graphite measured. For {111} and {110} surfaces activation energies of 253+18 and 174+12 kcal mol -1 (1159 + 75 and 728 + 50 kJ/mol) respectively have been obtained. Diamonds have also been heated in the temperature range of 1950 to 2200 °C under a pressure of 48 + 3 kbar (4.8 + 0.3 GPa) and an activation volume of about 10 cm 3 mol -1 obtained for both {111} and {110} surfaces. It is proposed that the rate controlling process in the graphitization of diamond is the detachment of a single atom from the diamond surface. This is contrary to previous proposals in which the detachment of groups of atoms have been considered to be the rate-controlling process. In the present work, it is suggested that the rate-controlling step for graphitization is the detachment of a triply bonded atom from a {111} surface and of a doubly bonded atom from a {110} surface.

Formation kinetics of peroxovanadium(V) complexes in strongly acidic media as studied by a high-pressure stopped-flow technique

1989 ◽  
Vol 157 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Shigenobu Funahashi ◽  
Koji Ishihara ◽  
Masahiko Inamo† ◽  
Motoharu Tanaka
Keyword(s):  
High Pressure ◽  
Stopped Flow ◽  
Acidic Media ◽  
Formation Kinetics ◽  
Kinetics Of
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