Kinetics of growth and dissolution of sodium chlorate, in diffusion and convection regimes

1978 ◽  
Vol 43 (5) ◽  
pp. 640-642 ◽  
Author(s):  
B. Simon
Keyword(s):  
Sodium Chlorate ◽  
Diffusion And Convection ◽  
Kinetics Of

The rôle of diffusion during catalysis by colloidal metals and similar substances.

1905 ◽  
Vol 74 (497-506) ◽  
pp. 356-369 ◽  
Author(s):  
Henry J. S. Sand ◽  
John Henry Poynting
Keyword(s):  
Chemical Reactions ◽  
Chemical Equilibrium ◽  
Heterogeneous Systems ◽  
Heterogeneous Reactions ◽  
Diffusion And Convection ◽  
Two Phases ◽  
Special Instance ◽  
Kinetics Of

In a paper on reaction-velocities in heterogeneous systems, Nernst has recently put forward the view that all chemical reactions taking place on the boundary of two phases proceed to equilibrium practically instantaneously, and that the velocities actually observed are simply those with which diffusion and convection renew the reacting material at the boundary. As a special instance of heterogeneous reactions, he mentions catalytic decompositions due to finely divided particles, such as colloidal metals, and he believes it probable that the kinetics of these reactions can be deduced from the assumption that chemical equilibrium remains permanently established on the surface of the particles.

Crystal Growth, Dissolution, and Agglomeration Kinetics of Sodium Chlorate

2021 ◽  
Author(s):  
Antonios A. Fytopoulos ◽  
Michail E. Kavousanakis ◽  
Tom Van Gerven ◽  
Andreas G. Boudouvis ◽  
Georgios D. Stefanidis ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Sodium Chlorate ◽  
Kinetics Of

Kinetics of leaching selenium from Ni–Mo ore smelter dust using sodium chlorate in a mixture of hydrochloric and sulfuric acids

2010 ◽  
Vol 104 (1) ◽  
pp. 76-80 ◽  
Author(s):  
Xiaochuan Hou ◽  
Liansheng Xiao ◽  
Congjie Gao ◽  
Qixiu Zhang ◽  
Li Zeng
Keyword(s):  
Sodium Chlorate ◽  
Hydrochloric And Sulfuric Acids ◽  
Kinetics Of

Kinetics of the Reaction for Generation of Chlorine Dioxide from Sodium Chlorate and Hydrochloric Acid

2013 ◽  
Vol 634-638 ◽  
pp. 546-550
Author(s):  
Xin Jie Li ◽  
Dan Dan Jiang ◽  
Yue Jun Zhang
Keyword(s):  
Hydrochloric Acid ◽  
Chlorine Dioxide ◽  
Reaction Rate ◽  
Initial Rate ◽  
Reaction System ◽  
Sodium Chlorate ◽  
Second Order ◽  
First Order ◽  
Mixed Order ◽  
Kinetics Of

Based on the mechanism of ClO3-/Cl-reaction system, the kinetics for reaction of sodium chlorate and hydrochloric acid to generate ClO2was studied. The rate equation of this reaction system was deduced and simplified as a formula with mixed-order (combination of first-order and second-order) towards ClO3-. This rate formula indicates that the initial rate of the reaction is the first-order with respect to ClO3-, and the reaction rate is the second-order with respect to ClO3-when [ClO3-] becomes close to zero. The rate constants of the first-order were determined as 0.0168s-1(30°C), 0.0221s-1(40°C), and 0.0279s-1(50°C), respectively, and that of the second-order were obtained for 0.0019L·mol-1·s-1(30°C), 0.0028L·mol-1·s-1(40°C), and 0.0060L·mol-1·s-1(50°C), respectively. The results of statistic test prove that the rate formula obtained in this work is credible.

Direct observations of radiation-enhanced transformations in glass

1983 ◽  
Vol 41 ◽  
pp. 354-355
Author(s):  
J. F. DeNatale ◽  
D. G. Howitt
Keyword(s):  
Glass Matrix ◽  
Diffusion Mechanism ◽  
Bubble Formation ◽  
Silicate Glasses ◽  
Phase Decomposition ◽  
Direct Observations ◽  
Thin Foils ◽  
Oxygen Bubble ◽  
Electron Energy Loss ◽  
Kinetics Of

The electron irradiation of silicate glasses containing metal cations produces various types of phase separation and decomposition which includes oxygen bubble formation at intermediate temperatures figure I. The kinetics of bubble formation are too rapid to be accounted for by oxygen diffusion but the behavior is consistent with a cation diffusion mechanism if the amount of oxygen in the bubble is not significantly different from that in the same volume of silicate glass. The formation of oxygen bubbles is often accompanied by precipitation of crystalline phases and/or amorphous phase decomposition in the regions between the bubbles and the detection of differences in oxygen concentration between the bubble and matrix by electron energy loss spectroscopy cannot be discerned (figure 2) even when the bubble occupies the majority of the foil depth.The oxygen bubbles are stable, even in the thin foils, months after irradiation and if van der Waals behavior of the interior gas is assumed an oxygen pressure of about 4000 atmospheres must be sustained for a 100 bubble if the surface tension with the glass matrix is to balance against it at intermediate temperatures.

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