Kinetics of pyrite oxidation in sodium hydroxide solutions

1995 ◽  
Vol 26 (4) ◽  
pp. 677-685 ◽  
Author(s):  
V. S. T. Ciminelli ◽  
K. Osseo-Asare
Keyword(s):  
Sodium Hydroxide ◽  
Pyrite Oxidation ◽  
Kinetics Of

scholarly journals Kinetics of Substituted Bis- and Mono-azo Dyes as Corrosion Inhibitors for Aluminium in Hydrochloric Acid and Sodium Hydroxide Solutions

1999 ◽  
Vol 23 (7) ◽  
pp. 408-409
Author(s):  
Loutfy H. Madkour ◽  
R. M. Issa ◽  
I. M. El-Ghrabawy
Keyword(s):  
Hydrochloric Acid ◽  
Sodium Hydroxide ◽  
Azo Dyes ◽  
Thermodynamic Model ◽  
Corrosion Inhibitors ◽  
Kinetics Of ◽  
Alkaline Corrosion

This investigation is designed to apply an advanced kinetic–thermodynamic model on the data obtained from acidic and alkaline corrosion of aluminium using bis- and mono-azo dyes as corrosion inhibitors.

Curing kinetics of amine and sodium hydroxide catalyzed phenol-formaldehyde resins

2007 ◽  
Vol 90 (1) ◽  
pp. 229-236 ◽  
Author(s):  
N. Gabilondo ◽  
M. López ◽  
J. A. Ramos ◽  
J. M. Echeverría ◽  
I. Mondragon
Keyword(s):  
Sodium Hydroxide ◽  
Phenol Formaldehyde ◽  
Curing Kinetics ◽  
Kinetics Of

Dissolution kinetics of vanadium trioxide at high pressure in sodium hydroxide–oxygen systems

2011 ◽  
Vol 105 (3-4) ◽  
pp. 350-354 ◽  
Author(s):  
Shuang Qiu ◽  
Chang Wei ◽  
Minting Li ◽  
Xuejiao Zhou ◽  
Chunxiong Li ◽  
...  
Keyword(s):  
High Pressure ◽  
Sodium Hydroxide ◽  
Dissolution Kinetics ◽  
Vanadium Trioxide ◽  
Kinetics Of

Kinetics of corrosion action of aluminum in sodium hydroxide solution

2013 ◽  
Vol 25 (7) ◽  
pp. 1701-1704 ◽  
Author(s):  
张豪 Zhang Hao ◽  
邢丕峰 Xing Pifeng ◽  
李萍 Li Ping ◽  
赵利平 Zhao Liping ◽  
杨蒙生 Yang Mengsheng ◽  
...  
Keyword(s):  
Sodium Hydroxide ◽  
Sodium Hydroxide Solution ◽  
Hydroxide Solution ◽  
Kinetics Of

Equilibrium and Kinetics of the Extraction of Gallium(III) from Sodium Hydroxide Solutions with 7-Dodecenyl-8-quinolinol (Kelex 100)

1993 ◽  
Vol 58 (5) ◽  
pp. 1093-1102 ◽  
Author(s):  
Aleksandra A. Mitrovic ◽  
Slobodan K. Milonjic ◽  
Zoja E. Ilic ◽  
Radomir V. Stevanovic
Keyword(s):  
Sodium Hydroxide ◽  
Sodium Hydroxide Solution ◽  
Aqueous Sodium Hydroxide ◽  
Sodium Concentration ◽  
Extraction Kinetics ◽  
Aqueous Sodium Hydroxide Solution ◽  
Ph Values ◽  
Constant Ph ◽  
Equilibrium And Kinetics ◽  
Kinetics Of

The influence of hydroxide ions concentration of the aqueous sodium hydroxide solution, at constant sodium concentrations, on the gallium extraction with Kelex 100 was examined in the hydroxide concentration range from 0.02 to 0.5 mol dm-3. The percentage of extracted gallium increases from 51% to 98% within the investigated hydroxide concentration range. The influence of sodium concentrations (from 1 to 6 mol dm-3) on the gallium extraction was also studied at constant pH values. The decrease of extracted gallium is slight for the sodium concentration up to 3 mol dm-3, while for the higher ones it is pronounced. The extraction kinetics was studied using a mixer-type apparatus. The rate expression of the extraction reaction of gallium with Kellex 100, for both lower and higher hydroxide concentrations are ascertained.

AN OPTICAL METHOD TO STUDY THE KINETICS OF CLEANING MILK DEPOSITS BY SODIUM HYDROXIDE

1982 ◽  
Vol 5 (3) ◽  
pp. 131-143 ◽  
Author(s):  
THIERRY GALLOT-LAVALLEE ◽  
MARC LALANDE ◽  
GEORGES CORRIEU
Keyword(s):  
Sodium Hydroxide ◽  
Optical Method ◽  
Kinetics Of

Carbohydrates in alkaline systems. II. Kinetics of the transformation and degradation reactions of cellobiose, cellobiulose, and 4-O-β-D-glucopyranosyl-D-mannose in 1 M sodium hydroxide at 22 °C

1969 ◽  
Vol 47 (21) ◽  
pp. 3957-3964 ◽  
Author(s):  
Donald J. MacLaurin ◽  
John W. Green
Keyword(s):  
Sulfuric Acid ◽  
Sodium Hydroxide ◽  
Column Chromatography ◽  
Rate Constants ◽  
Reaction Rate ◽  
Reaction System ◽  
Reaction Rate Constants ◽  
Degradation Reactions ◽  
Fructose 2 ◽  
Kinetics Of

Rates of isomerization, epimerization, and degradation reactions were measured for cellobiose (7), cellobiulose (8), and 4-O-β-D-glucopyranosyl-D-mannose (9) at 0.001 M in 1 M NaOH under N2 in the dark at 22 °C. Reaction system resolution was by column chromatography on anion resins in the borate form. Assay for D-glucose (1), D-fructose (2), D-mannose (3), and 7,8, and 9 was by continuous automated colorimetry of column effluent with orcinol–sulfuric acid as reagent. Reaction rate constants (h−1) found: k78 0.078, k79 0.0005, k7,10 0.002, k87 0.022, k89 0.003 k81 0.065, k8,12 0.023, k97 0.002, k98 0.013, k9,11 0.006 where 10,11, and 12 are other products than 1,2,3,7,8, and 9. Details for preparation of 8 and 9 are given.

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