Experimental study of a closed system in the chlorine dioxide–iodine–ethyl acetoacetate–sulfuric acid oscillation reaction by UV–vis and online FTIR spectrophotometric methods

2010 ◽  
Vol 36 (5) ◽  
pp. 529-548 ◽  
Author(s):  
Laishun Shi ◽  
Fang Guo ◽  
Chunying Yan
Keyword(s):  
Experimental Study ◽  
Sulfuric Acid ◽  
Chlorine Dioxide ◽  
Closed System ◽  
Ethyl Acetoacetate ◽  
Spectrophotometric Methods ◽  
Oscillation Reaction ◽  
Online Ftir

scholarly journals Chlorine Dioxide-Iodide-Methyl Acetoacetate Oscillation Reaction Investigated by UV-Vis and Online FTIR Spectrophotometric Method

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Laishun Shi ◽  
Xiaomei Wang ◽  
Na Li ◽  
Jie Liu ◽  
Chunying Yan
Keyword(s):  
Induction Period ◽  
Chlorine Dioxide ◽  
Spectrophotometric Method ◽  
Ph Value ◽  
Great Influence ◽  
Reaction System ◽  
Oscillatory Behavior ◽  
Methyl Acetoacetate ◽  
Oscillation Reaction ◽  
Online Ftir

In order to study the chemical oscillatory behavior and mechanism of a new chlorine dioxide-iodide ion-methyl acetoacetate reaction system, a series of experiments were done by using UV-Vis and online FTIR spectrophotometric method. The initial concentrations of methyl acetoacetate, chlorine dioxide, potassium iodide, and sulfuric acid and the pH value have great influence on the oscillation observed at wavelength of 289 nm. There is a preoscillatory or induction period, and the amplitude and the number of oscillations are associated with the initial concentration of reactants. The equations for the triiodide ion reaction rate changing with reaction time and the initial concentrations in the oscillation stage were obtained. Oscillation reaction can be accelerated by increasing temperature. The apparent activation energies in terms of the induction period and the oscillation period were 26.02 KJ/mol and 17.65 KJ/mol, respectively. The intermediates were detected by the online FTIR analysis. Based upon the experimental data in this work and in the literature, a plausible reaction mechanism was proposed for the oscillation reaction.

TIMETAL 35A

Alloy Digest ◽  
2001 ◽  
Vol 50 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Sulfuric Acid ◽  
High Temperature ◽  
Nitric Acid ◽  
Physical Properties ◽  
Chlorine Dioxide ◽  
Heat Treating ◽  
Bend Strength ◽  
Temperature Performance ◽  
Sodium And Potassium

Abstract Titanium shows outstanding resistance to seawater and marine atmospheres. It is also resistant to attack by hot metallic chloride solutions, sodium and potassium hypochlorite, and chlorine dioxide. The metal is resistant to attack by hot nitric acid at concentrations up to 80% and is not attacked by sulfuric acid. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: TI-122. Producer or source: Timet.

scholarly journals PICKLING EXPERIMENTAL STUDY ON PREPARATION OF DIESEL OIL WITH PYROLYSIS OIL FROM WASTE RUBBER

2017 ◽  
Vol 1 ◽  
pp. 169
Author(s):  
Wang Lei ◽  
Wang Yun ◽  
Jin Jie
Keyword(s):  
Experimental Study ◽  
Sulfuric Acid ◽  
Hydrochloric Acid ◽  
Diesel Oil ◽  
Pyrolysis Oil ◽  
Waste Rubber ◽  
Pickling Process ◽  
Concentrated Sulfuric Acid ◽  
Better Than

The research has been done for removing asphaltene by pickling process of diesel oil from pyrolysis oil self-made by waste rubber in this paper, and the study showed that pickling effect of concentrated sulfuric acid was better than concentrated hydrochloric acid. The best pickling effect was found when the concentration of sulfuric acid was 18.4mol/L, acid to oil ratio, namely, the amount of concentration of sulfuric acid to the amount of diesel oil ratio, was 25%. This experiment proved that removing asphaltene by pickling process using concentrated sulfuric acid was remarkable.

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