scholarly journals Reaction Mechanism in Aromatic Heterocyclic Compounds. X. Kinetics of the Reaction of Carcinogenic 4-Nitroquinoline 1-Oxide and Its Derivatives with Sodium Ethoxide

1969 ◽  
Vol 17 (5) ◽  
pp. 987-993 ◽  
Author(s):  
TOSHIHIKO OKAMOTO ◽  
MASATAKA MOCHIZUKI
Keyword(s):  
Reaction Mechanism ◽  
Heterocyclic Compounds ◽  
Sodium Ethoxide ◽  
Kinetics Of ◽  
Aromatic Heterocyclic

The kinetics of hydration of tricalcium silicate

1970 ◽  
Vol 48 (21) ◽  
pp. 3291-3299 ◽  
Author(s):  
K. G. McCurdy ◽  
B. P. Erno
Keyword(s):  
Reaction Mechanism ◽  
Intermediate Product ◽  
Activation Energies ◽  
Tricalcium Silicate ◽  
Rate Data ◽  
Large Excess ◽  
First Order ◽  
Kinetics Of ◽  
Subsequent Decomposition

An investigation has been made of the kinetics of hydration of tricalcium silicate at several temperatures in a large excess of water in the presence of various added ions. The rate data have been interpreted by a reaction mechanism which involves: (a) the first order hydration of tricalcium silicate to form an intermediate product, 1.5CaO•SiO2, which can react by two pathways, (b) the direct first order decomposition of intermediate, 1.5CaO•SiO2, to form lime and silica or (b′) complexing of intermediate with silica and subsequent decomposition to form lime and silica. This reaction mechanism predicts the rate of production of base during the hydration. The effect of various added ions is interpreted in terms of the proposed mechanism.Rate constants and activation energies for the various steps in the proposed mechanism are reported.

scholarly journals Conversion of sulphur compounds into light gas oil: I. Kinetics of the conversion of model compounds

2002 ◽  
Vol 56 (2) ◽  
pp. 68-75
Author(s):  
Jasna Jankovic ◽  
Dejan Skala
Keyword(s):  
Chemical Industry ◽  
Heterocyclic Compounds ◽  
Published Data ◽  
Gas Oil ◽  
Model Compounds ◽  
Sulphur Compounds ◽  
Middle Fraction ◽  
Light Gas Oil ◽  
Reactor Calculation ◽  
Kinetics Of

The problem of sulfur compounds conversion, particularly heterocyclic compounds, from the middle fraction of crude oil (light gas oil) was analyzed and will be published in several articles in the Chemical Industry Journal. Published data in the literature, covering the conversion of tiophene, benzothiophene and dibenzothiophene are presented in the first paper of this series with the goal of comparing and critically analyzing their usage for reactor calculation.

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