Ion confinement in the collision cell of a multiquadrupole mass spectrometer: access to chemical equilibrium and determination of kinetic and thermodynamic parameters of an ion-molecule reaction

1989 ◽  
Vol 61 (13) ◽  
pp. 1447-1453 ◽  
Author(s):  
Claude. Beaugrand ◽  
Daniel. Jaouen ◽  
Helene. Mestdagh ◽  
Christian. Rolando
Keyword(s):  
Thermodynamic Parameters ◽  
Mass Spectrometer ◽  
Chemical Equilibrium ◽  
Collision Cell ◽  
Kinetic And Thermodynamic Parameters ◽  
Molecule Reaction

Pyrolysis of ficus nitida wood: Determination of kinetic and thermodynamic parameters

Fuel ◽  
2021 ◽  
Vol 283 ◽  
pp. 119253
Author(s):  
A. Tabal ◽  
A. Barakat ◽  
A. Aboulkas ◽  
K. El harfi
Keyword(s):  
Thermodynamic Parameters ◽  
Kinetic And Thermodynamic Parameters ◽  
Ficus Nitida

scholarly journals Kinetics and Thermodynamics of Thermal Degradation of Different Starches and Estimation the OH Group and H2O Content on the Surface by TG/DTG-DTA

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 357 ◽  
Author(s):  
Marita Pigłowska ◽  
Beata Kurc ◽  
Łukasz Rymaniak ◽  
Piotr Lijewski ◽  
Paweł Fuć
Keyword(s):  
Thermal Decomposition ◽  
Thermodynamic Parameters ◽  
Kinetic Method ◽  
Hydroxyl Groups ◽  
Activation Process ◽  
Kinetic And Thermodynamic Parameters ◽  
Rate Form ◽  
Low Shear Stress ◽  
Kinetics Of

The main aim of this study is to estimate the kinetic and thermodynamic parameters of thermal decomposition of starches by the Coats–Redfern method. This procedure is a commonly used thermogravimetric analysis/difference thermal gravimetry/differental thermal analysis (TG/DTG-DTA) kinetic method for single rate form. The study also shows a proposed method for reactive hydroxyl groups content on the starch surface determination, and values were in range of 960.21–1078.76 mg OH per 1 g of starch. Thermal processing revealed the thermophysical properties of biomass for the kinetics of decomposition estimation. Activation energies reached the values in range of approximately 66.5–167 kJ·mol−1. This research also enables the determination of the temperature conditions required for becoming the desired form of material. Therefore, it is necessary to achieve the requested compact porous structure in an activation process, because in the native state, the polymer exhibits limited applications as a result of thermal decomposition, low shear stress, retrogradation, and syneresis, hence the low solubility in organic solvents. Thermodynamic parameters and reactive hydroxyl groups in this article review are innovative and have not yet been found in the literature.

scholarly journals Chemical Reaction Kinematics

1968 ◽  
Vol 23 (12) ◽  
pp. 2080-2083 ◽  
Author(s):  
D. Hyatt ◽  
K. Lacmann
Keyword(s):  
Energy Range ◽  
Cross Section ◽  
Mass Spectrometer ◽  
Cross Sections ◽  
Impulse Approximation ◽  
Reaction Cross ◽  
Molecule Reaction ◽  
Polarization Theory ◽  
Reaction Cross Sections

A Bendix time of flight mass spectrometer has been modified to enable the determination of some ion-molecule reaction cross sections in the energy range 1 — 100 eV.In the reactions studiedX+ + D2 → XD++Dwhere X may be Ar, N2 or CO, the results obtained agree with the predictions of the polarization theory in the range below 10 eV despite the fact that no intermediate complex is formed at these energies. Between about 10—50 eV where spectator stripping occurs the cross section follows an approximate E-l dependence. Above these energies the results are consistent with a transition to a region in which knock-on processes predominate and where an impulse approximation treatment would be valid.

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