scholarly journals Hydrocracking process and kinetic equation: Effect of the fluoride on the performance of the Ni‐Mo catalyst

2021 ◽  
Author(s):  
Ahmad Tavasoli ◽  
Ehsan Taghizadeh Yusefabad ◽  
Yahya Zamani
Keyword(s):  
Kinetic Equation ◽  
Hydrocracking Process ◽  
Mo Catalyst

The effect of Co in hydrodesulphurization of 2,3-dihydrobenzo[b]thiophene on Co-Mo catalyst

1986 ◽  
Vol 51 (6) ◽  
pp. 1195-1205 ◽  
Author(s):  
Rudolf Peter ◽  
Vlastimil Matějec ◽  
Miroslav Zdražil
Keyword(s):  
Kinetic Equation ◽  
Equilibrium Constant ◽  
Hydrogen Sulphide ◽  
Atmospheric Pressure ◽  
Flow Reactor ◽  
Reaction Network ◽  
Sulphur Compound ◽  
Partial Equilibrium ◽  
Mo Catalyst ◽  
Elimination Scheme

Hydrodesulphurization of benzo[b]thiophene and 2,3-dihydrobenzo[b]thiophene on Mo/alumina and Co-Mo/alumina catalysts has been studied in a flow reactor at atmospheric pressure and temperature 543 K. The amount of dihydrobenzo[b]thiophene formed in hydrodesulphurization of benzo[b]thiophene and the amount of benzo[b]thiophene formed in hydrodesulphurization of dihydrobenzo[b]thiophene were much lower on Co-Mo catalyst then on Mo catalyst. The equilibrium constant of the hydrogenation of benzo[b]thiophene to dihydrobenzo[b]thiophene at 543 K was determined. This partial equilibrium was attained during hydrodesulphurization on Mo catalyst irrespectively of the fed sulphur compound but was not approached during hydrodesulphurization on Co-Mo catalyst. Kinetic equation describing simultaneously the reaction of both heterocycles was derived from consecutive hydrogenation-elimination scheme which does not contain step referred to as direct hydrogenolysis of the thiophenic ring. It was concluded that the effect of Co in the reaction network is localized in the section between partially hydrogenated benzothiophene and hydrogen sulphide

Classification for raw oil inlet conditions of hydrocracking process based on ratio cluster

2017 ◽  
Author(s):  
Kenan Sun ◽  
Yalin Wang ◽  
Ling Li ◽  
Xiaofeng Yuan ◽  
Qiquan Chen
Keyword(s):  
Hydrocracking Process ◽  
Inlet Conditions

Fractional Kinetic Equation Involving Integral Transform

2019 ◽  
Author(s):  
Altaf Ahmad Bhat ◽  
Reeta Chauhan
Keyword(s):  
Kinetic Equation ◽  
Integral Transform ◽  
Fractional Kinetic Equation

Oxidation of Ethanol on Sn-Mo Oxide Catalysts

1992 ◽  
Vol 57 (3) ◽  
pp. 439-445
Author(s):  
Magdy A. Wassel ◽  
Nalla K. Allahaverdova ◽  
Tofki G. Alkhazov
Keyword(s):  
Acetic Acid ◽  
Potassium Hydroxide ◽  
Pulse Method ◽  
Conversion Ratio ◽  
Mo Catalyst ◽  
Acid Ratio ◽  
Aqueous Potassium Hydroxide ◽  
The Stability ◽  
Primary Oxidation ◽  
Oxidation Of Ethanol

To determine the acidic and basic properties of the title catalysts, the adsorption of NH3 and SO2 was compared using pulse method. It was found that this characteristics undergoes changes when the Sn-Mo catalyst is treated with aqueous potassium hydroxide solutions of different concentrations. The catalyst treated with the more concentrated KOH solution possesses mainly properties of a base. When studying the oxidation of ethanol it has been found that the αCO2/αaldehyde conversion ratio increases with the time of contact of the mixture with the catalyst while the αCO2/α acid ratio is not affected. The study of two alcohols deuterated either in OH group (C2H5OD) or in the alkyl group ((C2D5OH) has shown that the substitution of C-H for C-D bond enhances the stability of the primary oxidation product, deuterated ethanal, so that it is not transformed further to acetic acid.

Deep Impurities with Collision Delay

2018 ◽  
Author(s):  
Klaus Morawetz
Keyword(s):  
Wave Function ◽  
Kinetic Equation ◽  
Elastic Scattering ◽  
Response Function ◽  
Plasma Oscillation ◽  
Impurity Scattering ◽  
Fermi Momentum ◽  
Screening Length ◽  
Plasma Mode ◽  
Dissipative Mechanism

The linearised nonlocal kinetic equation is solved analytically for impurity scattering. The resulting response function provides the conductivity, plasma oscillation and Fermi momentum. It is found that virial corrections nearly compensate the wave-function renormalizations rendering the conductivity and plasma mode unchanged. Due to the appearance of the correlated density, the Luttinger theorem does not hold and the screening length is influenced. Explicit results are given for a typical semiconductor. Elastic scattering of electrons by impurities is the simplest but still very interesting dissipative mechanism in semiconductors. Its simplicity follows from the absence of the impurity dynamics, so that individual collisions are described by the motion of an electron in a fixed potential.

Classical Kinetic Theory

2018 ◽  
Author(s):  
Klaus Morawetz
Keyword(s):  
Kinetic Equation ◽  
Equation Of State ◽  
Mean Field ◽  
Ideal Gas ◽  
Hydrodynamic Equations ◽  
Free Particles ◽  
Internal Mechanism ◽  
The Mean ◽  
Energy Gains ◽  
Non Locality

The classical non-ideal gas shows that the two original concepts of the pressure based of the motion and the forces have eventually developed into drift and dissipation contributions. Collisions of realistic particles are nonlocal and non-instant. A collision delay characterizes the effective duration of collisions, and three displacements, describe its effective non-locality. Consequently, the scattering integral of kinetic equation is nonlocal and non-instant. The non-instant and nonlocal corrections to the scattering integral directly result in the virial corrections to the equation of state. The interaction of particles via long-range potential tails is approximated by a mean field which acts as an external field. The effect of the mean field on free particles is covered by the momentum drift. The effect of the mean field on the colliding pairs causes the momentum and the energy gains which enter the scattering integral and lead to an internal mechanism of energy conversion. The entropy production is shown and the nonequilibrium hydrodynamic equations are derived. Two concepts of quasiparticle, the spectral and the variational one, are explored with the help of the virial of forces.

scholarly journals Gyrokinetic Particle Simulation Using the Orbit Averaged Electron Drift-Kinetic Equation.

1999 ◽  
Vol 75 (2) ◽  
pp. 131-142 ◽  
Author(s):  
Yasuhiro IDOMURA ◽  
Shinji TOKUDA ◽  
Masahiro WAKATANI
Keyword(s):  
Kinetic Equation ◽  
Particle Simulation ◽  
Electron Drift

Hydrocracking process for producing distillate or naphtha

2021 ◽  
Vol 2021 (2) ◽  
pp. 7
Keyword(s):  
Hydrocracking Process

On the quantum kinetic equation for molecular gases

Physica ◽  
1974 ◽  
Vol 71 (1) ◽  
pp. 113-123 ◽  
Author(s):  
O. Petrus
Keyword(s):  
Kinetic Equation ◽  
Quantum Kinetic Equation ◽  
Molecular Gases
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