Results 11 to 20 of about 1,922,304 (342)

Numerical identification of the chemical reaction rate constant in the ideal displacement model

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2023
A chemical-technological process of a second-order reaction in a chemical reactor of an ideal displacement, described by a nonlinear partial differential equation of the first order has been considered.
Gamzaev Khanlar, Gamzaeva Nusaba
doaj   +1 more source

Reaction Kinetics in the Vermicomposting Process of Peach Waste

open access: yesLife, 2022
Peach is a fruit cultivated in temperate regions and its use generates waste composed of seeds and skin. Inadequate disposal of this waste generates an environmental impact; therefore, an alternative is to apply a vermicomposting degradation process.
Lorena De Medina-Salas   +3 more
doaj   +1 more source

Universal Kinetic Model to Simulate Two-Step Biodiesel Production from Vegetable Oil

open access: yesEnergies, 2020
To date, to simulate biodiesel production, kinetic models from different authors have been provided, each one usually applied to the use of a specific vegetable oil and experimental conditions.
A. Alcantara   +2 more
doaj   +1 more source

A new reaction rate constant for char combustion- formulation

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2013
This paper shows the development and formulation of a new reaction rate constant of combustion for pulverized coal. The chemical reaction rate was considered as a function of coal intrinsic reactivity and fuel mass for a reaction order n.
Andrés Rojas   +2 more
doaj   +1 more source

Determination of the Reaction Rate Constant for the Opposing Reaction by Integral Method

open access: yesChemical Engineering Transactions, 2016
In order to calculate the forward reaction rate constant and the reverse reaction rate constant of the opposing reaction, a calculation program was designed with VB language. According to the law of mass action, the reaction rate equation was established
X.Z. Huang, L. Zhang, X. wang, D. Wu
doaj   +1 more source

The investigation of optimum condition of natural rubber epoxidation reaction in latex phase

open access: yesMajalah Kulit, Karet, dan Plastik, 2021
Natural rubber (NR) latex epoxidation is a chemical modifcation of natural rubber to produce natural rubber with higher polarity (oil resistant) which is commonly called epoxidized natural rubber (ENR). ENR is produced from the reaction of natural rubber
Norma Arisanti Kinasih   +3 more
doaj   +1 more source

Reactions of C+ + Cl-, Br-, and I--A comparison of theory and experiment. [PDF]

open access: yes, 2019
Rate constants for the reactions of C+ + Cl-, Br-, and I- were measured at 300 K using the variable electron and neutral density electron attachment mass spectrometry technique in a flowing afterglow Langmuir probe apparatus. Upper bounds of <10-8 cm3
Engeling, Kenneth W   +7 more
core   +2 more sources

Kinetic Parameters Evaluation of Furfural Degradation Reaction Using Numerical and Integral Methods

open access: yesJurnal Teknik Kimia dan Lingkungan, 2019
Furfural adalah salah satu bahan kimia penting yang dapat diubah menjadi berbagai bahan kimia seperti furfuryl alkohol dan asam levulinat. Furfural dapat diproduksi dari biomassa lignoselulosa dalam kondisi asam dengan mengkonversikan fraksi hemiselulosa
Jabosar Ronggur Hamonangan Panjaitan   +2 more
doaj   +1 more source

Kinetics of the Saponification of Mixed Fats Consisting of Olein and Stearin

open access: yesJournal of Engineering, 2023
This research presents the kinetics of the saponification reaction using mixed fats of olein and stearin [in the ratio (3:1)] with NaOH solution. In this reaction, excess solution of NaOH was used to ensure the reaction being irreversible.
Raghad Fareed Kassim Almilly
doaj   +1 more source

On a Hypercycle System with Nonlinear Rate [PDF]

open access: yes, 2001
We study an (N+1)-hypercyclical reaction-diffusion system with nonlinear reaction rate n. It is shown that there exists a critical threshold N_0 such that for N\leq N_0 the system is stable while for N> N_0 it becomes unstable.
Wei, J, Winter, M
core   +1 more source

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