All articles
112 articles
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Development of Mathematical Model for the Catalytic Polymerization of Propylene Process
Abstract: Mathematical model was developed to monitor, predict and simulate the catalytic polymerization of polypropylene process in a continuous stirred Tank Reactor, (CSTR). The developed model was based on consideration of functional parameters that influence the catalytic polymerization of propylene process production. These functional parameters are hydrodynamic factors, which induce process coverage into Aspen polymers to demonstrate the reliability of mass and heat transfer phenomena experienced during catalytic polymerization of propylene …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 2, 2018 · pp. 29–36 Read article
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Evaluating Boiler Performance in Refinery Operations Using Thermodynamic Principles
Abstract: This work involves the evaluation of effect of boiler operating temperature and pressure on the performance of steam power plant, a case study of Port Harcourt Refining Company. Thermodynamic principles of the Rankine cycle as the ideal cycle for steam power plant analysis were applied in this study. Boiler operating pressures of 43bar and 61bars were used. The results obtained showed that there was improved performance of the plant when …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 2, 2018 · pp. 8–28 Read article
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Review of Reactive Extraction Process for Recovery of Pyruvic Acid
Abstract: Pyruvic acid having a molecular formula (C3H4O3) is an important alpha-keto-carboxylic acid. It is mainly manufactured by biotechnological routes or chemical synthesis. There are number of applications of pyruvic acid in the industrial sector such as chemical, food, cosmetic and agriculture sector. The main problem for the production of pyruvic acid from the fermentation broth is downstream processing. The number of techniques developed to recover this acid from their aqueous …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 2, 2018 · pp. 1–7 Read article
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Kinetics of oxidation of Isonicotinic Acid Hydrazide by Iron (III)-2,2ı-Bipyridyl complex-Micellar effect of Sodium DoDecyl Sulphate
Abstract: The kinetics of oxidation of Isonicotinic Acid Hydrazide (INH) using Iron (III) -2,2ı-Bipyridyl complex was studied spectrophotometrically in acidic medium. The stoichiometry of the reaction between INH and Iron (III) - 2,2ı-Bipyridyl complex was found to be 4:1. The rate of the reaction is enhanced by increasing [acid]. The reaction obeys first order kinetics with respect to iron (III) and 2, 2’Bipyridyl.The rate of the reaction is markedly accelerated in …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 1, 2018 · pp. 51–56 Read article
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Model for Prediction of Pneumatic Proportional Integral Controller Transfer Function for Step Input Process Response
Abstract: Mathematical model was developed to monitor, predict and simulate the pneumatic proportional integral controller transfer function for step input process response. The model developed was based on the geometric arrangement as well as the distance of the flapper from the nozzle was considered to be small, where the capacitance C is constant and R is the resistance of the integral restrictor. The characteristics of the process was monitored, predicted and …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 1, 2018 · pp. 28–37 Read article
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KINETICS AND MECHANISM OF OXIDATION OF MIXTURE OF OXALIC ACID AND ADIPIC ACID BY CHROMIC ACID IN PRESENCE OF HYDROCHLORIC ACID
Abstract: The kinetics of oxidation of mixture of oxalic acid and adipic acid by chromic acid in presence of hydrochloric has been studied. The products are succinic acid and carbon dioxide. The rate of oxidation increases with the increase in the concentration of HCl acid. kinetics of oxidation of mixture of oxalic acid and adipic acid by chromic acid shows first order reaction at 270 c, order of the reaction is …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 1, 2018 · pp. 23–27 Read article
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Modeling of CSTR Reactor for Sodium Benzoate Production
Abstract: The mathematical model was developed for Continuous Stirred-Tank Reactor (CSTR) for the production of sodium benzoate from the reaction of sodium hydroxide and benzoic acid. The performance equation for the operation of CSTR was developed for the analysis of the reactor’s functional dimensions and parameters. The analysis of the reactor’s functional parameters was performed at molar ratio of benzoic acid to sodium hydroxide of 1.5 to 3.0 at intervals of …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 1, 2018 · pp. 38–50 Read article
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EFFECT OF GLUCOSE ON PHYSICO-CHEMICAL PROPERTIES OF SOME SURFACTANT SOLUTIONS
Abstract: Physico-chemical and thermodynamic studies of some aqueous surfactant solutions were carried out by employing conductance and dye solubilization (UV-Vis absorption spectroscopy) techniques. From the above measurements, critical micelle concentration (CMC) and thermodynamic properties of micellization (ΔGomic , ΔHomic and ΔSomic) have been obtained for an anionic [Sodium dodecyl sulphate (SDS)],a cationic [hexadecyl trimethyl ammonium bromide, (HTAB)] and non ionic (Tween-20) surfactant solutions. Effect of mixing cosolute on CMC and thermodynamics …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 1, 2018 · pp. 1–22 Read article
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Importance of the Laws of Thermodynamics in the Field of Chemical Sciences
Abstract: The Laws of Thermodynamics are important because they control interactions of everything in the universe - regardless of scale. These rules stretch across every form of science known to humankind. Classical physics is, from a certain perspective, entirely based on Newton's Laws of motion. The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system. The second law …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 3, Issue 2, 2017 · pp. 7–11 Read article
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Thermodynamic Techniques in Food Chemistry – A Review
Abstract: The thermal activities of food strongly depend on its composition. The aims of food processing are to inactivate spoilage and pathogenic microorganisms and to sustain this condition in storage. Using calorimetric techniques, many physicochemical effects can be detected in the temperature range between -50°C and 300°C. Biophysical techniques viz., isothermal titration (ITC) and Differential Scanning Calorimetry (DSC) are used to characterize the structure and properties of food materials before and …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 3, Issue 2, 2017 · pp. 1–6 Read article
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Thermodynamic Chemistry in Dyeing of Wool: A Study on Thermodynamics Chemistry of Dyeing of Wool Products
Abstract: Dyes are synthetic aromatic compounds which can bring bright and fixed color to other materials. It is described that over 100,000 commercially accessible dyes occur and more than 7x105 metric tons of dyes are produced universal annually. When a textile fiber is dipped in a solution of dye under favorable conditions, the fiber becomes colored, the color of the solution decreases and dyeing has occurred. The wool fiber is hair …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 3, Issue 2, 2017 · pp. 21–26 Read article
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AN OUTLINE OF KINETICS VERSUS THERMODYNAMICS CHEMISTRY
Abstract: Nearly all chemical reactions has a kinetic and a thermodynamic feature. The terms ‘kinetic’ and ‘thermodynamic’ though inter-related are two diverse aspects of a chemical reaction. This paper represents an outline of the underlying relationships between the two through application to chemical reactions and an example from natural processes. A required condition for thermodynamic control is reversibility or a mechanism allowing the equilibration between products. In this manner, the thermodynamically …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 3, Issue 2, 2017 · pp. 17–20 Read article
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A Study of Thermodynamics of Ligand - Receptor Interaction in Chemical Sciences
Abstract: The formation and separation of definite non-covalent interactions between varieties of macromolecules play a crucial role in the function of biological systems. During the last few years, three main lines of research led to a dramatic improvement of our understanding of these important phenomena. First, combination of genetic engineering and X ray crystallography made available a simultaneous knowledge of the precise structure and affinity of series or related ligand-receptor systems …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 3, Issue 2, 2017 · pp. 12–16 Read article
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Second Law of Thermodynamics in Automobile Engines and Aerospace Vehicles
Abstract: Thermodynamics is a core part of science. Nearly all scientists should have a basic knowledge of thermodynamics. The second law of thermodynamics is considered to be the most fundamental law of science. It explains not only the working of engines, refrigerators and other equipment’s used in our daily life, but also highly advanced theories like big bang, expansion of universe, heat death, etc. Thermodynamics is the study of relationship between …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 3, Issue 1, 2017 · pp. 26–29 Read article
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A Dynamic Role of Thermodynamics Chemistry in Refrigeration and Air Conditioner Devices
Abstract: Thermodynamics plays a very crucial role in our daily life. Almost all the activities that we do or observe are all based on the principles of thermodynamics. Here, some of the common routine activities of refrigeration and air conditioners are brought into limelight that is explained by the phenomenon of thermodynamics. Thermodynamics is a branch of physics concerned with heat and temperature and their relation to energy and work. It …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 3, Issue 1, 2017 · pp. 19–25 Read article
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Kinetics of Nucleation and Growth of Metal Nanoparticles – A Mini Review
Abstract: The prediction of nucleation and growth model for metal nanoparticles is very much important in the field of catalysis and fuel cell technology. In this mini review, discuss the initial stages of nucleation and growth model for 2D and 3D instantaneous and progressive nucleation kinetics explained. Keywords: instantaneous, nucleation, nucleation rate, progressive
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 3, Issue 1, 2017 · pp. 15–18 Read article
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Detection of Trans Fats in Oils
Abstract: Today’s society is highly concern about their health which focuses our efforts in one direction that is how to eliminate harmful elements from our daily diet. One of them being Trans fatty acids. Detections of these can be done by various methods, but most of them are lengthy and tedious with varying accuracy. This reason has been the driving force for development of alternative methods to find accurate measurements. In …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 3, Issue 1, 2017 · pp. 7–14 Read article
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Simplified Models for Some Thermodynamic Properties of Saturated Water in a Pressurized Water Reactor
Abstract: The properties of water and steam in a pressurized water reactor (PWR) need constant monitoring to understand what goes on in the PWR. Such properties include the thermodynamic properties, namely, specific volume, specific enthalpy, specific entropy and specific heat. This work is focused on calculating these properties of saturated water by using a simplified model within the temperature range that is applicable to PWR. The model parameters for each property …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 1, Issue 1, 2015 · pp. 10–15 Read article
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Thermodynamic Analysis of an Adsorption Refrigeration System
Abstract: In this paper, thermodynamics analysis of an adsorption refrigeration pair (activated carbon and methanol) at adsorption equilibrium conditions has been proposed. Similar analyses have been done by different scientists for different combinations of adsorbent-adsorbate pairs. Adsorption refrigeration processes normally occurs in physical adsorption condition and activated carbon molecules being nonpolar in nature, micropores approach of adsorption (Polanyi’s micropores theory and D-A equation) has been followed here. Analysis of the adsorption …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 1, Issue 1, 2015 · pp. 1–9 Read article
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Synthesis and Characterization of Mixed Ligand Complexes of Hydroxamic Acids with Metal (II) Phthalimide
Abstract: The mixed ligand complexes of Co (II) and Ni (II) with potassium salt of phthalimide (primary ligand) and hydroxamic acids (secondary ligand), where hoxm = L1=3,4,5-trimethoxy benzohydroxamic acids (TMBHA), L2=N-phenyl–3,4,5-trimethoxy benzohydroxamic acid (PTMBHA), L3=3,4-di methoxy benzohydroxamic acid (DMBHA) and L4=N-phenyl-3,4-di methoxy benzohydroxamic acid (PDMBHA) and phth=phthamlimide were synthesized and characterized by elemental analysis, melting points, I.R studies, UV–visible analysis, measurement of magnetic susceptibility, thin layer chromatography, etc. Elemental analysis depicts …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 3, Issue 1, 2017 · pp. 1–6 Read article