etd AT Indian Institute of Science: Recent submissions
Now showing items 541-560 of 8174
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Dehydrogenation of cyclohenxanol to cyclohexanone
The dehydrogenation of cyclohexanol to cyclohexanone has been studied in detail. The thermodynamic equilibrium constants at various temperatures have been collected from literature and the equilibrium conversions have been ... -
Studies on the catalytic hydrogenation of salicyloyl chloride
In the present work, catalytic hydrogenation of salicyloyl chloride to salicylaldehyde by Rosenmund reduction using Pd-C catalysts was extensively studied. A stirred slurry reactor was used for studying this reaction. The ... -
Modeling of phase inversion phenomenon
Turbulent liquid–liquid dispersions are frequently encountered in the chemical industry in various operations such as liquid–liquid extraction, liquid–liquid reactions, polymerization, and direct contact heat transfer. ... -
Studies in hydrodynamic and electrohydrodynamic instabilities of fluid-solid and fluid- fluid interfaces
The study of hydrodynamic and electrohydrodynamic stability is an important branch of fluid mechanics and has applications in various areas of chemical engineering and biophysics. The detailed study of hydrodynamic stability ... -
Polymerization in supercritical fluids
The chemical industry has become increasingly aware of environmental concerns over the use of volatile and hazardous organic solvents to synthesize commercial polymers. Attractive properties of supercritical fluids make ... -
Oxidation of alkyl aromatics Part II : oxidation of toluene to benzoic acid in presence of promoters
The investigation on the catalytic vapour-phase oxidation of toluene in the presence of gaseous promoters was taken up to determine the operating conditions favourable for the maximum conversion to benzoic acid. The effects ... -
Nonlinear wave propagation in muln dimensions
This thesis consists of four chapters including a chapter on general introduction and deals with some problems in nonlinear wave propagation in multi-dimensions. The problems are: nonlinear wave propagation in a two-dimensional ... -
Iterative and direct P;Adic algorithms for exact solution of numerical problems
In this chapter, we have described an O(n³), 2 < P < 3 algorithm for inverting integer matrices using p-adic computations. Some of the important aspects of this method are: (a) Absence of any convergence problems – the ... -
Numerical and analytic studies of generalised Burgers equations
Numerical and Analytic Studies of Generalised Burgers Equations The Burgers equation ut+uux=?uxx,???>0u_t + u u_x = \delta u_{xx}, \; \delta > 0ut?+uux?=?uxx?,?>0 is a nonlinear partial differential equation representing ... -
Solutions of some rasially symmetric problems of heat conduction with phase change
Some analytical and numerical solutions pertaining to radially symmetric problems of heat conduction with phase change have been presented in this thesis. The emphasis is on finding the growth rate of the moving boundary. ... -
Theoretical studies on some superconductors.
Superconductivity can be considered to be one of the most attractive branches of solid-state physics. This is especially true now, with the sensational discoveries of high transition-temperature superconductors. On the ... -
Some stability and flow problems in hydrodynamics
(a) Exploding shell: We see that the disturbances in the plasma pressure and velocity grow with time. They manifest in the form of unbounded oscillations with their amplitudes varying as time and frequencies proportional ... -
Exploring the Redox Processes and the Associated Chemical Reactions in Next Generation Rechargeable Li-O2 Batteries
The exceptionally high specific energy of Li-O2 rechargeable batteries makes them promising as a next-generation energy storage technology, beyond the conventional intercalation battery systems such as the lithium-ion ... -
Design Strategies for Janus and Core–Shell Structures and Single- Ion Conducting Membranes Based on Hyperbranched Polymers
Hyperbranched polymers (HBPs) are a class of highly branched macromolecules characterized by their low melt viscosity, high solubility, and numerous terminal functional groups amenable to chemical modification.1 Janus ... -
A syntactic model for representing the behaviour of mechanical artefacts in product models
Product models are being proposed as information models to drive the entire product lifecycle. CAD models that drive the product development cycle presently are primarily a repository of shape information and, therefore, ... -
Fracture Processes in Sustainable Fibrous Cementitious Composites: Insights from Statistical Mechanics and Natural Time Analysis
In recent years, there has been a growing demand in the construction industry for slender, durable, and high performance structural elements. This has led to the development of an advanced cementitious composite material ...