Physical Sciences and Mathematics Commons^™

An Investigation Of Metallic Rhenium, Rhenium Dioxide And Rhenium Chlorides As Catalysts In The Hydrogenation Of Certain Organic Substrates, Walter William Brown

Theses and Dissertations

The purpose of the present investigation was to examine the various analytical methods to ascertain the suitability of the methods for our use in determining the amount of rhenium used in our catalysts, and, if necessary devise a new method. Also, several catalysts were to be prepared and used in hydrogenation or organic compounds. Evaluation of the catalytic activity of each catalyst was to be made by using them with various selected organic substrates.

Liquid Scintillators. Some Aryl Substituted Phenanthrenes And Dihydrophenanthrenes, And Related P-Terphenyls And P-Quaterphenyls, Stephen Paul Birkeland

Chemistry and Chemical Biology ETDs

The liquid scintillation system has three basic components:

(1) A scintillation solution consisting of an efficient solvent and a fluorescent solute.

(2) A photomultiplier tube.

(3) An electronic system for measuring and recording the voltage pulses generated by the photomultiplier from the photons impinging on it.

The Kinetics Of Thermal Decomposition Of 1,1'-Azobutane, 1,1'-Azoisobutane And 2,2'-Azobutane, Norman L. Eatough

Theses and Dissertations

The following compounds have been prepared and purified and the boiling points, densities, refractive indicies and infrared spectra of each have been determined and recorded: n-butyraldazine, isobutyraldazine, methylethyl ketazine, 1,2-di-n-butylhydrazine, 1,2-diisobutylhydrazine, 1,2-di-sec.-butylhydrazine, 1,1'-azobutane, 1,1'-azoisobutane and 2,2'-azobutane. Vapor pressure curves and freezing points of 1,1'-azobutane, 1,1'-azoisobutane and 2,2'-azobutane have been determined and recorded. The kinetics of thermal decomposition of 1,1'-azobutane, 1,1'-azoisobutane, and 2,2'-azobutane in a flow system using hydrogen and helium as a carrier gases have been investigated. The investigation was carried out for two different concentrations of the azo compounds over a pressure range of 670 to 890 mm. Hg …

Ferrilegoglobin As An Oxidizing Agent For Hydrazine, Donald B. Larson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The system in which atmospheric nitrogen succumbs to enter Nature's cycle has a yet proven evasive with respect to the actual chemical reactions. At present several types of systems are proposed but their chemical makeup is practically unknown.

A Manometric Method For The Determination Of Soil Carbonates In The Field, N. A. Polyzopoulos

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In soil survey work the method now generally used to evaluate the carbonate content of the soil in the field is to observe the amount of effervescence that takes place when the soil reacts with dilute acid. The four degrees of effervescence usually recognized are designated by the symbols eo, e, es, ev and correspond roughly to a lime content of 0-0.5, 0.5-3, 3-15, and above 15 per cent, respectively. This, or course, is a very rough estimate and therefore a method is needed for the quantitative determination of carbonates in the field with a fair degree of accuracy. If …

An Investigation Of Complex Species In Silver Chloride Solutions I. Solubility Measurements ; Ii. Ion Exchange Methods, Harry G. Hecht

Theses and Dissertations

The complex species in silver chloride solutions have been investigated by solubility measurements and by ion exchange methods in this work. The solubility of silver chloride in solutions of varying chloride ion concentrations was determined by radioassay techniques. The method of least squares was used to evaluate the constants for the formation of the aqueous silver chloride and the dichloro-complex species; the values being 1.99 x 103 and 2.98 x 104, respectively, at 25.00°C. Aqueous solver chloride has been shown to be sorbed by Amberlite IR-120 from silver chloride solutions which have an ionic strength of 0.2. This sorption has …

Molecular Force Fields Of Ethylene, Allene, Formaldehyde, Ketene, And Diazomethane, Charles Edward Bailey

Doctoral Dissertations

Infrared and Raman spectra furnish one of the most powerful methods for studying the internal forces which act in molecules. The vibrational frequencies which are obtained from a study of the spectra are functions of the geometry and masses, which determine the kinetic energy of the system, and of the forces acting in the molecule, which determine the potential energy of the system. Therefore, if the geometry of a molecule is known, the vibrational frequencies of the molecule can be used to ob­tain information concerning the forces acting during the motions.

Preparation Of Compounds Of Potential Physiological Activity: Amino Esters Of Substituted Benzilic, Glycolic And Acetic Acids And Related Compounds, Kumbla Vittal Nayak

Doctoral Dissertations

Introduction: Medicinal chemistry is one of the areas of scientific endeavor which has been achieving increasing importance during the last two decades. It tends to become more and more the study of the chemical reactions between therapeutic agents and living tissues. In 1940 practically nothing was known about the processes by which drugs produce their effect, how they react with protoplasm and how they are in turn modified, detoxified, metabolized, or eliminated by living organisms. Appreciable progress in this direction is now being made.

Recent advances in such a field are by no means defined. Countless drugs have been introduced …

A Study Of The Reactions Of Alkali Metals With Alcohol In Liquid Ammonia, Eugene Joseph Kelly

Doctoral Dissertations

Introduction: This thesis embodies the results of research performed under a contract between the University of Tennessee and the United States Atomic Energy Commission, the contract calling for an examination of certain chemical separation factors for the isotopes of hydrogen.

The investigation was centered on a study of the fractionation of the isotopes protium (hereafter called hydrogen) and tritium through the reaction of a weak acid with metal. The reactions were carried out in a homogeneous system with liquid ammonia serving as solvent for the reactants.

Ua3/3/1 Proposed National Science Foundation Summer Institute, Ward Sumpter, Wku President's Office

WKU Archives Records

Proposal for National Science Foundation summer institute to be held at WKU during the summer of 1959.

Condensation Of Terephthalaldehyde And Hydroxyacetophenones, Ernest John Bonelli

University of the Pacific Theses and Dissertations

Organic pigments were the source of coloring matters used by man until comparatively recent times. It is to be presumed that the first steps in the use of these pigments no dyes resulted from the accidental staining of the skin or fabric by a vegetable material. Prehistoric man, in order to decorate his implements or his person, or even to make records of his mode of life, used the materials with which he came in daily contact. Coloring materials included earth and vegetable substances found in flowers, seeds, berries, nuts, bark, wood, and roots, and less readily available coloring materials …

The Apparent Effects Of Rh Hapten Ingestion On The Circulating Blood Phosphorus, Barbara Lyke

Masters Theses

The purpose of this work carried on at Western Michigan University during the past year is an attempt to elucidate further the action of Rh hapten within the body, or more specifically, the effect of its ingestion on the circulating blood phosphorus.

An Introduction To The Study Of Chromatography Of Aureomycin ..., Øistein Skjellum

University of the Pacific Theses and Dissertations

Part of a current research program undertaken by the faculty in chemistry at the College of the Pacific is concerned with studying chemical compounds which are favorably absorbed in Aureomycin. The reason for this preference of absorption is still not known. In order to determine the cause of this absorption, it is necessary to establish a method of recovering tetracycline and its derivatives from malignant tissue. When working with recovery of tetracycline and its derivatives, the small scale of operations immediately suggests the use of chromatographic techniques of separation, identification, and estimation.

A Kinetic Study Of The Reaction Between Acetic Anhydride And Isobutyl Alcohol Using A Chemical Oscillometer, Charles Huffman Lewis Jr.

University of the Pacific Theses and Dissertations

The object of this research project is to investigate the base catalyzed reaction of acetic anhydride and isobutyl alcohol reacting to form acetic acid and isobutyl acetate. In this investigation, a high frequency oscillometer is used to observe the progress of the reaction as it proceeds to the formation of products.

The chemical oscillometer, in one form or another, has been in existence for over twenty years. During this time it has developed from a laboratory curiosity to a practical instrument with a great number of applications. However, its use in connection with kinetic studies has not been too active …

Reaction To 1-Bromo-2, 3-Epoxybutane With Phenol In The Presence Of Boron Trifluoride, Robert F. Bridger

Masters Theses

"It is the purpose of this investigation to study the reaction of phenol with 1-bromo-2,3-epoxybutane in the presence of boron trifluoride and to identify the reaction products in order to gain information which will be helpful in understanding the mechanism of the reaction"--Introduction, page 3.

A Study Of The Heat Effects At Electrodes During Electrolysis, Howard Frank Holmes

Doctoral Dissertations

Temperature difference measurements were made during the electrolysis of aqueous copper sulfate between copper electrodes. The temperature differences measured were those between the cathode and the anode, the cathode solution, and the anode and the solution. These values were obtained as a function of the time of the electrolysis. The variation of these differences with time and their magnitudes were explained in terms of the entropy changes occurring at the electrodes, resistance, and polarization.

The effect of some inert electrolytes on these temperature differences was determined as was the effect of gelatin. Explanations for these effects were given in terms …

A Study Of The Reduction Of Certain 1-Substituted Naphthalenes By Alkali Metals In Liquid Ammonia, Gerald Titus Davis

Doctoral Dissertations

(From the Introduction)

The first phase of the work to ·be presented was aimed at studying the conditions under which 1-aminonaphthalene is efficiently reduced to the 5,8-dihydro derivative and thereby finding experimental evidence which would be of value in the selection of a mechanism for the reduction. After the initial work, the study was extended to include the reduction of other 1-substituted naphthalenes.

Synthesis Of 7-(Dialkylaminoalkyl)-Benzo [C] Phenothiazines; The Metalation Of 7h-Benzo [C] Phenothiazine With N-Butyllithium, William Earl Tatum

Doctoral Dissertations

Introduction: Phenothiazine is one of the more widely investigated heterocyclic molecules known to modern chemistry. The founding of the synthetic dye industry in the latter part of the nineteenth century stimulated many new fields of organic research, one of which was phenothiazine chemistry. Bernthsen, known as father of phenothiazine chemistry, first synthesized (1) this compound in 1883, after suspecting its presence in the nucleus of the methylene blue dyes.

Since that time phenothiazine and its derivatives have found uses as antioxidants (2), antihistamines (3), antiemetics (4), and in the treatment of Parkinson's disease (5). During the past decade, considerable attention …

A Spectrophotometric Study Of The Analytical Chemistry Of Vanadium, Kenton E. Bentley

Chemistry and Chemical Biology ETDs

Vanadium is most frequently encountered in analytical chemistry in the volumetric determination of vanadium by oxidation-reduction titration. Vanadium is rarely determined gravimetrically and finds little use as a reagent in gravimetric analysis. The simple ionic forms of the valence states of vanadium and the colors of acidic, aqueous solutions of these ions, as reported in the literature, are listed in Table 1. There is some confusion in the nomenclature of the ionic forms; that given in Table 1 is by analogy to chromium.

The Synthesis Of Some Triazole Derivatives, John M. Collier

Chemistry and Chemical Biology ETDs

The triazoles have been known since the late 1800's when von Pechmann discovered the ring system during the course of his work with osazones. He first assigned the name "osotriazone" to the parent ring; this was later changed to "osotriazole", a name which is still retained for certain derivatives obtained from the sugar osazones.

The Synthesis Of Some Fluorine Derivatives As Potential Scintillation Solutes, Martin Dennis Barnett

Chemistry and Chemical Biology ETDs

In connection with work being carried out, in part, by the Biomedical Research Group, Los Alamos Scientific Laboratory, on the evaluation of organic compounds as solutes in liquid scintillation detector systems, it seemed of interest to investigate the liquid scintillation properties of fluorine analogues of p-terphenyl and p-quaterphenyl. These compounds have been shown to possess remarkable scintillation properties; however, the use of p-quaterphenyl has been severely curtailed by its low solubility in toluene. Accordingly, the synthesis of a number of 2- and 2,7-substituted fluorines was carried out in an effort to obtain a more soluble, completely conjugated aromatic system and …

An Esr Study Of Stable Free Radicals In Natural And Synthetic Melanins, Juana Acrivos

Faculty Publications, Chemistry

No abstract provided.

Thermodynamic Properties Of The System Pucl3-Kcl, Robert Benz

Chemistry and Chemical Biology ETDs

This paper is a dissertation on a study of the determination of the Gibbs free energy of formation of plutonium chloride using potentiometric measurements obtained from a galvanic cell of the type,

Ta, Pu(1)/ PuCl3-KCl(1,N1)/ Cl2(g), C.

The terminals of the two electrodes, tantalum and graphite, have been included in the representation inasmuch as their effects must be taken into consideration in the design of the cell; however, in order that the desired virtual cell reaction be realized, it is necessary that these terminals be chemically inert.

Rocky Mountain Spectroscopy Conference

Rocky Mountain Conference on Magnetic Resonance

Program from the Rocky Mountain Spectroscopy Conference, sponsored by the Rocky Mountain Spectroscopy Society. Held in Denver, Colorado, August 11-12, 1958.

Spectrophotometric Study Of The Boron- Curcumin System, Frank Xavier Pollio

Master's Theses

In the present research project an attempt has been made to determine the mechanism of the reaction followed in the curcumin spectrophotometric method for boron determination using a modification of Naf'tel's method.

Spectrophotometric Study Of The Boron-Curcumin System, Frank Xavier Polio

Master's Theses

With mechanism and structure in mind, the aim of this research project was to investigate the role played by the various reagents used in the curcumin spectrophotometric method. The reagents were used in varied concentrations and at times some eliminated entirely, in the hope that a greater understanding be gained in the overall mechanism followed by the reaction.

One of the major objectives was to try to determine the structure of the colored substance formed in the reaction. A step towards this goal was gained by obtaining molar ratios of the entities suspected to be an intricate part of the …

Decahydroquinoxaline : Stereoisomers And Derivatives, Lynn Pendleton

Theses and Dissertations

The preparation of decahydroquinoxaline by four different methods, with no determination of geometrical configuration made, was reported in the literature. The purpose of this thesis was to establish the geometrical configurations of the decahydroquinoxalines prepared by these four methods and to determine if, as the work of previous investigators suggested, the two pure isomers of decahydroquinoxaline isomerized, each giving an equilibrium mixture of both isomers. Decahydroquinoxaline was prepared by three of the four previously reported methods of preparation. Comparison of the properties of the decahydroquinoxalines prepared and the preparation, comparison, and analyses of the diacetyl and the dinitroso derivatives of …

Rhenium Trioxide, Rhenium Heptoxide And Rehnium Trichloride As Hydrogenation Catalysts, William J. Bartley

Theses and Dissertations

The purpose of this study was to characterize the catalytic activity of rhenium trioxide and rhenium trichloride as hydrogenation catalysts. Work was also undertaken to further study the catalytic properties of rhenium heptoxide. The activity of this latter compound had received some study in a previous project. A complete review of the literature has been made on the organic and inorganic chemistry of rhenium trioxide and rhenium trichloride. A survey of the literature on catalytic hydrogenation and the chemistry of rhenium heptoxide has also been included. Rhenium trioxide was prepared by three similar methods. The first two involved the formation …

Some Aspects Of The Non-Aqueous Chemistry Of The Uranium Chlorides, Richard E. Panzer

Chemistry and Chemical Biology ETDs

The original object of this investigation was not only to investigate the chemistry and preparation of the complex compound, UCl₅•PCl₅, but to separate it into its constituents, uranium pentachloride and phosphorus pentachloride, thus establishing a new method of preparing the uranium pentachloride. Optimum conditions for the preparative reaction of UCl₅•PCl₅, partially investigated by Suttle (25), were to be established. Reactions were to be investigated which might be used for preparation of similar compounds of uranium pentachloride. The possible existence of other uranium pentachloride-phosphorus pentachloride compounds was to be determined. Electrolyses in phosphorus …

Synthesis Of 4, 7-Disubstituted Derivatives Of Imidazo-[4,5-D]-Pyridazine And Related Compounds, William Seese

Chemistry and Chemical Biology ETDs

When this study was contemplated, no imidazo [4,5-d] pyridazines had been reported in the literature. Compounds of special interest due to their possible antitumor activity were the 4,7-dimercapoto-, the 4,7-diamino-, the 4-mercapto-, and the 4-aminoimidazo [4,5-d] pyridazines together with unsubstituted imidazo [4,5-d] pyridazine. Key intermediates in the preparation of substituted amines in the ring system were the 4-chloro-, and the 4,7-dichloro- derivatives.