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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 …

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 …

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.

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 …

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

WKU Administration Documents

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

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.

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.

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 …

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 …

A Study Of The Action Of 1-Pentanol In The Debromination Of 1, 2-Dibromoethane By Zinc, Jerry Frederick Janssen

Dissertations and Theses @ UNI

The fact that rapid evolution of ethene took place at moderately low temperatures in the presence of 1-pentanol suggested that the alcohol perhaps played a less evident role in the reaction than was previously supposed. The problem of this study is to elucidate the role of 1-pentanol in the reaction of 1, 2-dibromoethane with zinc .

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

It is a general experimental result that as the temperature of a chemical system is increased the thermodynamic parameters of state become more important while the diffusion controlled and other activation type parameters become less important in controlling the net chemical reaction. The growing intereats in chemical processing of plutonium materials at elevated temperatures has emphasied the importance of an accurate knowledge of the thermodynamic data tor plutonium compounds as an aid to the prediction and the study of possible economically feasible processes.

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 …

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

Chemistry and Chemical Biology ETDs

The antitumor activity of 8-azaguanine (5-amino-7-hydroxy-v-triasolo([d] pyrimidine) (A) prompted the preparation of the imidazo-[4, 5-d] pyridazine ring system (B). In this ring the two nitrogen atoms are adjacent in the six-membered ring with the five-membered imidazole ring remaining the same as in the parent purine ring (C).

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

Chemistry and Chemical Biology ETDs

Uranium, discovered by Klaproth in 1789, has been the object of greatly intensified chemical and physical studies since the establishment of the Manhattan Project. An event such as the discovery of the hexachloride of uranium in 1943 points up the relatively unknown status of the chemistry of this element at a fairly recent date. It is not, therefore, surprising that the chemistry of many compounds of greater complexity than the hexachloride had not been investigated. However, with the search intensified for methods of separation of the naturally occurring isotopes for subsequent use in nuclear weapons and reactors, the years since …

The Bromination Of 1,1,1-Ethanetriacetic Acid, John A. Gurney

Theses and Dissertations

Essential to the entire field of Organic Chemistry is the nature of the carbon to carbon bond. Our current concepts and guiding principles concerning it are almost solely constructed from aliphatic compounds, certain simple ring species, and aromatic systems. Except for special cases, aliphatic and aromatic types are felt to be mildly strained or free from internal tension while the alicylic small and medium ring compounds are the so-called strained molecules. These strained compounds involve bending back or compression of two of the four carbon bonds from an equilibrium position. Distortions of more complex origin occur in the paracyclophanes and …

The Magnesium-Hydrogen System, J. Frederick Stampfer Jr.

Chemistry and Chemical Biology ETDs

The motivating factor for this investigation of the magnesium-hydrogen system was the recent interest in the hydride of beryllium. Although beryllium hydride has been prepared by the pyrolysis of di-t-butylberyllium, no evidence for the direct union of beryllium and hydrogen has been reported. It was thought that an examination of the reaction between magnesium and hydrogen and determination of the thermodynamic relations involved might have a bearing on this phenomenon. Also, the properties of magnesium hydride are interesting from an over-all periodic table viewpoint. The hydrides of beryllium and magnesium are usually considered to be intermediary between the saline, or …

The Extraction Of Scandium, Yttrium, And Lanthanum Using Various Monoalkyl Orthophosphoric Acids, Clarence Gerald Warren

Chemistry and Chemical Biology ETDs

The separation of lanthanum, yttrium, and the rare earth elements from their ores has been a challenge to the chemist for many years. The similarity in chemical properties has made their separation a problem of extraordinary difficulty. Fractional crystallization has been the classical method utilized in the past, although individual elements have been isolated by oxidation or reduction to other than the tripositive oxidation state (1). Recently ion exchange and solvent extraction methods have become more important as a means of separation of these elements. Both of these techniques depend upon fractional differences in the distribution of compounds or ions …

Absorption Of Antimony(Iii) And Indium From Anhydrous Acetic Acid By Ion Exchange Resins, Robert Tor Lofberg

Chemistry and Chemical Biology ETDs

Organic ion exchange resins are a comparatively recent development. In 1935 Adams and Holmes prepared the first ion exchange resin by polymerizing polyhydric phenols with formaldehyde. The condensation product exhibited definite reversible cation exchange properties. The success of this experiment led them to the development of the first anion exchange resin which was prepared by the polymerization of phenylenediamine with formaldehyde. The publication of these experiments inspired many similar investigations leading directly to the manufacture of the numerous ion exchange resins now commercially available.

On A Certain Subgroup Of The Group Of Isomorphisms, I, Of An Abelian Group Of Order Pn, And Type, Robert D. Pumford

Bachelors’ Theses

Any Abelian, G, of order pn, where p is prime and type (l,l,l,...) may be generated by a set of elements a1,a2,a3,...an each of order p. We shall now consider the group, I, o isomorphisms of G. If T is an isomorphism and a1, a2,...an are the independent generators of G, we have the following correspondence under T.

The Photoreduction Of Indigo Carmine Flavin Mononucleotide And Diphosphopyridine Nucleotide, By Illuminated Chloroplasts, M. Odell Hobbs

Theses and Dissertations

An investigation was made of the photoreduction of indigo carmine dye and flavin mononucleotide (FMN) by an illuminated sugar beet leaf homogenate in the presence of 2,6-dichlorophenolindophenol dye (DPIP) and ascorbic acid. DPIP and ascorbate were absolutely required for the reaction. Reconstitution experiments indicated a requirement for a heat-labile factor present in the supernatant fluid following centrifugation of the leaf homogenate. This factor activated the photoreduction of indigo carmine more than 20 times. The photoreduction of FMN was activated 2 times by this factor. Studies on the stoichiometry of indigo carmine photoreduction revealed that one mole of ascorbate was photooxidized …

The Use Of Chelating Agents In Inorganic Analysis, Richard K. Vitek

Masters Theses

"The objectives of this investigation were; (1) to improve the existing gravimetric method of analysis for palladium with dimethylglyoxime by adding EDTA to the solution to chelate interfering metal ions: (2) to develop a new and better gravimetric method of analyses for palladium with a different organic ligand and employing a chelating agent such as EDTA or NTA to remove the interference of foreign ions"--Introduction, page 2.