Digital Commons Network^™

The Synthesis And Reaction Of 4-Methyl-3, 4-Dihydro-2-Hpyran With N-Hexyl And P-Anisylmagnesium Bromides, George Canty Jr.

Tennessee State University Alumni Theses and Dissertations

No abstract provided.

Mechanism Of Adsorption Of Cations By Silicate Minerals, Milton Glen Armstrong

Theses and Dissertations

Adsorption of cations by clays has been a subject of investigation for many years. Many proposals have been advanced to explain this process of adsorption. Two proposals have been prominent in recent years. The Marshall "charged lattice" theory attributes adsorption of cations by clays to an electrostatic attration of the clay particles for cations. This charge on the clay particles is attributed to various isomorphic substitutions in the lattice of the clay which result in an unbalanced charge on the particle. This isomorphic substitution can take place either in the silicon-oxygen tetrahedra of the silicate structure or with the aluminum …

Collector-Depressant Equilibria In The Selective Flotation Of Sulfide Ores, Heber Ross Olson

Theses and Dissertations

This dissertation presents the results of a collector - depressant equilibria study of the flotation systems potassium n-amyl xanthate - sodium cyanide - molybdenite and ethyl zanthate sodium sulfide - molybdenite and the study of conditions necessary for the selective flotation of covellite, tetra-hedrite, bornite, chalcopyrite, molybdenite, marcasite and pyrite in the system ethyl xanthate and sodium cyanide; the conditions necessary for the selective flotation of pyrite, covellite, bornite, galena, chalcopyrite, active sphalerite, and molybdenite in the system potassium ethyl xanthate and sodium sulfide; the conditions necessary for the selective flotation of molybdenite and pyrite in the system of potassium …

Itaconic Acid Derivatives Of P-Amino Alkyl Sulfone, Wilbur B. Clarke

Electronic Theses and Dissertations

This investigation is concerned with the preparation of 1(p-R1 Sulfonyl)-phenyl-5-oxo-3-pyrrolidine carboxylic acid by direct fusion of itaconic acid with the respective p-Amino phenyl alkyl or aryl sulfone, and its continuation of work previously reported

An Investigation Of Some Changes In The Chemical Composition Of Arterial Tissue Which Correlate With The Development Of Arteriosclerosis, Richard Dee Strickland

Chemistry and Chemical Biology ETDs

Arteriosclerosis is one of the major health problems confronting people of middle and advanced age. The disorder, commonly called "hardening of the arteries", is a contributing factor in more deaths than any other ailment.

Studies In The Cinnoline Series, David B. Cox

Chemistry and Chemical Biology ETDs

Recent work by Castle and Kruse (16) has partially elucidated the range of reactivity of the chlorine atom in the compounds 4-chlorocinnoline and 4-chloro-6,7-dimethoxycinnoline. Condensations between the chlorinated cinnolines and certain phenylacetonitriles were found to proceed readily; however, condensations with compounds of the malonic ester type were unsuccessful. It was found that hydrolysis of the condensation product obtained from 4-chlorocinnoline and phenylacetontrile by hot 60% sulfuric acid caused decarboxylation of the intermediate acid, the final product being 4-benzylcinnoline. This compound has a formal resemblance to the basic ring structure of papaverine.

Chelation Of The Rare Earth Elements As A Function Of Ph Using Thenoyltrifluoroacetone, Hugh James Bronaugh

Chemistry and Chemical Biology ETDs

The rare Earth elements, or lanthanides, having atomic numbers 57 through 71 occupy only one space in the periodic chart of the elements. These fifteen elements, which have extraordinarily similar chemical and physical properties, are placed in group three of the periodic table, between barium of group two and hafnium of group four. This series of elements has been the subject of extensive study in the past. The development of atomic energy has significantly increased the interest in the rare earths in the past ten years.

Identification Of Certain Fatty Oils By Chromatographic Methods, G. Earl Newborn

Chemistry Honors Papers

This 29 page thesis reports on the efforts to apply columnar chromatography to the identification of a fatty oil and the separation of a fatty oil from a mineral oil.

Cyclization Of W-Tertiary Butyl Uramido Benzoic Acid, John R. Lovett

Chemistry Honors Papers

This 13 page thesis investigates the cyclization of w-tertiary butyl uramido benaoic acid and establishes the equation for the resulting reaction.

A Simple Apparatus For Demonstrating Bernouli's Principle, G. M. Wissink

Journal of the Minnesota Academy of Science

No abstract provided.

Corrosion Studies Of Pentachlorophenol, Robert F. Uhen

Bachelors’ Theses

The author’s interest in the field of corrosion was stimulated through the study of the basic metals in inorganic chemistry, and also through his contact with metals while working in the Heat Treating Department of a local manufacturing company.

A Polarographic Investigation Of The Simultaneous Determination Of Lead, Cobalt, And Manganese Found As Dryers In Paints, Michael Anthony Sweet

Bachelors’ Theses

In recent years, the field of instrumental methods of chemical analysis has been rapidly growing and expanding in every branch of chemistry. At the same time, more modern scientific methods have been replacing older classical methods of formulation in the paint industry. Thus it seems that a combination of the two would prove to be a definite impetus to both the paint industry and the field of instrumental analysis.

A general liking for the surface coatings industry combined with a curiosity of the potentialities of instrumental analysis induced this student to undertake the particular problem of this thesis. First hand …

A Preliminary Study Of Scale Prevention In Sea Water Evaporators By Various Dehydrated Grasses, Basil H. Tannel

Bachelors’ Theses

Although water is relatively abundant throughout the World, it presents a unique and interesting problem when considered in the light or Chemistry with its many and varied applications. One of these problems had its' incipience with the invention of Watt's steam engine. In short, it was the formation of scale in the boiler preventing an efficient heat transfer.

The Determination Of Chlorine In Alkyl Chlorobenzoates To Establish Their Identity And Purity, Clifford R. Berres

Bachelors’ Theses

Four years ago an investigation began at Marquette University with the purpose of determining the value of alkyl chlorobenzoates as derivatives for alcohols in characterization work. The outcome of this initial investigation was the preparation of thirty compounds previously unreported in the literature, namely, the methyl through decyl, nonyl excepted, ortho- and para-chlorobenzoates, and 2,4 and 3,4 dichlorobenzoates. The method of preparation and physical constants of these compounds were determined by Mr. Robert Johnson who presented a thesis on the "Preparation of Alkyl Chlorobenzoates and Their Application as Alcohol Derivatives" in June, 1949.

A continuance of this investigation was undertaken …

The Reaction Of Some Sodium Salts Of Fatty Acids And Benzoic Acid With Α-Bromobenzyl Cyanide, Richard W. Perkins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Fife (4) and O'Shaughnessy (12) have made a series of di-esters by allowing the sodium salts of various fatty acids to react with ethyl monochloracetate according to the following equation:

RCO₂Na ≠ ClCH₂CO₂C₂H₅ ---------> RCO₂CH₂CO₂C₂H₅ ≠ NaCl .

The mechanism of the reaction appears to be ionic and to involve the attack of an RCO₂^- ion on the carbon atom to which the chlorine atom is attached. As the RCO₂^- approaches this carbon atom the chlorine atom moves …

The Preparation Of The Heavy Metal Soaps Of Naphthenic Acids, Frederick H. Owens

Chemistry Honors Papers

This 13 page thesis examines the preparation of heavy metal soaps from purified naphthenic acids.

A Microcoulometric Study Of Adsorption On The Hydrogen Electrode, Ray Douglas Sothern

Master's Theses

Thie work was begun with the intention of studying the adsorption of organic compounds upon the hydrogen electrode. The fact that certain substances, even when present in extremely low concentration, will poison the electrode with which they are in contact shows clearly that these substances must be strongly adsorbed on the electrode surface. The problem or determining the amount absorbed at various concentration, temperatures, and pressures, however, required a method capable of detecting quantities of adsorbate in the ordor of 10^-11 moles.

Ceramic Uses Of Arkansas Nepheline Syenite, Harry J. Reynolds

Journal of the Arkansas Academy of Science

No abstract provided.

Ultraviolet Absorption Spectra Of Quinoxaline And Some Of Its Derivatives, Fred Dale Huillet

Theses and Dissertations

A long term research program into the chemistry of quinoxalines has been instituted at Brigham Young University with the aim of preparing the vinylquinoxalines so that their 1,4-addition reactions might be studied. The literature of quinoxaline chemistry has been thoroughly reviewed and assembled. Methods of preparing 2-methyl- and 2,3-dimethylquinoxaline have been studied and improved but all attempts to prepare the vinylquinoxalines have been unsuccessful. In the course of these attempts several compounds of unknown structure were prepared. The purpose of this investigation is to study the spectra of various known quinoxaline derivatives and to attempt to identify the unknowns by …

Itaconic Acid Derivatives Of P-Amino Alkyl, Alkyl Sulfone, Wilbur B. Clarke

Electronic Theses and Dissertations

This investigation is concerned with the preparation of 1(p-R2 Sulfonyl)-phenyl-5-oxo-3-pyrrolidine carboxylic acid by direct fusion of itaconic acid with the respective p-Amino phenyl alkyl or aryl sulfone, and is a continuation of work previously reported.

Studies Of The Kinetics Of Electrode Processes., George Louis Stiehl

LSU Historical Dissertations and Theses

No abstract provided.

Thiocyanate Complexes Of Osmium, Craig Albert Townsend Jr.

University of the Pacific Theses and Dissertations

Osmium is a hard grey brittle metal which scratches glass. It has a melting point of 2700[degree]C, and a specific gravity of 22.4, which is greater than any other known substance. The grey color of osmium resembles the grey color of iron and ruthenium. Osmium was discovered in 1803 by Tennant in the insoluble residue remaining after treating an alloy of the platinum metals with acid.

Osmium occurs in nature alloyed with the other metals of the platinum group. One type of alloy includes all six of the of the platinum metals, osmium, iridium, platinum, ruthernium, rhodium and palladium. Osmium …

The Effect Of Cross-Linkage On Internal Diffusion In Dowex-50 Ion Exchange Resin, John Paul Peterson Jr.

University of the Pacific Theses and Dissertations

As far back as the time of Aristotle sand filters were used to purify water. However it was not until the time of Thompson and Way (1848), two English agricultural chemists, that the idea of actual exchange of ions was proposed. Ion exchange has been investigated extensively, resulting in applications to softening of water, purification of sugar, separation of compounds, recovery of metals, many pharmaceutical separations and many others.

It has been proposed that the internal diffusion should be related to the internal structure of the ion exchange resin. The object of this research was to measure the internal diffusion …

A Study Of The Factors Which Influence Selectivity In Liquid Extraction., Robert Christie Binning

LSU Historical Dissertations and Theses

No abstract provided.

The Reaction Of Diphenylketenephenylimine And Phenyl-Lithium. Part I. The Bromo-2-Nitro-Benzoic Acids. Part Ii., Tillman Rupert Pullig

LSU Historical Dissertations and Theses

No abstract provided.

Acetic-Oxalic Anhydride. Part I. A Study Of Some N-Alkyl-Cyclohexylcarbinols. Part Ii., Walter Maurey Henley

LSU Historical Dissertations and Theses

No abstract provided.

The Urea Adducts Of Certain Esters Containing Twenty Carbons, Donald Eugene Johnson

University of the Pacific Theses and Dissertations

Urea has the interesting and unexpected property of forming solid complexes with many straight-chained organic compounds. So selective is the formation of these complexes with linear aliphatic compounds that it provides a means of separation form the analogous branched and cyclic compounds. Linear esters derived from normal saturated and unsaturated esters give adducts also but not to the same extent. Although many linear aliphatic compounds form adducts, the compounds so formed have varying degrees of stability depending on molecular weight, saturation and the shape of the molecule.

The purpose of this investigation is to determine the effect of the position …

A Study Of The Kinetics And The Free Radicals Involved In The Low-Pressure, Vapor-Phase Pyrolysis Of Toluene, Robert E. Williams

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 similarities 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 oxidization 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 …

The Separation Of Antimony 125 From Solutions Of Neutron Irradiated Tin Salts, Joseph D. Robinson

Chemistry and Chemical Biology ETDs

Because of the importance of high specific activities of radioactive species considerable experimental work has been done on the preparation of "carrier-free" tracers. In surveying the literature on the preparation of carrier-free antimony only one method was found. The method reported involves the deuteron bombardment of tin; solution of the target in agua regia; addition of cadmium carrier; precipitation of the cadmium as the sulfide which carries antimony, using oxalate ion to complex the tin; solution to the sulfides of cadmium and antimony in concentrated hydrochloric acid; distillation of tin from cadmium and antimony contained in in perchloric acid with …

Polargraphic Measurement Of Reaction Rates Of Diazonium Salts, Gregory W. Daues

Chemistry and Chemical Biology ETDs

If a colorimetric method is used for following the reactions by tracing the increase in dye concentration, only reactions which form soluble dyes can be studied. Gasometric techniques are limited in that a sample must be removed from the reaction vessel and the diazonium salt decomposed by means of a catalyst in order to measure the liberated nitrogen. The latter method of analysis lends itself more readily to studies of the rate of decomposition of diazonium salts under various conditions, such as, the presence of ultra-violet light or exposure to high temperatures.