Physical Sciences and Mathematics Commons^™

A Colorimetric Coulometer, Clayton C. Roth

Master's Theses

In the study of many electrochemical processes, such as, surface adsorption on electrodes, a simple, rapid, and relatively accurate coulometer that will measure .01 to 1.0 coulombs, would be extremely useful. This project was commenced to investigate the feasibility of an entirely different approach for coulometric analysis for application in this range.

This new type of coulometer utilizes a colorimeter for determining the amount of coulombs passed through coulometer cell. Consequently, any electrode process which of its own nature is color-producing, or a process which, in turn, can actuate a color indicator, is a potential reaction for this colorimetric couloumeter.

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 Thesis and Dissertation

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

The Catalytic Power Of Portland Cement Gels, Constantine Aloysius Neugebauer

Honors Theses

For several years research has been done at Union College investigating the possibility of using Portland Cement as a chemical raw material. Investigations by Clark in 1951 indicated that vigorous reactions take place when Portland cement and strong acids are mixed.

Studies On "Ludox" Silica Sol, Edward Francis Weyand

Honors Theses

The work presented in this paper is an extension of the work done by Petrucci in 1950. Here we wish to consider the process of gelation of Ludox by measuring the change in surface tension during gelation and also the possibility of treating BiO2-H2O-alcohol systems on a triangular phase diagram.

A Study Of Gel Formation With Sodium Methyl Siliconate, Alan Robert Winterberger

Honors Theses

This study of sodium methyl siliconate is the first done with this compound at Union College. It was believed that gels could be produced with sodium methyl siliconate and the object of this work was to verify the assumption. After the gels were obtained, they were to be investigated in the same way as many previous workers have done with sodium silicate.

Ultraviolet Spectrophotometric Determination Of Metals With Thiocarbanilide, John Jeremiah Gritmon

Honors Theses

The ultraviolet absorption spectra of thiocarbanilide (diphenylthiourea) were determined in aqueous solutions of varying acidity. A correlation between the absorption spectra and data obtained has been attempted.

Szilard-Chalmers Reactions, Anita Camilli Mewherter

Honors Theses

Since discovery of radioactivity at the turn of the century, the use of radioactive isotopes has become increasingly significant to research in the fields of chemistry, biology, botany, and medicine. An important use of these radioactive isotopes is the tracer or indicator method. For example, a portion of radioactive potassium may be added to a sample of of stable potassium to be studied. The fact that a given isotope is radioactive does not, in most cases, affect its chemical properties. The presence of the active isotope allows the potassium now to be followed through a chemical or biological process. This …

The Catalytic Vapor Phase Alklation Of Phenol, Robert Andrew Clendinning

Honors Theses

The purpose of this research is to study the reaction between ethyl alcohol and phenol over a chemically activated alumina catalyst at several temperatures. The reaction of phenol and ethyl alcohol is also studied over the support used in preparing the activated catalyst to determine the catalytic activity of the support. An attempt is also made to correlate the data obtained by previous workers at Union College, who have studied the reaction between phenol and methyl alcohol and the reaction between phenol and ethyl alcohol.

A Study Of The Oxidation Stability Of Lubricating Oils, Frank Albert Pepe

Honors Theses

This past year, research work was done on the oxidation of lubricating oils. Since this is the first year that this research project has been carried out, our work was mainly directed towards finding ways of attacking the study of the oxidation of lubricating oils. We have found a few paths which warrant further investigations.

A Study Of The Thallium Dithizone Complex Using Radioactive Tracer Techniques, Ferdinand J. Schuette

Honors Theses

In the present work, use has been made of a radioactive isotope of thallium as a tracer in the study of the thallium dithizone complex.

Reactions In The Synthesis Of Indazole, John Earl Sigsby Jr.

Honors Theses

This work was undertaken in order to study the reactions that lead to the formation of Indazole. There are many possible variations that effect the final product. Some of them are studied here, such as the effect of heat upon the initial reaction, change of solvent, and the decomposition of the nitroso intermediate.

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.

The profound alteration in the physical properties of arteries which comes about as a result of the sclerotic process suggests that equally important changes may take place in the chemical composition of the arterial tissue.

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.

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.

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

Electronic Thesis and Dissertation

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.

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.

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 …

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

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.

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

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.

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 …

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 …

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 …