Physical Sciences and Mathematics Commons^™

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

This research was undertaken to study the pyrolysis of toluene in the vapor phase.

Many pyrolytic reactions of toluene have been studied by others, but the difficulty of controlling the reactions and the complexity of the products have not allowed much successful application of the results. The present work was an endeavor to better understand the reaction mechanisms and the intermediates involved in pyrolysis.

Specifically, the problem was to study the discrepancies between the results reported by M. Szwarc and by Hein and Mesee.

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 …

Thermodynamic Properties Of Water Absorbed On Silica, Conrad V. Hatch

Theses and Dissertations

The object of the work presented in this thesis was to obtain quantitative values of the thermodynamic changes in water upon adsorption by silica. Two methods were used. The first was a determination of the differential entropy and heat of adsorption independent of any theory of adsorption. The second method included a new interpretation of the "c" constant of the Brunauer, Emmett, and Teller Theory in which c was expressed in terms of the standard free energy of adsorption. The experimental data gave satisfactory results in determining the differential heat and entropy of adsorption. The results obtained in determining the …

Collector-Depressant Equilibria For The Flotation System Potassium Ethyl Xanthate-Potassium Cyanide-Molybdenite, Connell Bolton Roberts

Theses and Dissertations

This dissertation involves a study of the collector-depressant equilibria of the flotation system potassium ethyl xanthate-potassium cyanide-molybdenite, based upon mineral-air bubble contact measurements made by a modified captive bubble technique. The Cook theory of single site free acid adsorption is used to interpret the data. The standard free energies of adsorption of ethyl xanthic acid and hydrocyanic acid on molybdenite are calculated.

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.

The Kinetics Of The Exchange Between Diiodotyrosine And Iodine, Alfred H. Zeltzmann

Chemistry and Chemical Biology ETDs

The rate of exchange of iodine with diiodotyrosine in squamous solution was studied as a function of the concentrations of both reactants, of the pH, and of the temperature. The concentration of diiodotyrosine was varied from 0.0000475 to 0.01251 moles per liter and that of the iodine from 0.0000103 to 0.000395 moles per liter. The upper limits of concentration studied were determined by the solubilities of both the iodine and diiodotyrosine. The ratio of concentration of diiodotyrosine to that of iodine was varied from 227 to 0.5. the temperature was varied from 25.1 degrees C to 42.1 degrees C, and …

Geology Of Santa Ana Mesa And Adjoining Areas, Sandoval County, New Mexico, Paul E. Soister

Earth and Planetary Sciences ETDs

The foremost purpose of this report is to outline the general geology and geomorphology of the mapped area. Secondarily, the relationship of the Santa Fe formation of late Tertiary age to older strata is explored. Presence of basalts and other volcanics in the Santa Fe formation is shown. Evidence indicating the probable contemporaneity of part of the Chicoma volcanic group and of the Santa Fe formation is discussed.

The Thermodynamics Of Technetium And Its Compounds, James W. Cobble

Doctoral Dissertations

No abstract provided.

The Spieker Circle And Certain Related Configurations, Berthola Elmo Lumzy

Electronic Thesis and Dissertation

It was the purpose of the present study 1) to present the major known theorems concerning the Spieker circle; 2) to show the remarkable analogy between the Spieker circle and the nine point circle; and 3) to extend theorems of the Spieker circle and the definition of the Spierker circle to related configuration that are located outside the given triangle.

Plenoaste Crystals From An Olivian Basalt, Caballo Mountains, New Mexico, Charles Maxwell

Earth and Planetary Sciences ETDs

The thesis area lies along the eastern base of North Ridge which forms the northern part of the Caballo Mountains. This ridge rises abruptly, about 1,500 feet, above the considerably dissected lowland on which the area is located. The lowland lies near the head of Mescal Canyon and is dissected into the ridges and valley with a relief as much as 300 feet. The drainage is east and north into Mescal Canyon (Pl.2) which joins the Rio Grande just below Elephant Butte Dam.

Investigation Into The Synthesis Of Indazole, Max Peter Dreyfuss

Honors Theses

These investigations were undertaken in order to study the effect that various acyl or aroyl groups on o-toluidine have on the yield of indazole, when the latter is prepared by the methods of Barclay, et. al. (1) as modified by Rzeszotarski (23). In addition further information on the mechanism of the reaction and on the structure of indazole was sought from these data.

Electrodeposition With Graded Cathode Potential, William Mairs Earnest

Honors Theses

In a constant current electrolysis, which is the unusual method of determining a substance quantitatively by electrodeposition, a single metal, in solution, is plated out on the cathode of the electrolysis cell. The current is maintained fairly constant by adjustment, little attention is paid to the potential applied to the cell. This method may be used if there is only one metal in solution, or it may actually be used to separate two metals if one lies above and the other below hydrogen in the electromotive series. In this case, hydrogen is evolved at the cathode after the deposition of …

A Study Of The Reaction Of Portland Cement With Certain Acids, Robert Alfred Laudise

Honors Theses

Portland cement was treated with various concentrations of hydrochloric, acetic, and sulfuric acids. The reaction products, mixed gels of SiO2, Al203, and Fe2O3, were examined for commercial possibilities. Liquid absorption of organic dyes was used as a criterion of surface activity. When 10gm cement was reacted with 100m.l. of acid solution, it was found that the reaction went to completion at 3 molar HCl, 3 normal H2SO4, and about 7-9 molar HAc. The best absorbers for methylene blue were formed by the reaction of 2.5-3 molar HCl and 6-9 molar HAc. The absorption of some of these gels were carefully …

The Inhibition Of The Thermal Polymerization Of Styrene, William Russell Stoll

Honors Theses

In continuing the work of Cohen and Opitz the percent polymer formed by the inhibition of the thermal polymerization of styrene with chloranil at one hundred degrees is determined to be 0.0025%. The first polymer is precipitated by absolute methanol approximately twenty minutes before the end of the induction period. For polymer determination an analytical method is developed, which is applicable for concentrations between 0.001% and 0.022% by weight measures the solution turbidity after precipitation from the monomer. This method can be extended to 0.08% polymer. Polymer percentages to be measured in this manner greater than 0.02% were diluted with …

A Study Of The Setting Of Alkaline Silicic Acid Gels, Allen Mutimer Palmer

Honors Theses

This study of alkaline silicic acid gels was a continuation of the previous work done at Union College on alkaline silicic acid gels. The purpose of this study was to collect data on the time of set of various alkaline gels at different pH values and at different temperatures, and to find if any alkaline gels were thermally reversible.

A Study Of The Mechanism Of The Reaction Between Styrene And Tung Oil, Edwin Charles Shuttleworth Jr.

Honors Theses

An attempt to explain the mechanism of the reaction between styrene and tung oil by separation and analysis of its products is the purpose of this thesis.

Determination Of The Dipole Moment Of Indole, Robert George Dreyfuss

Honors Theses

The purpose of this research was to determine the dipole moment of indole, by a method that involves using the Yellow Springs Instrument Company’s Dielectric Constant Meter. The application of this new instrument made it necessary to determine its applicability and accuracy in this particular experiment. The experimental part of this research is comprised of the determination of the dipole moments of four compounds. The compounds and solvents used are as follows: 1. Meta-dinitrobenzene in benzene 2. Paranitrotoluene in dioxene 3. Benzotriazole in dioxene 4. D indole in dioxene B indole in benzene The first two compounds were used as …

Thallium Dithizonate, Bruno Jaselskis

Honors Theses

Attempts to establish a useful dithizone method in the determination of thallous ion have been carried on at Union College by Snyder (19). Because the previous work had not produced satisfactory results and because in general thallous dithizonates have not been studied, the following work, under Dr. W. G Ewing’s guidance, was undertaken.

Preparation Of Vanillic Acid And Some Of Its Metallic Salts, Elaine A. Dittmar

Bachelors’ Theses

Very little work has been done with vanillic acid and its derivatives since the time when the acid was first synthesized. There are usually good reasons why compounds showing such important properties as food preservatives have lain idle for over seventy-five years. It is of great. interest to know the reasons behind this idleness and also to attempt to prepare some of the derivatives heretofore unreported.

This is the purpose for which this thesis has been written; that a little more knowledge will be contributed to a relatively virgin field. Submitted are the preparation of vanillic acid and some of …

Collector-Depressant Equilibria In The Flotation Of Molybdenite, Robert Létrenne Andelin

Theses and Dissertations

This dissertation presents the results of research on the flotation system potassium n-amyl xanthate - sodium sulfide - molybdenite. The purposes of the research were (1) to determine the theoretical collector-depressant equilibria conditions of this system necessary for the flotation or depression of molybdenite, (2) to ascertain the mechanism of adsorption or the collector potassium n-amyl xanthate and the depressant sodium sulfide on molybdenite, and (3) to calculate the standard free energy of adsorption on molybdenite of the collector and depressant in this system. To accomplish these purposes it was necessary to develop a satisfactory experimental method for the controlled …

The Separation Of Ethylene Diamine, Morpholine, And M-Toluidine By Means Of Paper Chromatography, Domenick S. Bruno

Bachelors’ Theses

"No other discovery has exerted as great an influence and widened the .field of investigation of the organic chemist as much as Tswett's discovery. or Chromatographic Adsorption Analysis 1n 1906".

In 1910 Tswett's comprehensive work "Chromophylls in the Plant and Animal World" was published. Tswett's fundamental experiments consisted or extracting the color from dried leaves with petroleum ether. He poured the extract through a compressed column or finely powdered calcium carbonate. The column was attached to a filter flask and the solution drawn through. He found that the apparently homogeneous pigment separated into colored bands along the column as the …

Jade: Its Occurrences, Mineralogy, Geology, Uses And Technology, Robert L. Borton

Earth and Planetary Sciences ETDs

No abstract provided.

The Mechanical Production Of Zinc Dust, Charles A. Schroer

Bachelors Theses and Reports, 1928 - 1970

The object of this thesis is to produce zinc dust suitable for zinc leach purification, by direct application of a mechanical force on a stream of molten zinc.The project is a continuation of work done by Mr. D. S. Gleason, while working for his Master of Science degree in the spring of 1952.

The Sedimentary Petrography Of The Oil And Gas Producing Horizons In Montana, Patrick J. Donahue

Bachelors Theses and Reports, 1928 - 1970

Montana is an excellent oil province, as oil and gas are pro­duced from a wider range of beds in the geologic section than in any other district in the United States. (1,864) Commercial fields have been developed in Ordovician, Devonian, Mississippian, Pennsylvanian, Jurassic, Lower Cretaceous, and Upper Cretaceous. It is believed that by describing the physical characteristics of the producing horizons, and by placing this information in one compact volume, a better under­standing of oil and gas occurrence in Montana may be gained.

The Accessory Minerals Of Some Granitic Rocks Of The Boulder Batholith, Robert T. Donahue

Bachelors Theses and Reports, 1928 - 1970

Although the position of the Boulder batholith in space and time is well known, the modes of occurrence of various rock types and the inter-relationships between the petrographic types are not known in detail.

Flotation Of Huebnerite, Henry Albright

Bachelors Theses and Reports, 1928 - 1970

The development of suitable beneficiation processes for treating domestic low-grade tungsten ores is a problem now facing the mineral industry. While we are now consuming more tungsten than normally because of the defense program, we are no longer able to import ores from the world's principal source, China. The problem then, is to increase our domestic production so as to ac­quire a greater degree of self-sufficiency.

Geological Problems At Kerr Dam Lake County, Montana, Roger C. Rice

Bachelors Theses and Reports, 1928 - 1970

With an increased demand for power in Montana and sur­rounding territory, there is a need for existing power installations to produce more hydro-electric power. Kerr Dam, Lake County, Montana has been one of the dams selected for added output.The existing dam and power house installation with its two hydro-electric was finished in 1938, and has been producing power ever since.

The Construction Of An X-Ray Camera, Emil Bazarnicki

Bachelors Theses and Reports, 1928 - 1970

The major portion of the construction of the X-ray camera was performed in the machine shop of Montana School of Mines. However, some machine work had to be accomplished in the Butte High Machine Shop, as well as in the machine shop of the Anaconda Copper Mining Company.

Protective Refractory Coatings On Titanium Metal, Eugene F. Gibbs

Bachelors Theses and Reports, 1928 - 1970

The problem undertaken in this thesis concerns the development of a newer phase of metallurgy, namely the adaption of the strong, lightweight metal titanium to high-temperature uses. The primary objective of the investigation is to determine wheth­er the application of refractory coatings to titanium will pro­tect the metal from chemical reactions and corrosion at high temperatures.

The Birdie Mine Tungsten Deposit Butte Mining District, Silverbow County, Montana, Bernard A. Fahm

Bachelors Theses and Reports, 1928 - 1970

The importance of tungsten has encouraged the search for minerals of this metal, and consequently new deposits have been discovered, and known deposits have been re-examined. Western Montana has rather widespread deposits if low-grade types are also considered. Many deposits were known long ago, but abandoned because the use of tungsten was still in its beginning stage and therefore little attention was given to this type of mineral.