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Analysis Of Mixtures Of Chlorine, Chlorine Dioxide And Chlorite, Ying-Chien Chu

Masters Theses

No abstract provided.

Kinetic Study Of The Formation Of Mixed Ligand Complexes Formed From Triethylenetetramine Nickel (Ii) And Bidentate Ligands, Burtrand Insung Lee

Masters Theses

No abstract provided.

Preparation And Properties Of Benzotropones And Benzohomotropones, Robert E. Suder

Dissertations

No abstract provided.

Isomerization And Dehydrocyclization Of 1,3-Pentadiene, Thomas E. Marcinkowski

Retrospective Theses and Dissertations

Piperylene concentrate is a complex mixture of 5-carbon unsaturated hydrocarbons obtained as a by-product when naphtha or gas oils are cracked. The major component in this mixture is 1,3-pentadiene. During the course of this study, a number of trials, utilizing liquid phase reaction conditions, were made to investigate the geometric isomerization of 1,3-pentadiene and its separation from the piperylene concentrate. Isomerization was accomplished employing catalytic amounts of iodine at temperatures ranging from 0°C to reflux. Using this method, the maximum amount of trans-1,3-pentadiene obtained was 70% as compared to 51% in the piperylene concentrate. Recovery of the product was 90%, …

Co2 Laser-Induced Decomposition Of Freon 113, Jeffrey Joseph Rusik

Honors Theses

Gasgeous freon 113, or CC12FCC1F2, was irradiated with a continous wave carbon dioxide infared laser. The rat of formation of CF2CC1F, a decomposition product, was monitored using an infared spectrometer. The initial rates or product formation were related to irradiation wavelength and power, and the laser induced reaction was related to pyrolysis decomposition. A computer program which calculates the temperatures in a laser beam is modified and applied to the irradiations performed. It is determined that bi- or triphotonic absorption is occuring and that the laser induced reactions are photocatalyzed. A reaction model is discussed which combines thermal excitation, multiphotonic …

Ozonolysis Of Certain Alpha, Beta-Unsaturated Carbonyl Compounds, Alan Howard Wynn

Honors Theses

One of the intermediates in the ozonolysis of alkynes is the α carbonyl carbonyl oxide. The Hull rearrangment mechanism suggests that the α carbonyl carbonyl oxide can then rearrange via a rotation and cuclization to an anhydride.

Peroxidase And Senescence, Michael Jay Chaskes

Honors Theses

Kinetin and α, α1 - dipryridyl prevented the rapid decrease of chlorophyll content in oat leaf intact segments senescing in the dark.

Synthesis Of Sterically Hindered Disasters, Richard A. Bankowitz

Honors Theses

This thesis examines the synthesis of two sterically hindered diesters, neopentyl glycol dipivaloate and ditert-butyl 2, 2-diethylmalonate. The implications of this hinderance for hydrolysis in basic medium are discussed. The neopentyl glycol diester of 2,2-dimethylpropanoic acid is prepared with little difficulty by reaction of the glycol with the acid chloride in the presence of pyridine. The process gives the desired ester in approximately 66% yield. The preparation of the ditert-butyl ester of diethylmalonic acid is also attempted by means of the acid chloride in the presence of pyridine. Preparation of the diethylmalonyl dichloride using acetonitrile as a solvent in most …

Kinetic Study Of The Chelate Ligand Unwrapping Reactions Of Sterically Hindered Gold (Iii) Complexes, James W. Thackeray

Honors Theses

The complexes [Au(Et2dien_H)Br]PF6, [AU(Me4dien_H)Br]Pf6, and [Au(Et3dien_H)Br]PF6 have been sunthesized and a kinetic study of their conjugate acids performed. This paper centers on the direct replacement of the tridentate ligang on the complex by bromide ion.

Preparation And Kinetics Of Chloro-1,4,7-Triethyldiethylenetriamine Gold (Iii), Paul Lawrence Sargent

Honors Theses

The square-planar complex has been synthesized and its aqueous solution chemistry investigated. The rate of bromide substitution for chloride has been studied along with the rate of the chelate un-wrapping reaction for the bromo-complex. These results aer compared with work on previously studied gold complexes.

Calculation Of Mono-Cyclic Molecular Structures Using Mindo/3, Peter Mark Felker

Honors Theses

Molecular geometries of selected, small cyclic compounds were calculated using the semi-epirical, S.C.F. molecular orbital method MINDO/3. Calculated geometries are compared with experiemental values to determine MINDO/3's effectiveness. It is found that the method has several systematic deficiencies. In Particular, carbon-oxygen single bond distances are calculated to be too short.

Study Of Cndo/2 For The Prediction Of Geometries Of Phosphorus-Containing Molecules, Mark A. Fraser

Honors Theses

The method of CNDO/2 is presently being used to study the mechanisms of hydrolysis of phosphate esters. The question, therefore, arises whether or not CNDO/2 can accurately predict the geometries of phosphorus containing molecules. Using an optimizer adapted from the method of Rosenbrock, 41 compounds were tested.

Examination Of The Acid Etching Process Used In Preventative Dentistry, Robert Charles Morgan

Honors Theses

Nuva-Seal is a bisphenol-A-glycidyl-methacrylate monomer which in its polymerized form seals a tooth to prevent carie formation. Prior to application the tooth surface is pretreated with an etching solution to increase the bond strength. The etchant solution is 50% by weight H3PO4 and 7% by weight Zn0. Previous investigations preformed at Union College have determined qualitatively that a substantial portion of enamel is removed by the acid pretreatment. In addition, an extensive literature search into the development of the etching process was performed in order to validate or repute its usefulness.

The Concentration And Speciation Of Sugars In Natural Waters, Minoo Shakerin Sweet

Dissertations and Theses

Due to the importance of carbohydrates in biological systems, many efforts have been made to develop a quantitative method for analysis of carbohydrates in natural waters. The low concentrations of dissolved sugars in natural waters require a sensitive analytical method. In this study, gas chromatography of alditol acetate derivatives of sugars was investigated for quantitative and qualitative analysis of individual dissolved sugars in natural waters. The alditol acetate derivatives of sugars give only one derivative for each sugar, yielding qualitative and quantitative results.

The detection limit was 25 nM for each sugar. Because of this very low detection limit, only …

Photon Counting System For The Determination Of Creatine Phosphokinase, Steven E. Dueball

Masters Theses

No abstract provided.

Preparation Of A Polymer Supported Cobalt (Ii) Schiff Base Catalyst, Susan L. Fuhrman

Retrospective Theses and Dissertations

Polystyrene bis(salicylaldehyde)-propylene-1,3-diiminato Cobalt (II) (salen) and Polystyrene bis(acetylacetone)-propylene-1,3-diiminato Cobalt (II) (BAE) were prepared stepwise from polystyrl chloride. The reaction series included substitution of the chloride with a malononitrile carbanion, reduction to a diamine, condensation to form a Schiff base, and complexation with Co(II) acetate to form the active polymeric material. Optimum conditions with regard to time, temperature, reaction ratios, and solvent were determined for each reaction. The ability of the polymer bound cobalt complex to oxidize 3-methyl indole was measure. The BAE catalyst yielded a large amount of the corresponding o-formylaminoacetophenone. However, the exact yield is not known because product …

Kinematics And Thermodynamics Of Nickel(Ii)-Glycine Complexes Using Carbon Magnetic Resonance, Donald Frederick Shepard

Chemistry and Chemical Biology ETDs

l- ¹³C glycine was studied in nickel(II) solutions using carbon magnetic resonance (CMR). The carboxy bound nickel(II)-glycine complex and the kinetics of complexation between aquated nickel(II) ion and aquated glycine are described. It has been hypothesized that solutions containing no complexation higher than the chelated mono nickel(II)-glycine complex contain five magnetically different glycine species. The effects of these five magnetically different glycine species on the CMR spectra of the nickel(II)-glycine solutions are discussed.

A Study On Gaseous Ebullitions Of De Gray Reservoir, Arkansas, David Pinkston

Honors Theses

This study was undertaken in order to determine the nature of and the factors that influence the gaseous ebullitions of De Gray Reservoir near Arkadelphia, Arkansas during a yearly cycle.

Two major types of gaseous ebullition are described in the literature. The first has to do with the production and ebullition of elemental oxygen from photosynthesis (Porcella et al., 1975). Hutchinson (1957) predicts that the formation of oxygen bubbles in this manner is limited to very shallow, well lighted, warm waters.

The second type of gaseous ebullition involves the anaerobic digestion of organic matter (Reeburgh, 1969). Anaerobic conditions exist in …

I. Extracellular Metabolites From Coprinus Macrorhizus Microsporus. Isolation And Characterization Of Hydroxylagopodin B. Ii. The Cell Wall Composition And Structure Of Coprinus Macrorhizus Microsporus, Carey Bernard Bottom

Doctoral Dissertations

“A purple pigment excreted into the culture medium of a mutant strain of the basidiomycete, Coprinus macrorhizus var. microsporus (ATCC 34960) has been isolated and characterized as hydroxylagopodin B based on ultraviolet, infrared, and mass spectral data. A wild-type strain of C. macrorhizus microsporus does not produce the purple pigment, however it does produce lagopodin B which is yellow in solution. Identification of lagopodin B was based on its melting point, the purple color of its alkaline solution, the mass spectrum, and mobility equivalence with a standard by thin-layer chromatography. The production of hydroxylagopodin B in the mutant strain is …

Separation Of 1,3-Pentadiene With Molecular Sieves, Steven R. Schwinn

Retrospective Theses and Dissertations

The feasibility of separating piperylene (1,3-pentadiene) from a mixture of five-carbon olefins and diolefins with Linde 5A Molecular Sieves was investigated. Olefins and especially diolefins are very reactive and tend to polymerize on the highly polar adsorptive surface thereby clogging the pores of themolecular sieve. It is believed that the acid sites within the zeolite cages catalyze this polymerization reaction and that poisoning of these sites by adsorption of a nitrogenous base (ethylenediamine, dimethylamine or ammonia) or hydrogen sulfide inhibits the formation of polymers. Two criteria were used in the evaluation of the polymerization inhibitors tested. First, a series of …

Stripping Platinum Metals From Catalytic Converter Units By Use Of Promoted Gas Phase Chlorine Attack, James Harold Finckbone

Retrospective Theses and Dissertations

A gas-phase system to oxidize and remove the platinum and palladium from automotive catalytic converter units was studied. The effects of varying reaction temperature, time and reactant gas concentration upon yields were monitored using a colorimetric procedure based on the regent p-nitroso-N, N-dimethyl amiline. Chlorine plus carbon monoxide at 700°-900°C. displayed the most promise for commercial application.

Matrix Isolation Studies Of Reactions Of Atomic Oxygen, Kwo-Tai Richard Sun

University of the Pacific Theses and Dissertations

The research reported here deals with a study of the reaction of atomic oxygen in the first excited electronic state with hexafluoroacetone (HFA). Matrix Isolation (MI) Spectroscopy was used to elucidate the reaction.

The Systhesis And Photolysis Of 1-Phenylcyclohexaneacetic Acid Azide, Jack P. Mourad

Dissertations and Theses

The aim of this research project was to study the possible synthesis of the morphine analog 3-oxo-5-phenylmorphan via the photochemical cyclization of the acyl azide of 1-phenylcyclohexaneacetic acid.

A Polarographic Study Of Fe(Ii) And Fe(Iii) Complexes With Catechol, Wen-Tang Shen

Dissertations and Theses

A study of the anodic polarography of catechol in 0.100 F sodium perchlorate is presented. A new wave is observed in alkaline solutions which is different from the simple oxidation wave of catechol to ortho-quinone observed by previous workers. The importance of buffer materials is discussed and a possible explanation of the new wave is suggested.

A study of the polarography behavior of Fe(II) and Fe(III) in the presence of catechol is reported. In the case of reduction of Fe(III) in the presence of catechol, two steps occur at about -1.5 and -1.8 volts (vs. SCE) at pH higher than …

Esculin Hydrolysis In The Enterobacteriaceae, Jane Shigeko Okada

University of the Pacific Theses and Dissertations

Esculin hydrolysis, as mentioned earlier, is now a recognized test in the identification of Group P enterococci. However, its use as a taxonomic tool in differentiating the genera and species of Enterobacteriaceae has not been widely accepted, partly because of the conflicting reports in the literature and partly because of the availability of more reliable tests. Some commercial kits (MS-2, Abbott Laboratories, Dallas, Texas; Micro-Id General Diagnostics, Morris Plains, New Jersey), however, have incorporated it among their battery of biochemical tests.

The nature of the enzyme has not studied for bacteria other than the KES group and E.coli.

Because of …

Preparation Of N,N-Dimethylhydrazones And 1,1-Dimethylpyrazolium-5-Oxides, Tso-Ping Li

Masters Theses

The purpose of this study was to prepare the 1,1-dimethylpyrazolium-5-oxides from a variety of N,N-dimethylhydrazones which can be prepared from the corresponding β-ketoesters.

Substitution of a methyl group at α-position of β-ketoesters makes the formation of N,N-dimethylhydrazones more difficult. The electron-withdrawing group (-NO₂) and the electron-releasing group (-OCH₃) as a parasubstituent of the benzene ring have the electrostatic effect to the nucleophilic attack of dimethylhydrazine to form the N,N-dimethylhydrazones.

It was found that N,N-dimethylhydrazones exist as a mixture of keto and enol tautomers based on the ir and nmr spectra. A semiquantitative analysis of the tautomerism …