Index Catalog // ScholarsArchive@OSU

Kinetics of thermal decomposition of tungsten hexacarbonyl

Creator:: Knapp, Samuel Boyd
Abstract:: The thermal decomposition of tungsten hexacarbonyl was investigated in an apparatus which allowed a solid sample of the material to be sealed into a preheated batch reactor. Because the reaction occurs with an increase in the number of moles of gas, it was possible to monitor the progress of the...
Resource Type:: Dissertation
Full Text:: factors were 39.6 to 45. 8 kilo- calories per gram mole and 10 13, 7 to 10 15. 8 per second

Modeling and simulation of CF₄/O₂ microwave plasma afterglows

Creator:: Camara, Amadou Tidiane
Abstract:: A gas phase kinetic model for the CF₄/O₂ microwave discharge plasma and afterglow of our laboratory has been developed. A reaction pathway identifying the major chemical reactions is proposed. The rate coefficients of the electron impact dissociation reactions are determined at three different plasma powers using both published electron molecule...
Resource Type:: Masters Thesis
Full Text:: torr and 100 W 5.5 Calculated CF4 conversion as a function of mole % CF4 in 62 the feed for data

Photochemical reduction of carbon dioxide in aqueous and ionic liquid solutions in a microreactor with TiO₂ catalyst; experiment and modeling

Creator:: Campbell, Travis J.
Abstract:: Microtechnology was used to study the chemical reduction of dissolved carbon dioxide into useful products. A novel TiO₂ photocatalyst was used to activate the reaction under ultraviolet irradiation. CO₂ was dissolved in aqueous and 50% BMIM-BF₄ (ionic liquid) solutions. The introduction of an ionic liquid increased the solubility of CO₂...
Resource Type:: Masters Thesis
Full Text:: , 2011 Title: Photochemical Reduction of Carbon Dioxide in Aqueous and Ionic Liquid Solutions in a

Determination of barriers to internal rotation from low temperature heat capacity data

Creator:: Simpson, Kenneth Owen
Abstract:: A method by which barrier heights in potential functions hindering internal rotation in organic molecules can be obtained solely from thermal data for the solid phase is studied. The observed heat capacities are analyzed in terms of contributions from the lattice vibrations, the intramolecular vibrations, the expansion of the lattice,...
Resource Type:: Masters Thesis
Full Text:: trifluoromethanethiol, Calculations show that the barrier values are 540, 340, 280, 1650, and 1630 cal /mole for the

A computer model of two component mass transfer from single rising gas bubbles in water

Creator:: Gilson, Thomas L.
Abstract:: Mass transfer from a single rising gas bubble in water may be analyzed by numerical methods. In this study the simultaneous differen- tial equations which describe two component mass transfer from a rising gas bubble are solved by numerical integration. This is accomplished using a computer model which employs a...
Resource Type:: Masters Thesis
Full Text:: , composition, and the total number of moles present in the bubble at any time. The bubble may contain up to

Conversion of glucose to hydrogen gas by supercritical water in a microchannel reactor

Creator:: Goodwin, Aaron K.
Abstract:: Glucose was gasified in supercritical water within a microchannel reactor at 650°C 750°C, and 250 bar to yield H2 rich gas with a low concentration of CO. The feed glucose concentration was 0.1 M. Two microchannel reactor configurations were tested at fluid residence times ranging from 0.5 sec to...
Resource Type:: Masters Thesis
Full Text:: techniques. Hydrogen yields averaged 5.7 ± 0.29 and peaked at 6.3 moles of hydrogen gas produced per mole

Solid-vapor equilibria of hafnium and zirconium tetrachlorides

Creator:: Landsberg, Arne
Abstract:: The chemically similar elements hafnium and zirconium occur together in nature. Because of their very dissimilar nuclear properties it is of commercial importance to separate them for use in the atomic energy field. One or more of the steps in the separation and purification processes presently used involve the volatile...
Resource Type:: Dissertation
Full Text:: Solid-Vapor Equilibria of Hafnium and Zirconium

Oxidation of hydrocarbon in a carbon nanotube supported corona discharge in micoreactor : oxidation of ethylene

Creator:: Alanazi, Yousef M.
Abstract:: Population growth driven sustainability issues, including the food resource issue, are pressing problems in need of attention. The goal of the present thesis is to examine the ability of an electric non-thermal plasma based microreactor to destroy ethylene, a known plant hormone responsible for losses in the range of 20%...
Resource Type:: Masters Thesis
Full Text:: ethylene, and this is reflected in the energetic efficiency of the system, with about 3x10-10 moles

Study of Garnet Type Electrolyte Li₇La₃Zr₂O₁₂ Structure and Electrochemical Performance

Creator:: Wang, Yan
Abstract:: Cubic phase Li₇La₃Zr₂O₁₂ (LLZO) is a promising solid electrolyte for all solid-state lithium-ion battery, due to its reasonable ionic conductivity, stable against metallic Li, wide chemical window, and thermal and chemical stability. The main aim of this thesis is to investigate the influences of different synthesis methods on the structure...
Resource Type:: Masters Thesis
Full Text:: Type Electrolyte Li7La3Zr2O12 Structure and Electrochemical Performance. Abstract approved

Nonthermal Plasma Microreaction Engineering for Gas and Liquid Processing

Creator:: Pommerenck, Justin
Abstract:: Atmospheric pressure plasma is non-thermal at millimeter to micrometer separations. It represents an alternative low exergy initiator of many chemical reactions. In many instances heat, light or sound are not efficient providers of the necessary energy to overcome chemical activation barriers. The focus of this research is applying dc nonthermal...
Resource Type:: Dissertation
Full Text:: . Title: Nonthermal Plasma Microreaction Engineering for Gas and Liquid Processing. Abstract

Thermally activated electrochemical cells using a stabilized zirconia electrolyte

Creator:: Clark, Dwight Pocock
Abstract:: The performance of solid metallic anodes on a solid electrolyte was determined experimentally and data on cell current, cell voltage, open-circuit cell potential, and cell energy are presented. Fifteen-mole percent calcia-stabilized zirconia was used as the electrolyte, a platinum-oxygen electrode was used as the cathode, and 1000° C was the...
Resource Type:: Dissertation
Full Text:: and data on cell current, ceIl voltage, open-circuit celI potential, and cell energy are presented

Absorption of oxygen in water using a multi-stage, crosscurrent packed column

Creator:: Davis, Daniel S. (Daniel Scott), 1958-
Abstract:: A multi-stage, crosscurrent column, packed with Pall rings, was employed for oxygen absorption from an oxygen-rich air phase by contacting with water. Mass transfer data were collected for the column using 6 and 12 baffles and employing a partial gas phase recycle. Data were also collected from a countercurrent column...
Resource Type:: Masters Thesis
Full Text:: the gas stream kg/kg mole 11 Z = humidity, kg H20/kg dry air The constants K1 and K2, used in

Reactions of glucose in H-Y zeolite catalysts

Creator:: Lourvanij, Khavinet
Abstract:: Y-Zeolite catalysts have the potential to promote the shape-selective conversion of glucose to oxygenated hydrocarbons at fairly low temperature (100 to 130°C). Reaction of glucose solution with H-Y Zeolite catalyst powder was carried out in a well-mixed batch reactor. This reaction was studied as a function of reaction time (0...
Resource Type:: Masters Thesis
Full Text:: /mole glucose, also occurred at the same conditions after 75 min (Baugh and McCarty, 1988). Fructose

Removal of cadmium ions by porous chitosan beads : effects of acylation & crosslinking on material properties and adsorption isotherms

Creator:: Hsien, Tzu-Yang
Resource Type:: Dissertation
Full Text:: -NH2 groups within the gel bead X, moles of glutaric dialdehyde crosslinked per total mole of -NH2

Sequential and competitive adsorption of BSA and β-lactoglobulin, and their resistance to exchange with [sigma]-lactalbumin and β-casein

Creator:: Nasir, Adil
Resource Type:: Masters Thesis
Full Text:: Master of Science in Chemical Engineering presented on July 5th ,1995. Title: Sequential and

CdS nanocrystalline thin films deposited by the continuous microreactor-assisted solution deposition (MASD) process : growth mechanisms and film characterizations

Creator:: Su, Yu-Wei
Abstract:: The continuous microreactor-assisted solution deposition (MASD) process was used for the deposition of CdS thin films on fluorine-doped tin oxide (FTO) glass. The MASD system, including a T-junction micromixer and a microchannel heat exchanger is capable of isolating the homogeneous particle precipitation from the heterogeneous surface reaction. The results show...
Resource Type:: Dissertation
Full Text:: (Mw = 53.49 g/mole), and 4.16 ml of 14.82 M (28 wt%) NH4OH in DI water. The total volumn was added

Reaction kinetics and mass transport in the electroless deposition of copper

Creator:: Ninosky, Joseph M.
Resource Type:: Masters Thesis
Full Text:: and Mass Transport in the Electroless Deposition of Copper. Milo Koretsky Electroless copper

Detailed analysis of the hydrogen sulfide production step in a sulfur-sulfur thermochemical water splitting cycle

Creator:: Caple, Kevin R.
Abstract:: The production of hydrogen has been one of the most heavily studied, energy related fields over the past half century, yet few methods are commercially or economically viable and none are currently sustainable. Of those aiming at the sustainable production of hydrogen using renewable resources, perhaps the most widely studied...
Resource Type:: Dissertation
Full Text:: ( ) of 7.65E+14 min -1, while for the HSP reaction, they were determined to be 117.09 kJ/mole and 7.73E

Enhancement and modeling of cryogenic solid-state hydrogen storage systems with a novel microchannel thermal management device

Creator:: Loeb, Christopher S.
Abstract:: Compact storage systems demonstrating increased hydrogen storage capacity are the key to advancing the growth of the hydrogen economy throughout the world and reducing the global dependence on fossil fuels for transportation. The use of highly porous adsorbent materials for reversible hydrogen storage is a promising pathway towards achieving storage...
Resource Type:: Dissertation
Full Text:: Enhancement and Modeling of Cryogenic Solid-State Hydrogen

Solution-based deposition of functional thin films : development of a glucose biosensor and thermal processing of CZTS nanoparticle films

Creator:: Durgan, Christopher J.
Abstract:: The development of solution-based methods for deposition of different thin film material is presented as an alternative to high cost vacuum-based methods. For certain materials, vacuum techniques are unsuitable for processing. Additionally, vacuum-based processes present high capital costs associated with equipment, and slow processing times. Atmospheric pressure solution based techniques...
Resource Type:: Masters Thesis
Full Text:: : Development of a Glucose Biosensor and Thermal Processing of CZTS Nanoparticle Films AN

Phase equilibria of solid metal salts and their vapors

Creator:: Nelson, Robert John
Resource Type:: Masters Thesis
Full Text:: a precision of better than ± 1.0 mole percent hafnium. The data are tabulated in Table 1, and

Reflection and Dissection in Engineering Education : Exploring Critical Elements of Active Learning and their Roles in Course Structures

Creator:: Keeler, Jessie
Abstract:: This thesis focuses on active learning through four different studies that include metacognitive and cognitive aspects of learning designs to support active learning and a contextual analysis of the implementation of teaching tools used in active learning. The first three investigate important elements of active learning whereas the fourth study...
Resource Type:: Masters Thesis
Full Text:: vocabulary that goes into defining systems and processes The muddiest point was pounds/pound mole. Is

Dynamics and control of a heat integrated distillation column with side heat exchanges

Creator:: Patil, Sadanand R.
Abstract:: One of the alternative energy-saving methods in a conventional distillation process is the use of side (intermediate) reboiler and/or condenser for a portion of the overall heat load. A nonlinear differential equations model was developed to describe the dynamics of a typical binary distillation process with and without the side...
Resource Type:: Masters Thesis
Full Text:: Dynamics and control of a heat integrated distillation

Phase behavior of multicomponent mixtures of complex molecules in supercritical fluids

Creator:: Hassan, Ali (Ali Humaid)
Resource Type:: Dissertation
Full Text:: experiment k, and rzi k is the total number of moles of component i in experiment k. This mole balance is a

Degradation of N-Nitrosodimethylamine Using Photo-Catalysis and Microreactor Technology : Experimentation and Modeling

Creator:: Omar, Mohamed
Abstract:: The cleanliness of water is a major issue with regards to humanity's continued survival. The chlorination and chloro-amination of water is essential to the creation of microbiologically clean water. However these processes also give rise to oxidative byproducts such as nitrosamines. In particular, due to its high toxicity, N-Nitrosodimethylamine (NDMA)...
Resource Type:: Masters Thesis
Full Text:: presented on December 15, 2015 Title: Degradation of N‐Nitrosodimethylamine Using Photo‐Catalysis and

Chemistry and chemical process studies of fluoride removal in a silicon wafer manufacturing wastewater treatment plant

Creator:: Laothumthut, Punnchalee
Resource Type:: Masters Thesis
Full Text:: degree of Master of Science in Chemical Engineering presented on March 20, 1996. Title: Chemistry and

Kinetic and equilibrium analysis of metal ion adsorption onto bleached and unbleached kraft pulps

Creator:: Yantasee, Wassana
Abstract:: Most metal ions have negative impacts on pulp mill operations. The concentrations of metal ions on pulp fibers and in washwaters rise significantly with increased wastewater recycling. The development of technology to remove these metal ions requires an understanding of how metal ions are bound to pulp components. It is...
Resource Type:: Dissertation
Full Text:: Kinetic and Equilibrium Analysis of Metal Ion Adsorption onto

Diffusion coefficients of propanol and methanol in mixtures of air and argon

Creator:: Kim, Dong Suk
Abstract:: By an Arnold cell technique, the diffusion coefficients of propanol and methanol in mixtures of air and argon system have been determined. The carbon tetrachloride-air system was also studied to verify the reproducibility of the experimental method. The diffusion coefficients were compared with experimental values when available and with values...
Resource Type:: Masters Thesis
Full Text:: ; and yB , yC, etc. , are the mole fraction of the components in the mixture. yB = 0. 6666 y = O

Mechanism and equilibrium modeling of aluminosilicate scaling in alkaline media

Creator:: Gasteiger, Hubert A.
Abstract:: Problems with aluminosilicate scales in pulp and paper recycle streams create an interest in the formation mechanism and the chemical equilibrium of aluminosilicates. Evaluating solubility data from a system containing Na⁺ CI⁻, and OH⁻ ions as well as aluminium and silicon compounds, allowed to elucidate the characteristics of the aluminosilicate...
Resource Type:: Masters Thesis
Full Text:: total amounts of aluminium and silicon were designed to yield solutions of 0.1 moles/lit in respect to

Diffusion coefficients of isopropyl alcohol in binary and multicomponent gas systems involving air and argon

Creator:: Lee, Sung Chun
Abstract:: Diffusion coefficients for isopropyl alcohol-air, isopropyl alcohol-argon, isopropyl alcohol-mixture of argon 1 : air 1, isopropyl alcohol-mixture of argon 1 : air 2, and carbon tetrachloride-air system were determined, using an Arnold cell technique. The measured carbon tetrachloride-air system diffusion coefficient was compared with previously measured values to verify the...
Resource Type:: Masters Thesis
Full Text:: Diffusion coefficients of isopropyl alcohol in binary and

Surface renewal rate for the absorption of odoriferous sulfur compounds in a wetted wall column

Creator:: Hovey, Leonard LeRoy
Resource Type:: Dissertation
Full Text:: - tion 1) has an enthalpy of activation of only 11,300 calories per gram mole and the reaction of methyl

Simultaneous homogeneous and heterogeneous chemical reaction kinetics : thermal decomposition of nitrous oxide on a gold surface

Creator:: Halladay, Jeremy Brooke
Resource Type:: Dissertation
Full Text:: decomposition which occurs via N20 0. NO + 2N2. = moles NO formed per mole N20 decomposed. n1 = nitrous oxide

Functional polymers and proteins at interfaces

Creator:: Schilke, Karl F.
Abstract:: Functional polymers and proteins at interfaces and surfaces are of fundamental importance for biomaterials, biocatalysis and microreactor applications. Candida antarctica lipase B immobilized on poly-DL-tryptophan tethers showed 30x higher specific activity in aqueous and non-aqueous media than the same enzyme adsorbed or covalently bound directly to the surface. An excess...
Resource Type:: Dissertation
Full Text:: presented on 30 November, 2009. Title: Functional Polymers and Proteins at Interfaces Abstract

Ammonia absorption from entrained bubbles produced by liquid

Creator:: Ogbonnah, Dominic Jude
Resource Type:: Masters Thesis
Full Text:: control volume is V liters and its concentration is C1 liter g moles , the rate of accumulation of

β-Lactoglobulin adsorption equilibrium at low- and high-energy surfaces

Creator:: Al-Malah, Kamal Issa Masoud
Abstract:: Ellipsometry was used to study the effects of surface energetics and temperature on the equilibrium adsorptive behavior exhibited by β-lactoglobulin. β-Lactoglobulin isotherms at 25, 37, and 55°C were constructed for this purpose. The surfaces of acrylic, polycarbonate, polyester, glass, and #304 stainless steel were contacted with protein solutions of varying...
Resource Type:: Masters Thesis
Full Text:: β-Lactoglobulin adsorption equilibrium at low- and high

Structure-Property Relationships of Supported Palladium and Rhenium Oxide for the Alkane Rearrangement of Hydrocarbons and Deconstruction of Polyethylene via Tandem Dehydrogenation and Olefin Metathesis

Creator:: Moore, Selena C.
Abstract:: The rapid accumulation of plastic waste in landfill, waterways and oceans is becoming a critical problem, one that current recycling technologies are not capable of solving. Recent proposed approaches in the depolymerization of waste plastics employ an Olefin-Intermediate Process (OIP), where feedstocks like polyolefin plastics are ‘activated,’ producing an olefin...
Resource Type:: Masters Thesis
Full Text:: : Structure-Property Relationships of Supported Palladium and Rhenium Oxide for the Alkane Rearrangement of

A new apparatus for studying mass transfer and reaction between two fluid phases

Creator:: Godfrey, James Hendricks
Resource Type:: Dissertation
Full Text:: instantaneously and irreversibly with b moles of B in solution. At steady state the rate of transfer of A to the

An executive for simulation of process dynamics and control

Creator:: Olgun, Ferdi Tahir
Abstract:: A simple package of routines that can be easily implemented in small minicomputers used in process control, was developed to simulate dynamic systems and computer control of simple dynamic systems found in the process industries. Two different systems, a gas absorber and a fifth-order transfer function were chosen as processes...
Resource Type:: Masters Thesis
Full Text:: with a rate of X3 = 0.4 lb. moles/min. The equilibrium relation at 25°C and 1 atm is: y = 27X 0.00324

Chemical reaction studies by frequency response methods

Creator:: Knudsen, Robert Allen
Abstract:: A method for measuring chemical reaction rates in order to distinguish between different reaction mechanisms is presented. This method was used to study zero -, first- and second -order reactions by analyzing the output response to a sinusoidal input of reactant concentrations in an isothermal continuous stirred tank reactor. The...
Resource Type:: Masters Thesis
Full Text:: constant, hr-1 CD = concentration of reactant D, moles /ft 3 and CE= concentration of reactant E, moles

Molecular and rheological characterization of hyaluronic acid : determination of its role in thrombin-catalyzed fibrin clotting and viscosupplementation of joints

Creator:: Barrett, Brandon J.
Abstract:: Three samples of the biopolymer hyaluronic acid (HA) were characterized in the following manner: the molecular weights were obtained via multi-angle laser light scattering; the intrinsic viscosities were calculated through dilute solution viscometry, and the rheology of HA solutions was determined with constant rate rotational viscometry and dynamical mechanical testing....
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Chemical Engineering presented on May 17, 2002. Title: Molecular and

Industrially-situated project-based learning : a study of feedback and diffusion

Creator:: Gilbuena, Debra M.
Abstract:: The Virtual Chemical Vapor Deposition (CVD) Process Development Project provides the context for the two areas of the research presented in this dissertation. The first area, generally referred to as feedback in this dissertation, focuses on student learning and the interactions of students and instructors that take place in the...
Resource Type:: Dissertation
Full Text:: of Feedback and Diffusion AN ABSTRACT OF THE DISSERTATION OF Debra M

CO₂ Reduction in Microscale-Based Corona Reactor : Experiments and Modeling

Creator:: Miao, Yu
Abstract:: Global warming is becoming an increasingly important environmental concern and CO₂ is considered as the major cause of global warming. Creating useful applications for CO₂ would generate alternatives to merely venting CO₂ to the atmosphere, and decreasing the carbon intensity of human activities. Among various methods of CO₂ utilization, conversion...
Resource Type:: Dissertation
Full Text:: = 50 sccm) ........142 Table B-1. Calculation of Injection Moles of O2, CO, CH4 and CO2

The cloud point composition and flory-huggins interaction parameters of polyethylene glycol and sodium lignin sulfonate in water-ethanol mixtures

Creator:: Luh, Song-ping
Abstract:: In designing a solubility based separation process for solvent recovery of an organosolv pulping process, the phase behavior of polymeric lignin molecules in alcohol - water mixed solvent should be known. In this study, sodium lignin sulfonates (NaLS) samples were fractionated into three different molecular weight fractions using a partial...
Resource Type:: Masters Thesis
Full Text:: i and j, and is based on per mole of i. 26 EXPERIMENTAL The objective of the experimental work

Performance of a packed distillation column with induction heated packing

Creator:: Hundley, Gary L.
Abstract:: An experimental packed distillation column was constructed and data were taken to evaluate the effects of heating sections of the column packing during the distillation operation. The experimental column was packed with carbon Raschig rings and the heating was accomplished using an induction coil. The carbon tetrachloride and benzene system...
Resource Type:: Masters Thesis
Full Text:: . 707 and the reboiler liquid index of refraction corresponds to a CC14 mole fraction, xw, of 0.481

Steam reforming of hydrocarbons in a microreactor : experiment and modeling

Creator:: Alkhaldi, Khaled H. A. E.
Abstract:: See pdf
Resource Type:: Dissertation
Full Text:: for various S/C ratios 66 4.8 Moles of solid carbon formed per mole fed of methane for various S/C

Solubility of aluminosilicates in kraft green and white liquors

Creator:: Wannenmacher, P. Nick
Abstract:: The increasing occurrence of aluminosilicate caused complications in krafi pulp mills can be attributed to the closing of purge points and the expanded use of contaminated feedstocks and recycled fiber sources. An active purge of aluminum and silicon from the chemical recovery cycle must be undertaken in order to maintain...
Resource Type:: Dissertation
Full Text:: (moles/kg of solvent) and x mole fraction (unitless). Since three different concentration bases are used

Physical and numerical approximations of reactive distillation dynamics

Creator:: Pavarajarn, Varong
Abstract:: Two approaches to reduce computational requirements for solving reactive distillation problems have been studied: simplification of the model using physical assumptions and numerical approximation using an orthogonal collocation technique. The results of a full-order model with time dependent stage molar holdups was compared to published steady-state experimental data and was...
Resource Type:: Masters Thesis
Full Text:: Physical and numerical approximations of reactive distillation

The simulated and measured performance of rotary dryers used to dry wood waste fuels using boiler exhaust gases

Creator:: Kirk, Raymond W.
Abstract:: This study evaluates the feasibility of retrofitting a rotary dryer to a hog fuel boiler, using the boiler exhaust gases as the drying medium. Two simulation models were developed. As substantiated by experimental measurement of existing boiler/dryer systems, each model accurately predicts system performance given site-specific parameters such as boiler...
Resource Type:: Masters Thesis
Full Text:: The simulated and measured performance of rotary dryers

Preliminary study on the effect of pH on the treatment of lead contaminated wastewaters with ozone

Creator:: Adolf, Ronald L.
Abstract:: Ozone was found to quickly reduce the concentration of lead in a prepared solution when the solution pH of said solution was greater than 7.0. When a solution having a pH of greater than 7.0 was filtered the concentration of lead was less than approximately 1.0 ppm. 1.0 ppm is...
Resource Type:: Masters Thesis
Full Text:: oxidation appears to follow first order, reversible reaction kinetics. Mass transfer and pH seem to be the

The pressure and temperature effects on the solubility of nitrogen in distilled water

Creator:: Spink, Thomas Joseph
Resource Type:: Masters Thesis
Full Text:: mole fractions, XN and Bunsen coefficients, 2 a . A comparison of concentrations obtained by turbulent

Search Constraints

Search Results

Limit your search