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Single- and multi-functional arrayed microchannel fluidic devices /Fisher, Luke W. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2011. / Printout. Includes bibliographical references (leaves 106-107). Also available on the World Wide Web.
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Synthesis, characterization and deposition of dendrimers using a continuous flow microreactor /Liu, Shuhong. January 2007 (has links)
Thesis (Ph. D.)--Oregon State University, 2008. / Printout. Includes bibliographical references (leaves 145-146). Also available on the World Wide Web.
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Oxidative desulfurization of dibenzothiophene with tert-butyl hydro peroxide in a photochemical micro-reactor /Hebert, Eilleen M. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2008. / Printout. Includes bibliographical references (leaves 79-83). Also available on the World Wide Web.
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Magnetic nanoparticulate catalysts in flow processesSmugowski, Hubert Jakub January 2011 (has links)
No description available.
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Hydrodynamically modulated voltammetry in microreactorsMeng, Luwen January 2019 (has links)
This thesis describes modulated methods using both voltammetric and microfluidic perturbations to study mechanisms of electrolysis reactions. The initial chapters provide an overview of applications and research development in the fields of micro-engineering and electrochemistry, including microfabrication methodology, electrochemical detection techniques and analysis methods. Some typical electrochemical reactions have been studied for different kinds of industrial applications. Also hydrodynamic modulation methods have been investigated. The result chapters begin in Chapter 3 with detailed investigation of various electrochemical reactions by using cyclic voltammetry (CV) and large amplitude Fourier transformed alternating current voltammetry (FTACV) under microfluidic conditions. Single electron transfer reactions with different kinetics were studied first by using potassium ferrocyanide and ferrocenecarboxylic acid (FCA). Dual electron transfer reactions with different pathways were investigated by using 2,5-dihydroxybenzoic acid for one step oxidation and N,N,N',N'-tetramethyl-para-phenylene-diamine (TMPD) for two consecutive one-electron step oxidation. An irreversible reaction was explored by using borohydride solution. Examples of homogeneous reaction mechanisms were studied by using the combinations of Fe(CN)64-/L-cysteine or TMPD/ascorbic acid. The current response of all the electrolysis reactions except single electron transfer reactions was first reported under microfluidic conditions with FTACV, which has shown sensitive with the change of volume flow rates and the substrate concentrations when homogeneous reactions are involved. The linear relationships between peak current and volume flow rates or substrate concentrations can be obtained in every harmonic component. In chapter 4, the modulated technique was applied to microfluidic hydrodynamic systems. A range of electrolysis mechanisms including single electron transfer reactions, dual electron transfer reactions, irreversible reaction and homogeneous reactions were studied under hydrodynamic modulated conditions. The system showed rapid response with the change of volume flow rates during one measurement. The linear relationships between peak current and flow rates, as well as substrate concentrations, can be obtained simultaneously in one scan, which reveals a promising approach to get more information in a short-time measurement. Chapter 5 demonstrated a new protocol by forcing an oscillation of the electrochemical active solution flowing. Analysis of transition time and its effect on limiting current are presented to begin exploration of this new tool for supporting researchers on understanding redox mechanisms. A short simulated study was carried out to help better understand the mechanism under different hydrodynamic conditions.
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Intermetallic microlamination for high-temperature microreactorsDewey, Tyler 05 September 2001 (has links)
Chemical microreactors offer opportunities for portable power generation, on-site
waste remediation and point-of-use chemical synthesis. Much of the existing
development of microreactor devices involves silicon-based microfabrication techniques.
It is recognized that new refractory materials are important to realizing high-temperature
microreactors. Requirements of these materials include high-temperature resistance,
chemical inertness and low-cost microfabrication. Advances in multilayer ceramics hold
promise for the fabrication of microreactor structures from ceramic tape. Problems
include creep, moderate levels of densification, and volumetric shrinkage, all of which
can lead to dimensional instability.
Intermetallics are another class of refractory materials which may hold some
promise for high-temperature microreactor development. In this paper, a new method of
forming microchannel arrays from thin layers of intermetallics is demonstrated. This
method has the advantage of eliminating volumetric shrinkage due to binder removal.
Various iterations of NiAl intermetallic conversion and bonding are presented. Results show that the NiAl system may be suitable as a substrate for microchannel reactor
designs. / Graduation date: 2002
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Flow characterization of multiple-tube reactors for synthesis of nano-sized silicon nitride powder via silicon monoxide ammonolysis /Vas-Umnuay, Paravee. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2009. / Printout. Includes bibliographical references (leaves 79-81). Also available on the World Wide Web.
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The effect of feedstock composition on defect evolution in powder injection molded ceramic microarrays using simulations and experiments /Laddha, Sachin. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2009. / Printout. Includes bibliographical references (leaves 104-110). Also available on the World Wide Web.
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Microchannel steam-methane reforming under constant and variable surface temperature distributions /Eilers, Benn J. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2010. / Printout. Includes bibliographical references (leaves 97-101). Also available on the World Wide Web.
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Numerical simulation of micro/mini-channel based methane-steam reformer /Peterson, Daniel Alan. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2010. / Printout. Includes bibliographical references (leaves 107-110). Also available on the World Wide Web.
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