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Theses/Dissertations

Chemical engineering

Retrospective Theses and Dissertations

Oil, Gas, and Energy

Articles 1 - 14 of 14

Full-Text Articles in Engineering

Combinatorial Synthesis And Screening Of Fuel Cell Catalysts , Shrisudersan Jayaraman Jan 2004

Combinatorial Synthesis And Screening Of Fuel Cell Catalysts , Shrisudersan Jayaraman

Retrospective Theses and Dissertations

Polymer electrolyte membrane fuel cells (PEMFCs) are compact power sources that can operate with high efficiencies and low emission of environmentally harmful gases. One of the major barriers impeding the development of PEMFCs as a competitive energy source is the inability of existing anode catalysts to oxidize fuels other than hydrogen at sufficient levels due to catalyst deactivation by carbon monoxide (CO) and other partial oxidation products. The focus of this research is the development and application of combinatorial strategies to construct and interrogate electrooxidation (anode) catalysts pertaining to PEMFCs to discover catalysts with enhanced performance in catalyst deactivating environments ...


Development And Scale-Up Of Particle Agglomeration Processes For Coal Beneficiation , Meiyu Shen Jan 1999

Development And Scale-Up Of Particle Agglomeration Processes For Coal Beneficiation , Meiyu Shen

Retrospective Theses and Dissertations

The development of two modified agglomeration processes for coal beneficiation is presented separately in Parts I and II of this dissertation. Part I is based on research which was conducted to study the mechanism and characteristics of a gas-promoted oil agglomeration process. Part II is based on research which was carried out to develop a newer and more innovative method for agglomerating coal particles with microscopic gas bubbles in aqueous suspensions;In Part I, the development of a gas-promoted oil agglomeration process for cleaning coal was carried out with scale model mixing systems in which aqueous suspensions of ultrafine coal ...


The Kinetics Of The Reverse Deacon Reaction , Arun K. Nanda Jan 1981

The Kinetics Of The Reverse Deacon Reaction , Arun K. Nanda

Retrospective Theses and Dissertations

The reverse Deacon reaction, Cl(,2) + H(,2)O (--->) 2HCl + 1/2 O(,2) is considered one of the most important steps in thermochemical water-splitting processes, for production of hydrogen from water. The purpose of the research undertaken was to investigate the kinetics of the chlorination of water vapor at high temperatures. An eleven-pass glass reactor 4 mm ID and 511 mm long was used. Stimulus-response experiments showed the reactor could be analyzed by plug flow procedures. The rate expression for the reverse Deacon reaction was developed from the experimental data at 879(DEGREES)K. Varying the partial pressures of ...


Moisture Flow Optimization In Porous Media For Land Leaching And For Seedbed Design , Stephen Bruce Affleck Jan 1980

Moisture Flow Optimization In Porous Media For Land Leaching And For Seedbed Design , Stephen Bruce Affleck

Retrospective Theses and Dissertations

Two problems on optimization of fresh water management in porous media soil systems were investigated. The first problem dealt with the use of surface barriers on tile-drained land during leaching operations. The barriers were designed to prevent direct flow to underlying tile drains and make leaching more efficient. The 0.1 m diameter tile drains were imbedded in an impermeable layer 2 m below the ground surface and drain spacings of 4, 8 and 16 m were investigated. Calculations were made for surface barriers that covered 25, 50 and 75 percent of the land for each case of tile spacing ...


Desulfurization Of Coal By Oxidation In Alkaline Solution , Kang-Chun Chuang Jan 1979

Desulfurization Of Coal By Oxidation In Alkaline Solution , Kang-Chun Chuang

Retrospective Theses and Dissertations

No abstract provided.


Devolatilization And Desulfurization Of Iowa Coal , Edmund Tao Kang Huang Jan 1977

Devolatilization And Desulfurization Of Iowa Coal , Edmund Tao Kang Huang

Retrospective Theses and Dissertations

No abstract provided.


Bed And Contact Resistances In An Electrically Conducting Fluidized Bed , Tan-Ping Chen Jan 1975

Bed And Contact Resistances In An Electrically Conducting Fluidized Bed , Tan-Ping Chen

Retrospective Theses and Dissertations

No abstract provided.


Simulation And Control Synthesis For A Pulse Column Separation System For Plutonium-Uranium Recovery , Edward Barrett Mccutcheon Jan 1975

Simulation And Control Synthesis For A Pulse Column Separation System For Plutonium-Uranium Recovery , Edward Barrett Mccutcheon

Retrospective Theses and Dissertations

No abstract provided.


Continuous Steam Gasification Of Coal Char In An Electrofluid Reactor , Justin Leo Beeson Jan 1973

Continuous Steam Gasification Of Coal Char In An Electrofluid Reactor , Justin Leo Beeson

Retrospective Theses and Dissertations

No abstract provided.


A Theoretical Investigation Of Heat Transfer To Fluids In Laminar Flow In Tubes , Kermit Layton Holman Jan 1964

A Theoretical Investigation Of Heat Transfer To Fluids In Laminar Flow In Tubes , Kermit Layton Holman

Retrospective Theses and Dissertations

No abstract provided.


Shim Control Of Heavy-Water Moderated Power Reactors By Removal Of Light-Water Poison , Charles White Sayles Jan 1964

Shim Control Of Heavy-Water Moderated Power Reactors By Removal Of Light-Water Poison , Charles White Sayles

Retrospective Theses and Dissertations

No abstract provided.


Peak Heat Flux In Nucleate Boiling Heat Transfer , Bernard Patrick Breen Jan 1964

Peak Heat Flux In Nucleate Boiling Heat Transfer , Bernard Patrick Breen

Retrospective Theses and Dissertations

No abstract provided.


Pyrometallurgical Decontamination Of A Magnesium-Thorium Alloy , James Stephen Klepfer Jan 1964

Pyrometallurgical Decontamination Of A Magnesium-Thorium Alloy , James Stephen Klepfer

Retrospective Theses and Dissertations

No abstract provided.


The Dynamic Response Of Flow Forced Heat Exchangers , Franklin Joe Stermole Jan 1963

The Dynamic Response Of Flow Forced Heat Exchangers , Franklin Joe Stermole

Retrospective Theses and Dissertations

No abstract provided.