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Sensitivity Analysis Of Stormwater Runoff Using The "Bmp" And "Nonpt" Computer Programs, George D. Flatt
Sensitivity Analysis Of Stormwater Runoff Using The "Bmp" And "Nonpt" Computer Programs, George D. Flatt
Retrospective Theses and Dissertations
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Synthesis And Flame Retardant Studies Of Bromoester Of 2,4-Pentadienoic Acid, Hessam Ghane
Synthesis And Flame Retardant Studies Of Bromoester Of 2,4-Pentadienoic Acid, Hessam Ghane
Retrospective Theses and Dissertations
The synthesis and fire retardancy of several bromoesters of 2,4-pentadienoic acid were investigated. The synthesis of 2,4-pentadienoic acid was accomplished by liquid phase reaction of acrolein and malonic acid in the presence of pyridine. The conversion of the acid to bromoesters was performed by two different procedures. In the first procedure, the corresponding acid chloride was prepared from the acid via reaction with SOCl2 in the presence of powdered (3A°) molecular sieves. The molecular sieves serve as an internal trap for by-product HC1 and inhibit the competing polymerization reaction of the acid chloride. Reaction of the acid chloride with various …
The Vapor Phase Oxidation Of 1, 3-Pentadiene, David E. Sasser
The Vapor Phase Oxidation Of 1, 3-Pentadiene, David E. Sasser
Retrospective Theses and Dissertations
The vapor phase oxidation of 1.3-pentadiene, over heterogeneous catalysts, was investigated with the objective of producing 2,4-pentadienal and 2,4-pentadienoic acid. Copper and cobalt-molybdenum catalysts, both supported and unsupported, were utilized at various reaction temperatures, residence times and feed ratios. The matter of 1,3-pentadiene vaporization and introduction into the reactor system proved to be critical. Low temperature vaporization of the hydrocarbon and dilution with the oxidant, air, was found to be necessary to avoid polymerization of the feed. Alumina-supported catalysts were found to be very active, leading to severe cracking of the hydrocarbon feed and subsequent carbonization of the catalysts. Silica-supported …