Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 61 for “"Acid solution"”.
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Viscosities of stannic chloride-acetic acid solution
Thesis (M.A.)--University of Kansas, Physics, 1932.
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A method of direct manufacture of hydrochloric acid solution
Thesis: M.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1936
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The electrolytic reduction of osmium tetroxide in perchloric acid solution
… the chemistry of osmium tetroxide in perchloric acid solution. The research was originally instigated from a seminar report on the ruthenium III thiocyanate complex ion which was studied in perchloric acid solution. The seminar report given by Craig Townsend discussed how a spectrophotometric …
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Study of Copper Electrodeposition on Ruthenium Oxide Surfaces and Bimetallic Corrosion of Copper/Ruthenium in Gallic Acid Solution
… process in semiconductor fabrication. Gallic acid is used in post CMP slurry solution and is known well as antioxidant which is supposed to oxidize itself to prevent other species from oxidizing. However, in this study under the observation of Cu microdot corrosion test, copper was corroded …
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Acid resistance of sewer pipe concrete
A hydrochloric acid solution laboratory test was developed to assess the resistance of concrete used in the manufacture of pipes to sulphuric acid environments encountered in sewers. A hydrochloric acid solution (pH of 1,00) simulates the attack on concrete sewer pipes at the average daily sewage …
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The effect of certain nitrogen-containing organic compounds on the corrosion of steel in phosphoric acid
… the corrosion of steel in 5 percent phosphoric acid at 25°C. and under the conditions of aeration and agitation used. 3. Sodium chromate is an inhibitor in concentrations of 1 percent for the corrosion of steel by a 5 percent, aerated, agitated, phosphoric acid solution at 25°C. 4. The mechanism …
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Kinetics of β-haematin formation in benzoic acid
… formation were investigated in 0.05 M benzoic acid acid solution using a newly developed pyridine-based assay.
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Pickling of steel
… black stovepipes steel in 18.3 percent sulfuric acid solution where the rate of attack on the bare metal at 75°F is 0.097 milligrams per square inch per minute, while at 142°F the rate of attack is 0.51 milligrams per square inch per minute. 2. The time required to remove the surface oxide from …
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The recovery of gallium from a Virginia feldspar ore
… by “leaching” the ore with sodium hydroxide 3. Acidification of the sodium hydroxide solution with hydrochloric acid and subsequent extraction of the acid solution with ether to separate the gallium from aluminum, vanadium, and titatium, and other metals 4. Removal of iron by precipitation of …
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Modeling, Simulation, and Optimization of an Electroorganic Process Flowsheet
… to methyl ethyl ketone in an aqueous sulfuric acid solution. Experimental measurements were performed to calculate rate constants for an adsorption isotherm for butanol on platinum in order to elicit a kinetic expression for use in the electrochemical reactor model. The entire process flowsheet …
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The Formal Redox Potential of the Permanganatemanganous System in Sulfuric Acid
… pairs is the permanganate-manganous system in acid solution. |A search through the literature seemed to show that no attempts have been made to measure the formal redox potential of the permanganate-mangonous system in sulfuric acid. All investigations undertaken were to secure more accurate …
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Crystallisation of Barium Chromate
… as a typical one. The increase in solubility in acid solution was examined. Also the solubility of Barium chromate in the Presence of other compounds (Urea, complexing agents) was Studied. Conditions of supersaturation were created by hydrolising Urea and thus neutralising the acid homogeneously. …
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Electrostatic Atomization Of Antimicrobial Treatments On Ground Beef Processing, Instrumental Color, Sensory Color, Taste and Aroma Characteristics
… Antimicrobial treatments included: fumaric acid, malic acid, octanoic acid, decanoic acid, sodium propionate, propionic acid solution, potassium lactate/diacetate blend, sodium benzoate, hexanoic acid, pyruvic acid, levulinic acid, lactic acid/ citric acid blend, sodium diacetate, lemon …
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Late transition metal bimetallics for photocatalytic hydrogen production, M-X and C-H bond activation
… of hydrogen from homogeneous hydrohalic acid solution using a two-electron mixed valence dirhodium complex. Studies aimed at understanding and improving the photochemical quantum efficiency for challenging M-X (X = CI, Br-) bond photoactivations were undertaken by incorporating gold into …
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Advanced electrochemical characterization of copper deposition
… of copper metal in a concentrated sulfuric acid solution is reported to occur through a four-step mechanism: (I) the dehydration of Cu2+ (H2O)6, (II) the reduction of Cu2+ to cu+, (III) the dehydration cu+ (H2O)6-x, (IV) the reduction of Cu+ to copper metal. The dehydration steps have been …
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Koloidinių tirpalų sudarytų iš polimerinių ir metalinių nanodalelių tyrimai /
… polymeric and metallic nanoparticles colloidal solutions by different methods for further biomedical and bioanalytical application. In this work, enzymatic PANI nanoparticles formation were studied. Optimal conditions of synthesis, size of PANI nanoparticles and initial polymerization rate were …
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Metallic and bimetallic catalysts for electrochemical reduction of problematic aqueous anions
… -200 mV vs. Ag/AgCl in a perchloric acid solution of pH 1. The high onset potentials in these systems are greater than 0 V RHE and therefore represent the fact that these systems could function as catalysts for hydrogenation of nitrate. Of the systems studied they also have the …
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Poly(amide acid) infusion with Copper(II) Chloride to form polyimide microcomposite films
… been made by homogeneously doping a poly(amide acid) solution with a metal complex and then thermally curing to 300°C. However, much of the dopant remains in the bulk of the films. Depending on the nature of the metal salt or complex, it has been postulated that lower polymer decomposition …
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Effects of heat and acid stress on bacterial populations of beef, and on susceptible and multi-antimicrobial resistant Salmonella isolated from beef
… cm2 reduction) of steam-vacuuming and lactic acid solution rinsing when applied during beef carcass fabrication. Study results also supported concerns regarding increased antimicrobial resistance among foodborne bacterial populations, as data indicated that 10.7% of beef animal hide samples …
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A study of the oxygen electrochemistry of ruthenium and iridium
… behaviour of ruthenium and iridium in aqueous solution and particularly of oxygen evolution on these metals. The latter process is of major interest in the large-scale production of hydrogen gas by the electrolysis of water. The presence of low levels of ruthenium trichloride ca. 10-4 mol dm-3 …
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