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Showing 1 to 20 of 156 for “"sodium hydroxide"”.
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Reduction of substituted nitrobenzenes with zinc and methanolic sodium hydroxide: a thesis
… nitrobenzenes using zinc and mehanolic sodium hydroxide."
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A Study of the Polyacrylic Acid - Sodium Hydroxide System Using Thin-Film Dialysis
… in the literature of studies of the binding of sodium ion to polyacrylic acid. The first unambiguous demonstration of this phenomenon may be found in the work of Wall, et. al. (1) In attempting to determine the transport number of polyacrylate ions, Wall found a significant fraction of the …
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Cellulose fiber dissolution in sodium hydroxide solution at low temperature: dissolution kinetics and solubility improvement
Sodium hydroxide can cause cellulose to swell and can even dissolve cellulose in a narrow range of the phase diagram. It was found that for cellulose with low to moderate degree of polymerization, the maximal solubility occurs with 8~10% soda solution. In recent years, researchers found that sodium …
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Comparison of lime and sodium hydroxide for the control of gas production from sewage sludges
The effects of lime and sodium hydroxide on gas production from stored sewage sludge were examined. The impact of calcium on gas production was also investigated. The rate and volume of gas production and change in pH over time were monitored in all the reactors in an effort to study the …
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A Mechanistic Study of the Reactions of 4-Nitrobenzyl Halides With Sodium Hydroxide in Aqueous Ethanol
The reaction of 4-nitrobenzy1 chloride and sodium hydroxide in ethanol, has been observed to give 4,4' - dinitrostilbene, while 4-nitrobenzy1 bromide under similar conditions, gave 4-nitrobenzy1 ethyl ether . The purpose of this study was to determine mechanisms for these two reactions, …
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Acoustical characteristic of empty fruit bunch (EFB) fibre with influence of sodium hydroxide treatment time and decay lifespan
… process known as alkali treatment using sodium hydroxide (NaOH). Five parameters were chosen for the alkali treatment process which is the fiber immersion time (at 1 hour until 5 hours) with fixed alkali treatment concentration of 6% NaOH. Cross sectional area of the fibre was measured …
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Composition and digestibility of untreated and sodium hydroxide treated fecal waste from cattle fed high or low roughage rations
A preliminary in vitro digestion study was conducted to investigate the effect of roughage level in the diet of steers producing fecal waste, drying method and NaOH treatment, on in vitro dry matter digestibility of cattle fecal waste. All three factors significantly (P<.01) affected in vitro dry …
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The electrochemical hydrogenolysis of glucose
… or zinc cathodes in the presence of 10 per cent sodium hydroxide at a temperature of 100-110 ℉, and a current density of 7.0 amperes per square decimeter. The range of current density investigated was from 4.0 to 7.0 amperes per square decimeter. The temperature was 100-110 ℉; the cathode …
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Coal desulfurization with sodium hypochlorite
… coal and Illinois No. 6 coal were conducted with sodium hypochlorite in the laboratory. Pittsburgh No. 8 coal was leached by hypochlorite at high pHs in one step only. The hypochlorite concentration varied from 0.2 to 0.6 molar; sodium hydroxide concentration, from 0.2 to 0.8 molar; and …
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Removal of calcium sulfate deposits from waste acid treatment facilities
… deposited material and in the development of a sodium hydroxide-alcohol-water solution for the removal of the calcium sulfate deposits. The initial phases of the development of the sodium hydroxide-alcohol-water solution were discouraging in that the results were inconsistent and could not be …
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Syntheses of tetrasubstituted azo- and azoxybenzenes
… and diethoxynitrobenzenes with (a) ethanolic sodium hydroxide and zinc dust, (b) methanolic sodium hydroxide and zinc dust, (c) ethnolic potassium hydroxide, and (d) lithium aluminim hybride. A second aim was the synthesis of new dihalodialkosy-, dimethoxydimethyl-, and tetra-alkoxy-azo- and …
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The recovery of gallium from a Virginia feldspar ore
… Extraction of gallium 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 …
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Electrolytic production of hydrogen peroxide
… lead and activated carbon electrodes in 5 N sodium hydroxide, 0.1018 N sodium hydroxide, and 0.01018 N potassium hydroxide, saturated ammonium chloride and 0.043 N phosphoric acid were studied.
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Rate of xanthation of soda-cellulose: an investigation of the rate of xanthation of the soluble cellulose xanthate
… of the soluble cellulose xanthate, using a sodium hydroxide solution as a solvent. By this study it was hoped that further information could be obtained concerning the reaction which occurs when soda-cellulose is treated with carbon disulfide. It is concluded from the results of this …
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Electrochemical NOx reduction using a carbon nanospiked catalyst
… with three different electrolytes, Lithium hydroxide, Sodium hydroxide, and Potassium hydroxide has been compared. Identification and quantification tests for nitrate, nitrite, and ammonia indicated that nitrite is an intermediate product during nitrate reduction. The final product with …
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Investigation of a hydrogen production process through aluminum and water chemical reaction
… the oxide layer, this thesis study utilized sodium hydroxide as the reaction promoter. The various experimental conditions implemented during the testing process included changes in water temperature and system performance. The criteria used to evaluate system performance were the conversion …
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