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Showing 1 to 20 of 110 for “"Basicity"”.
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The lewis basicity of the group VI transition metals
Digitized by Kansas Correctional Industries
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The lewis basicity of the group VI transition metals
Digitized by Kansas Correctional Industries
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Medium-Sized Ring Compounds and Spatial Control of Basicity
Made available in DSpace on 2014-12-09T17:35:03Z (GMT). No. of bitstreams: 1 6503580.pdf: 5272515 bytes, checksum: f05bdc903e53bc540c7b58f6f1471098 (MD5) Previous issue date: 1964
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Determining Optical Basicity of Molten Chloride Salts for Solar Thermal Applications
… makes pH measurements irrelevant. Alternative basicity metrics, such as optical basicity (OB), are needed to predict corrosion. OB allows for measurement of the Lewis basicity, or the extent of electron donation from ligands in the molten salt, via the nephelauxetic effect of an added probe …
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Influence of basicity in Fischer-Tropsch synthesis over supported iron-based catalysts
The Fischer-Tropsch synthesis catalyzed by iron is a well-established process for the production of synthetic fuels, waxes and high-value chemicals, such as α-olefins. A draw-back of the currently used iron-based catalysts is their short lifetime, caused by sintering and particle break-up. These …
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Thermochemical differences in lysine and lysine-homolog containing oligopeptides: Determination of basicity and gas-phase structure through mass spectrometry, infrared spectroscopy, and computational chemistry
… changes in sequence and sidechain affect the basicity, ion stability, and conformation of a peptide. The peptides characterized were acetylated polyalanine di-, tri-, and tetra- peptides containing a proton-accepting probe: lysine and or the non-proteinogenic lysine-homologs: ornithine, …
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Interaction of Acid/Base Probe Molecules with Specific Features on Well-Defined Metal Oxide Single-Crystal Surfaces
… molecule, was used to characterize the Lewis basicity of the oxygen anions on SnO₂ (110), Cu₂O (111) , and Cr₂O₃ (101̲2) surfaces. BF₃, while not a standard probe molecule, has been tested as a probe of the Lewis basicity of the oxygen anions on SnO₂ (110) and Cr₂O₃ (101̲2). By studying probe …
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Partial Pressure of Hydrogen Chloride Above its Solutions in Non-aqueous Solvents. II Nitrobenzene Solutions
… like hydrogen chloride provides a measure of the basicity of the solvent. The importance of basicity in determining the strength of acids in solution has long been discussed by such investigator s as Latimer, Rode bush, Conant, Hall, and others. Rodebush and Ewart indicate that the dielectric …
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Performance of geopolymer concrete subjected to mineral acid corrosion and related to microbially-induced corrosion (MIC) of concrete in sewers
… utilised in this study was to calculate the “basicity value” which provides the ratio of major basic to acidic oxides found in the concrete. XRF analysis of the hardened cement pastes and the 5 aggregate types used in the experiments enabled the calculation of basicity values. The combined …
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The effect of various slag constituents on the distribution of phosphorus between slag and metal
… magnesium oxide were investigated. For similar basicity ratios barium oxide was found to be a better dephosphorizing agent than any of the other constituents tested. Calcium fluoride's effectiveness as a dephosphorizer was found to be only slight under equilibrium conditions. Magnesium oxide was …
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Aspects of the chemistry of titanium dioxide in fused salt solvents
… been obtained from measurements of the optical basicity of M2O + B2O3 (M = Li, Na, K, Rb, Cs) glasses, using Pb(II) as probe ion. The results of these measurements have confirmed that the nature of the alkali metal cation significantly affects the basicity of fused alkali borate solvents. …
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Corrosion study of iron using piperazine derivatives as inhibitors
… attention as an inhibitor because of the high basicity and lack of strain on the bonds in the ring. Piperazine, a cyclic six membered ring CHNH, has not been studied as a corrosion inhibitor. This poor base and some of its simple derivatives were chosen to study as inhibitors because of the …
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The influence of inert anode material and electrolyte composition on the electrochemical production of oxygen from molten oxides
… evolution reaction are discussed. Notably, the basicity of the molten aluminosilicate electrolyte was found to greatly influence the rate of oxygen gas evolution as evidenced by the linear dependence of the current density on optical basicity. This is crucial for the design of a full-scale …
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Effect of titanium pick-up on mould flux viscosity in continuous casting of titanium-stabilised stainless steel
… the molten flux by TiN and Ti in the steel the basicity of the mould flux of the ferritic steel increased from 0.8 to 0.9 while it increased from 0.95 to 1.2 for the mould flux of the austenitic steel. The SEM/EDS analysis of the sampled flux during casting showed only some spherical metallic …
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Aromatization of n-hexane by platinum containing molecular sieves and distribution and motion of organic guest molecules in zeolites
… influence of Pt cluster size and support acidity/basicity, microstructure and chemical composition on activity and selectivity. High selectivity to benzene over most of the zeolite samples demonstrates that support acidity/basicity and microstructure do not contribute directly to the aromatization …
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Emulsion Polymerization Using Switchable Surfactants
… nm) can be obtained. It was found that as the basicity of the surfactant decreased, the particle size generated from emulsion polymerization increased. Destabilization of these latexes did not require the addition of salts and was carried out using only non-acidic gases and heat. It was shown …
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