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Optical basicity

WebFeb 1, 2024 · The concept of optical basicity (Λ) is particularly suited to binary oxides and oxidic network materials such as silicates to characterize the acid–base nature of glasses … WebFeb 25, 2002 · The electronic polarizability and optical basicity of La 2 O 3 and related glasses have been determined from ultraviolet absorption spectra and calculations based …

Electronic polarizability and optical basicity of lanthanide oxides

WebMay 19, 2004 · The optical basicity treatment of oxidic network systems, for example silicates, has been successful in correlating a range of properties; since the method has the advantage of avoiding such problems as those associated with “single ion” activities, it allows comparisons between many different systems. However, several of the properties … WebMay 26, 2015 · A new sulfide capacity model for CaO-Al 2 O 3 -SiO 2 -MgO slags has been developed based on corrected optical basicity. The present model has taken charge compensation into consideration and postulated that Al exits in the form of [1/2Ca (AlO 4 )] 4– when NCaO is higher than NAl2O3 in slag. bishop asia dosreis-whitehead https://marinercontainer.com

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WebApr 11, 2024 · Optical sensors with distinct colorimetric output upon binding with fluoride offer a convenient, fast and reliable methodology for its on-site detection. ... The basicity of these anions in DMSO medium results in deprotonation of the acidic N-H moieties of R leading to the appearance of the new charge-transfer peak at 450nm. In addition, the ... For oxides, MO (M = Mg, Ca, Sr, Ba), the basicity moderating parameter of M gover… Arguments are presented justifying the use of fluoride optical basicity values (e.g… The optical basicity trend in alkali borate glasses has been studied in detail [2,13-… The basicity of the oxidic groups AlO 4 5−, SiO 4 4−, PO 4 3−, SO 4 2−, ClO 4 −, ca… The basicity of an oxide glass can be measured experimentally from the frequenc… WebJun 25, 2024 · Basicity, polarizability, electronegativity and some physical constants are determined depending on experimental results. Also, the refractive index and optical band gap are calculated depending on the theoretical optical basicity and molar refractivity. bishop - a skyrim romance mod

Basicity, Electronegativity, Optical Parameters and …

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Optical basicity

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WebOptical basicity Λth being a characteristic of bulk oxide, a scale of surface optical basicity, Λsurf is proposed by plotting the XPS O1s binding energy against Λth, which results in a … WebThe optical basicity of complex nitrides can therefore be calculated by the same method established for oxides using the equivalent fractions and the basicity of the constituent …

Optical basicity

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WebSep 1, 1986 · The optical basicity trend in alkali borate glasses has been studied in detail [2,13-16], and probe ion spectroscopy has revealed the existence of sites with basicities significantly above the average at compositions of approximately 30% Na20 and above. WebThe optical basicity of the manufactured glass samples is increased from 0.577 to 0.862, which is a significant improvement. As the quantity of oxygen atoms in the produced glass samples diminishes, the oxygen packing density varies between 102.978 and 78.351, depending on the sample size. The energy of the optical band gap ranges between 3.878 ...

WebTo account for selectivity as a general concept that allows the classification of reactions, it would be necessary to have available parameters accounting for a similar type of … WebOct 10, 2024 · Optical basicity is identified as the average electron donor power of a fluorinated or oxidic compound (Herrmann et al., 2015). For a glass system consisting of …

WebThe concept of optical basicity (Λ) is particularly suited to binary oxides and oxidic network materials such as silicates to characterize the acid–base nature of glasses and melts and to account for the complexation of metal cations by a variety of anionic frameworks. WebThe concept of optical basicities initially developed by Duffy for solid oxides was successfully transferred to low melting salts such as ionic liquids (ILs). Several ionic …

WebApr 28, 2024 · The optical basicity follows the same trend as the electronic polarizability, which can be attributed to the more acidic nature of P 2 O 3 compared with TiO 2. Moreover, the decrease of the optical basicity with increasing TiO 2 content supports the low ability of TiO 2 compared with P 2 O 5 to transfer electrons to the surrounding cations.

bishop aslWebJun 25, 2024 · The optical basicity of the glass has been estimated and it has the values from 1.11 to 1.31 with varying vanadium content from zero to 5 mol%. Static dielectric … dark furniture living room paint colorWebThe optical basicity Λ has been evaluated depends on the optical band gap and the refractive indexdata for two different ternary glass systems. Also the uncertainty of Λ in the two cases was estimated, hence we can predict … bishop assassin\\u0027s creedWebThe study of polarizability, optical basicity, and electric susceptibility carried out on the new and very rare set of bismuth - tellurite glasses doped with Ho 3+ ions were fabricated by the conventional melt quenching process. The non-crystalline nature was confirmed by X-ray diffractometer measurements. Physical properties such as rare earth ... dark furniture painted whiteWebAug 13, 2002 · The acid−base properties of germanate glasses cannot presently be compared quantitatively with those of silicate, borate, and several other glasses because the optical basicity of the parent oxide, Λ(GeO2), has not yet been unequivocally established. The usual method of measuring optical basicity, relying on probe ions such as Tl+ or … bishop asmrWebJan 1, 2024 · The optical basicity of prepared glasses decreased with the increasing concentration of lanthanum oxide. Metallization criterion on the basis of refractive index showed an increasing trend while energy band gap based metallization criterion showed a decreasing trend. bishop asserWebApr 15, 2007 · This relationship presents a general trend toward an increase in the oxide ion polarizability with increase in optical basicity. The Λ values estimated from α O 2-using Eq. (6) are given in Table 1 (columns 9–10). Large α O 2-(n) values over 2 Å 3 and large Λ values over 1.0 are obtained. That is, the rare earth oxides showing electronic polarizability … dark fury andy rodriguez