Optical basicity

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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 … 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 fluorinated and oxidic compounds, the optical basicity can be estimated based on Duffy's empirical formula ( Sontakke and Annapurna, 2012; Zheng et al., 2014; Guo et al., 2024 ),

Oxide ion/electronic polarizability, optical basicity and linear ...

WebThis study explored a technical approach that can reduce the basicity of lignin-based biochar by utilizing FeCl 3 during production of ... USA). The concentration of As(V) was analyzed using an inductively coupled plasma/optical emission spectrometry (ICP/OES, Optima 5300 DV, PerkinElmer, USA). The reusability test was conducted in five ... 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 ... how does using the equity in your home work

Electronic polarizability, optical basicity, and interaction parameter …

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. WebNov 28, 2024 · The experimental results show that LS significantly increases with the increase of temperature, basicity, and Na2O content, whereas it decreases with 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… photographers in clearwater florida

Exploring in situ Ni(II) complexation of pyrrole ... - ScienceDirect

Optical Basicity - Encyclopedia of Glass Science, Technology, …

WebAug 9, 2024 · The Figure S1b presents the optical basicity behavior for SixMg, SixCa, SixNNa, and SixNLiNa glasses in a higher magnification. The optical basicity is found for all silicate glasses to increase approximately linearly with total modifier content, while pyrophosphate glasses appear to partially deviate from this trend. 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. how does using biomass affect the environmentWebThe physical, optical, and gamma ray shielding capabilities of the B 2 O 3-Bi 2 O 3-MoO 3 glass system have been evaluated. The optical basicity of the current samples rises from 0.781 to 0.897 with increasing Bi 2 O 3 concentration. The values of refractive index, dielectric constant and optical dielectric constant show uptrend and lies in the range of … photographers in dereham

"WebDec 20, 2024 · Titanium-doped and titanium-free lithium borate glasses were prepared using a quenching method and high-purity-grade chemical substances. Structural analysis was carried out by Fourier transform infrared (FT-IR) spectroscopy and mechanical measurement. The states of the produced glasses were examined by x-ray diffraction, and … " - Optical basicity

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 …

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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 … 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 …

WebAug 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 … 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 …

WebMar 13, 2024 · A brief study on optical and mechanical properties of an organic material: Urea glutaric acid (2/1)-a third order nonlinear optical single crystal. Crystals 2024, 11, 1239. [Google Scholar] Dimitrov, V.; Sakka, S. Electronic oxide polarizability and optical basicity of simple oxides. J. Appl. Phys. 1996, 79, 1736–1740. WebJul 17, 2024 · The optical basicity of present glasses are also estimated. Moreover, we studied many desirable features such as density, molar volume, oxygen packing density and the average phosphorus–phosphorus distance.

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 …

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. photographers in danbury ctWebThe gamma and A values allow the basicity of a glass composed of these oxides to be expressed numerically on the optical basicity scale. Data that are available for phosphate glasses include all the rare earth ions (except Pm3+) and indicate a very irregular trend in gamma, but with an overall increase from La3+ to Lu3+ (which has gamma=1.03 ... photographers in dillsburg paWebJan 1, 2024 · The optical basicity of prepared glasses decreased with the increasing concentration of lanthanum oxide. Metallization criterion on the basis of refractive index … how does using inhalants affect our brainWebThe 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 ... how does using findmax improve the codeWebFeb 13, 2024 · However, whilst optical basicity can provide useful empirical correlations (e.g. sulphide capacity of ladle slags ), these values have not been successfully linked to … photographers in daytona beachWebJan 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. photographers in duck ncWebThe 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 … how does using less water help the planet