sieving could also be attributed to its narrow PSD, which is discussed in the preceding section. Interestingly, we observed that the separation factor for CO2/N2and CO2/CH4is higher than the ideal selectivity. Furthermore, our mixed-gas measurements showed that the N2and CH4permeabilities were lo...
We tabulate the thermodynamic factor for each Hugoniot point in Table 2. As expected, this factor is larger than one, due to an ambipolar effect, depending on the symmetry of the mixture. Through fitting the QMD results using the functional formula of Eqs (7), (9) and (11), the self-...
With an increase of Zr content a broad peak was observed in X-ray diffraction spectra suggesting the presence of nanocrystalline (nc) ZrC phase for the coatings with Zr content higher than 4at.%. The application of Scherrer formula yielded a grain sizes with a dimension of 1.0鈥 2.2nm. ...
*/4.3.1. X-ray crystal structure analysis of 4Formula C20H32Cl2N2Ti, M?/419.28, red-orangecrystal 0.35 mm?/0.30 mm?/0.05 mm, a?/7.063(1) A˚,b?/24.283(1) A˚, c?/12.265(1) A˚, b?/98.55(1)8, V?/2080.2(4) A˚3, rcalc?/1.339 g cm?3, m?/6.74 cm?1,...
For all the three differently charged of Zr n Al clusters, the lowest-energy geometry is in favor of three-dimensional structure when n ≥ 3. The Zr 3 Al + , Zr 4 Al – , Zr 5 Al + , Zr 6 Al – and Zr 7 Alclusters are more stable than their corresponding differently charged ...
“semi-quantitative and quantitative” methods were adopted in the quantitative of lignin structure, which depended on the method without internal standard (IS) and with aromatic units as IS, respectively [74,75,76,77]. In a semi-quantitative method, the calculation formula of relative abundance ...
Keywords: NiAl2O4; CuAl2O4; ZnAl2O4; sol-gel auto combustion; diethanolamine (DEA); photoluminescence (PL) 1 Introduction Metal aluminate spinels with the formula MAl2O4, where M represents a divalent metal ion, have attracted great attention for various applications owning to their high ...
The molecular formula of compound 2 was suggested as C22H26N2O3Cl by the quasi- molecular ion at m/z 401.1625 [M]+ (calcd for 401.1626). In the 13C and 1H NMR spectra of compound 2 (Table 1), a total of two methyl groups, five methylenes, eight methines, and seven quaternary ...
For example, ILs have shown great potential to be applied in the development of novel drug formulations as excipients, based on them can be developed drug formulations with new routes of administration, or they can be involved in the preparation of dual-active drug formula- tions [8–10]. ...
Although the first inorganic oxide of divalent vanadium was synthesized more than a hundred years ago, the number of compounds containing V2+ ions in “formula” amounts is still small. The main reason for the small number of V2+ oxosalts is their high instability in the air, which significa...