2. What is the meaning of VSEPR?The corresponding concept is a good tool for ... and was established by...?Valence Shell Electron Pair Repulsion Concept Predicting the shape/structure of moleculesIt was established by Gillespie and Nyholm in the year 1957....
In Sb2O3 and Sb/V/Ce/Ti catalysts, the intensity and shape of these peaks are related with the oxidation state of the absorbing Sb atoms. It seems that the peak intensity and width of the peak A in fresh and SO2 treated Sb/V/Ce/Ti samples represent the presence of Sb in Sb(III)...
almost remains constant (86 ± 4 kJ mol−1), evidencing that the active sites of Mo1/Fe2O3are uniform. Owing to the acid-redox properties and the similar structure as the dinuclear active site of V2O5-based catalysts2,26, and the same catalytic behavior as the dinuclear Cu si...
Shape-Selective Catalysis in Industrial Applications, (Chemical industries; Vol. 36) Marcel Dekker Inc., New York 1989, ISBN 0-8247-7856-1 and Hoelderich et al. Angew. Chem. Int. Ed. Engl. 27 226-246 (1988), especially pp.226-229. The large pore size zeolites may also be ...
(such as CuO and Co3O4) with controllable particle size, shape and composition simply through changing the calcination atmospheres [33]. By thermolysis of differently shaped MOFs, a series of CuO/Cu2O composites with cube, octahedron and rod-like morphologies were obtained by Lu group [35]. ...
[80]. The approach of the Lewis base prompted large-scale geometry distortion in TF4, changing its shape from tetrahedral to trigonal bipyramidal. This transformation led to the formation of two types of dimers with σ-hole and π-hole characteristics. While the latter were more stable with ...
The shape of the ammonia desorption profiles recorded for monometallic samples based on mesoporous spherical silica of MCM-41 type is very similar to those reported in scientific literature [12,37,38]. Our previous studies [11] showed that deposition of copper and manganese to cylindrical MCM-41...
Shape dependence and sulfate promotion of CeO2 for selective catalytic reduction of NOx with NH3. Appl. Catal. B 2018, 232, 246–259. [Google Scholar] [CrossRef] Liu, C.; Shi, J.W.; Gao, C.; Niu, C. Manganese oxide-based catalysts for low-temperature selective catalytic reduction ...
Lewis acid–base interactions. In particular, the NH3absorption capacity of MgCl2/Res/EG (0.1:1:2) was 289 mg g−1at 293 K and 100 kPa. In addition, the introduction of hydroxyl, amide, and carboxyl groups into the structure of HBDs in DESs was an effective method to obtain NH3...
Considering the sterical effect of the decavanadate anion and the influence of size, shape, and nature of counter-cations, a substantial part of decavanadates include water molecules as a stabilising element of the crystal structure. Formation of different crystallohydrates depends on reaction ...