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The use of a pre-shaped medium is one of the ways to obtain zirconia with a high surface area and porous structure. The interaction between oxygen and zirconia is reduced in the presence of sulphate compared to its absence. The amount of sulphate present influences the crystallization and phase transition processes in zirconia. The phase transition from tetragonal to monoclinic form depends on both the size of the crystal grains and the sulphur content in zirconia. The crystallization of zirconia results in the formation of various surface sulphate species with different energies. The covalency of sulphate in crystalline zirconia is higher than that in amorphous zirconia. This increase in covalency is not determined by the nominal sulphate content; rather, it likely depends on the energy level of the plane to which sulphate is attached. Unlike sulfuric acid, the sulphation of zirconia using ammonium persulphate generates an adequate amount of both Lewis and Brönsted-type acidity. The transformation of n-butane may depend on both the Lewis and Brönsted acidity of zirconia, and it is expected that a Lewis–Brönsted synergy will occur during the reaction. Thanks to those who are experts; please help me translate the part related to catalysts
One of the ways to obtain a high specific surface area and porous zirconia in type 1 before use is… The disadvantages of sulfuric acid interacting with zirconia-based oxygen compared to the case of sulfuric acid alone. It is currently the phase of adjusting sulfate crystal content and the transition stage for zirconia. Phase transition from tetragonal to monoclinic, dependence on sulfur content, and effect on zirconia grain size. The crystallization of zirconia produces different surface sulfates depending on the type of energy source. In zirconia, covalent bonds in the crystalline form are stronger than those in amorphous zirconia. The increase in covalent bonds is not a nominal function of sulfuric acid loading, but rather it may affect the energy dependence of the aircraft to which it is attached. Compared to sulfuric acid, persulfuric acid generates an abundant amount of a Lewis basic and acidic proton-type along with zirconium sulfate. Butane conversion may depend on Lewis acidity as well as the synergistic effects of zirconia and Lewis-Brønsted acidity and protons, and is expected to be a common reaction in such systems.
Using preformed media is one of the methods to obtain high-surface-area and porous zirconia. In the presence of sulfate, the reaction between oxygen and the zirconia matrix is less intense than in the absence of sulfate. The amount of sulfate regulates crystallization and phase transitions in zirconia. The phase transition from tetragonal to monoclinic crystal depends on the microcrystal size and the sulfur content in zirconia. Zirconia crystallization produces surface sulfates with different energies. Sulfation is more pronounced in crystalline zirconia than in amorphous zirconia. The increase in combination (degree) is not a function of the sulfate loading, but may depend on the energy of the surface to which the (sulfate) is attached. Unlike the use of sulfuric acid, sulfation of zirconia using persulfuric acid AN can generate sufficient amounts of both L-type and B-type acidity. The conversion of n-butane may depend not only on the L-acid acidity of zirconia but also on its B-acid acidity. During the system’s reaction process, the synergistic effect of L-acid and B-acid is considered to be dominant. It feels messy.