SO2 durability enhancement of ball milled V/TiO2 catalyst

Poisoning Effect of SO2 on Honeycomb Cordierite-Based Mn–Ce/Al2O3Catalysts for NO Reduction with NH3 at Low Temperature

“…In comparison with the fresh Mn-Ce/Al2O3, the used Mn-Ce/Al2O3 revealed some new bands at 1025, 1142, 1422, and 3260 cm −1 . According to literature [44][45][46], the bands at 1025 and 1142 cm −1 were assigned to the ant symmetric stretching vibration of the SO4 2− group [47]. The peak at 1422 cm −1 indicated the presence of NH 4+ species, adsorbed on the Brønsted acid sites [46,48].…”

Construction of cerium-based oxide catalysts with abundant defects/vacancies and their application to catalytic elimination of air pollutants

“…However, VWTi catalysts are limited by the toxicity of V 2 O 5 , the generation of large amounts of byproduct N 2 O at high temperatures, and insufficient low-temperature activity, which cannot satisfy the NO x reduction requirements of some non-electric industries such as steel, cement, glass, and ceramic production. 122 Therefore, the development of non-vanadium-based catalysts with high NO x conversion, a wide temperature window (100–300 °C), and high SO 2 resistance is of great importance. Catalysts based on transition-metal oxides have demonstrated excellent denitrification performance.…”

Water in the ball-milling process affects the dispersion of vanadia species on V2O5/TiO2 catalysts for NH3-SCR

“…13 Compared to the catalysts prepared by the wet impregnation method, V 2 O 5 /TiO 2 catalysts synthesised by the ball-milling method include a great amount of non-stoichiometric chemical species V x + , and show high SCR activity in mid/low temperature ranges. 14 In addition, the dry ball-milling method has also been proven to be able to induce a structural transformation from V 2 O 5 crystallites to monomeric species, leading to an increase in the SCR reactivity of V 2 O 5 /TiO 2 catalysts. 15 Therefore, the simple ball-milling method has good application prospects and would have an important effect on the physical-chemical properties and NH 3 -SCR activity of vanadia-based catalysts.…”