Experimental investigation on the decomposition of NH4HSO4 over V2O5-WO3/TiO2 catalyst by NH4NO3 at low temperature

Strategy and Technical Progress of Recycling of Spent Vanadium–Titanium-Based Selective Catalytic Reduction Catalysts

“…This method ensures the recovery of catalyst efficiency to a level comparable to that of new catalysts and is equally suitable for high-volume treatment in industrial power stations. Zheng et al 85 added ammonium nitrate (NH 4 NO 3 ) to spent SCR catalysts with simulated NH 4 HSO 4 deposition deactivation and found that the addition of NH 4 NO 3 not only improved NO x conversion at low temperatures but also accelerated the removal of NH 4 HSO 4 on the catalyst surface and effectively prevented the new deposition of NH 4 HSO 4 .…”

Low-temperature selective catalytic reduction of NO with NH3 over an FeOx/β-MnO2 composite

“…It had a narrow activation temperature window and was typically used in flue gases above 320 °C to ensure high NO x removal activity. 13,14 Whereas its denitrification activity was inhibited while the flue gas temperature was lower. In addition, vanadium-containing catalysts were biotoxicity and prone to secondary contamination after deactivation or aging.…”

Mn-Ce catalysts/LDPC Modified by Mo for Improving NH3-SCR Performance and SO2 Resistance at Low Temperature

“…The selective catalytic reduction of ammonia (NH 3 -SCR) as a mature denitrification technology has been widely used in the power generation industry. Although vanadium-based catalysts have been widely used, especially V 2 O 5 -WO 3 /TiO 2 , they have high activity only in the temperature range of 300-400 • C [7][8][9]. The flue gas from the iron and steel industry was less than 300 • C and included H 2 O and SO 2, which are harmful to catalytic performance [10][11][12][13].…”