Tailoring the simultaneous abatement of methanol and NOx on Sb−Ce−Zr catalysts via copper modification

Unveiling the Promoting Effect of Niobium on Cu-KIT-6 Nanoporous Catalysts for the Selective Catalytic Reduction of NOx with High Resistance to Ammonium Bisulfate Poisoning

“…Among the numerous nanocatalysts investigated, Cu-based nanocatalysts with superior redox property could be one of promising candidates for the potential environment-friendly SCR catalysts. − However, the coexistence of gaseous SO 2 in flue gas from non-electricity industries is inevitable, which would exert a serious deactivation effect on NH 3 -SCR activity due to strong interactions between the Cu active phase and SO 2 . , Generally, poisoning mechanisms of SO 2 on NH 3 -SCR catalysts could be concluded as follows: , covering of active sites by the deposited ammonium bisulfate (ABS) and loss of redox capability after being sulfation. Importantly, the deposition of ABS is a problem that cannot be ignored, where many efforts had been devoted to conquering ABS poisoning over NH 3 -SCR catalysts. , Recently, pure silica molecular sieve-based nanoporous catalysts with a high surface area and mesopore structures have drawn much attention.…”