Improved NO_x reduction in the presence of alkali metals by using hollandite Mn–Ti oxide promoted Cu-SAPO-34 catalysts

Abstract

Hollandite Mn–Ti oxide promoted Cu-SAPO-34 catalysts exhibited outstanding deNOx performance and excellent resistance against alkali metal poisoning.

Improved Low‐Temperature Activity and H2O Resistance of Fe‐Doped Mn−Eu Catalysts for NO Removal by NH3−SCR

“…[18] Consequently, researchers have begun to work on studies about supported Mn-based SCR catalysts. Kaiwen Zha et al [14] also reported that hollandite MnÀ Ti oxide promoted Cu-SAPO-34 catalysts exhibited outstanding SCR activity and N 2 selectivity. Kaiwen Zha et al [14] also reported that hollandite MnÀ Ti oxide promoted Cu-SAPO-34 catalysts exhibited outstanding SCR activity and N 2 selectivity.…”

“…[19] TiO 2 , [20] Al 2 O 3 , [21] SiO 2 [22] and activated carbon (AC) [23] are usually used as supports. Kaiwen Zha et al [14] also reported that hollandite MnÀ Ti oxide promoted Cu-SAPO-34 catalysts exhibited outstanding SCR activity and N 2 selectivity. The results of many studies have found that supported Mn-based catalysts exhibit better levels of SCR performance, which is derived from the synergistic effect between MnO x and the support.…”

“…The commercial catalyst V 2 O 5 -WO 3 (MoO 3 )/TiO 2 exhibits excellent SCR activity in the temperature window of 300~450°C, but its catalytic activity dramatically decreases under lower temperatures and/or high H 2 O content levels. [14,15] Therefore, it is urgent to develop novel catalysts with outstanding low-temperature resistance. [9,10] Most catalysts currently studied have significantly improved lowtemperature activity.…”

“…[11][12][13] Another serious problem for SCR application is alkali poisoning. [14,15] Therefore, it is urgent to develop novel catalysts with outstanding low-temperature resistance.…”

Temperature‐dependent electrical transport behavior and structural evolution in hollandite‐type titanium‐based oxide

“…[9][10][11][12][13] In addition to the use of solid matrices for the immobilization of radioactive cesium and anode materials for lithium-ion batteries, [14][15][16][17] hollandite K x Ti 8 O 16 with large (2 × 2) tunnels could accommodate a large number of sodium ions and facilitate Na + diffusion in sodium ion batteries. [21][22][23][24] It is well established that these potential applications are directly determined by the structural and electrical transport properties (especially ionic and electronic conductivities). [21][22][23][24] It is well established that these potential applications are directly determined by the structural and electrical transport properties (especially ionic and electronic conductivities).…”