Remarkable effect of the incorporation of titanium on the catalytic activity and SO2 poisoning resistance of magnetic Mn–Fe spinel for elemental mercury capture

A novel low temperature catalyst regenerated from deactivated SCR catalyst for Hg0 oxidation

“…MnO x /TiO 2 was found effective for Hg 0 oxidation at a lower temperature (200 °C) [17]. Yang et al [12] revealed that the MnO x /γ-Fe 2 O 3 exhibited excellent catalytic activities on Hg 0 capture at a broad low temperature range (100-200 °C). It was also confirmed that multi-composite catalysts that contain manganese showed excellent mercury oxidation capacity [18,19].…”

“…Noble metal catalysts [11] have been shown with good catalytic capacities for Hg 0 oxidation at lower temperatures, but they are too expensive for large-scale industrial applications. Transition metal oxides catalysts, such as FeO x , MnO x and CoO x [4,[12][13][14][15][16], have been mainly investigated. Among them, the MnO x -based supported catalysts were found to be the most reliable candidates, owing to their excellent catalytic activities at lower temperature.…”

Enhancement using external magnetic field on mercury capture by fly ash

“…There are many effective sorbents to remove the Hg 0 from the combustion flue gas [3][4][5][6][7][8]. Among them, fly ash has received intensive interests in Hg 0 capture since this material as a by-product from coal-fired power plants has the innate superiority in the cost.…”

“…On the other hand, theoretical investigation is also conducted for a better understanding of interface mechanism between mercury and c-Fe 2 O 3 surface [17] material is benefit for mercury oxidation and removal. Then the iron modified technique becomes a promising approach to increase the mercury capture capacity of fly ash [4,5,18]. But magnetism includes magnetic material and external magnetic field (EMF).…”

Oxidation Catalysts for Elemental Mercury in Flue Gases—A Review

“…Kong et al [34] Mn-Fe spinels [32,65] and nanosized cation-deficient Fe-Ti spinels [66,67] were presented as effective materials for Hg el capture in the absence of HCl. The Hg el sorption capacity of Mn-Fe spinels was promoted by higher Mn contents.…”