Catalytic reduction of NO by propene in the presence of oxygen over mechanically mixed metal oxides and Ce-ZSM-5

On the selectively catalytic reduction of NOx with methane over Ag-ZSM-5 catalysts

“…Li and Armor [15] and Li et al [16] and Lukyanov et al [17] provided strong evidence that the role of oxygen was to convert NO into NO 2 , and it was NO 2 that reacted with CH 4 . The important role of the adsorbed NO x in the SCR was further confirmed by Beutel et al [18], Bethke et al [28], and Yokoyama and Misono [29,30]. In Section 3.3, the assumption about the participation of adsorbed NO x in the reaction scheme is further studied through NO x -TPD and -TPR measurements.…”

Enhanced activity of an In–Fe2O3/H-ZSM-5 catalyst for NO reduction with methane

“…These results indicated that, with the addition of iron oxide to the In/H-ZSM-5 catalyst, higher activity and selectivity of the catalyst in excess oxygen for a wide range of reaction temperatures were developed. It is worth to point out that, manganese oxide, when mixed physically with an active de-NO x catalyst, has been reported to enhance the activity [19][20][21][22][23]. However, the effect of adding iron oxide to de-NO x catalysts has not been reported so far.…”

Improvement of thermal stability of NO oxidation Pt/Al2O3 catalyst by addition of Pd

“…Therefore, the SCR-HC is promoted by oxidizing NO to NO 2 in advance. It has been reported that the rate of SCR-HC is enhanced by mixing NO oxidation catalyst and SCR-HC catalyst mechanically [3]. Iwamoto et al [4] proposed a method of intermediate addition of reductant (IAR).…”