Low-temperature SCR of NO with NH3 over biomass char supported highly dispersed Mn Ce mixed oxides

Deactivation Effect of CaO on Mn-Ce/AC Catalyst for SCR of NO with NH3 at Low Temperature

“…In our previous study [10], the Mn-Ce carbon-based catalyst has been studied and the NO removal reaction occurred on catalyst followed the Eley-Rideal (E-R) mechanism. The specific reaction steps are as follows:…”

“…The FT-IR curves of both catalysts contained four bands at 1634, 3454, 1384 and 1080 cm −1 , which was corresponded to the stretching of C=O, the stretching vibrations of -OH groups, aliphatic C-H groups and C-O-C groups, respectively [32][33][34][35]. Studies have shown that -OH and C=O groups could provide adsorption sites for NH 3 and promote the transformation of ammonia gas (NH 3 (g)) to adsorbed ammonia (NH 3 (ads)) [10,36,37]. Besides, NH 3 and NO were more easily adsorbed when functional groups existed on the AC surface [33,37].…”

“…An attractive alternative for lower temperatures, and thus for tail-end configuration without or with much lower flue gas heating, is the application of activated carbons (ACs) [6][7][8]. In our previous study [1,[9][10][11][12], MnO 2 and CeO 2 supported on AC catalyst showed outstanding SCR activity at the lower temperature. Therefore, it is expected to work successfully in the NO removal of sintered flue gas.…”

Catalytic oxidation of NO over MnOx–CoOx/TiO2 in the presence of a low ratio of O3/NO: activity and mechanism

“…Selective catalytic reduction and selective non-catalytic reduction are widely used in industry, 1 but the problems of high reaction temperature requirement, NH 3 escape in ue gas, and difficulty in removing low concentrations of NO x still exist. [2][3][4] In recent years, the oxidation technology of NO to NO 2 has received attention. [5][6][7][8] In particular, the applications of transition metal oxides to catalytic oxidation of NO were studied.…”

Highly Efficient Absorption of NO by Amine-Based Functional Deep Eutectic Solvents

“…Up to now, selective catalytic reduction (SCR) , and selective noncatalytic reduction (SNCR) , are the two main methods for the removal of NO in the industry. However, they are facing some problems, such as high removal temperatures, the formation of N 2 O at high temperatures, and high costs due to the easy deactivation of the catalysts . For the past few decades, literature has reported that ionic liquids (ILs) can be considered as promising gas absorbents − because of their quite low volatility, high thermal stability, and tunable structure.…”