A Short Review of Layered Double Oxide-Based Catalysts for NH3-SCR: Synthesis and NOx Removal DOI Open Access
Tao Sun, Xin Wang, Jinshan Zhang

и другие.

Catalysts, Год журнала: 2024, Номер 14(11), С. 755 - 755

Опубликована: Окт. 26, 2024

Nitrogen oxides are one of the main atmospheric pollutants and pose a threat to ecological environment human health. Selective catalytic reduction (NH3-SCR) is an effective way removing nitrogen oxides, with catalyst being key this technology. Two-dimensional nanostructured layered double oxide (LDO) has attracted increasing attention due controllability cations in layers exchangeability anions between layers. As derivative hydroxide (LDH), LDO not only inherits diversity inherent LDH structure but also exhibits excellent performance field. This article contains three sections. It begins brief discussion development catalysts analyzes advantages structure. The later section introduces synthesis methods LDH, clarifies conversion relationship LDO, summarizes modification impacts properties catalysts. application used NH3-SCR under wild temperature conditions discussed, different types, reaction processes, mechanisms described third section. Finally, future research directions outlooks offered assist overcome difficult points related NH3-SCR.

Язык: Английский

Construction of mesoporous amorphous Smα-MnTiOx with high deNOx performance and sulfur Tolerance: Insight into the synergistic Sulfur-Resistant effect between Manganese-Samarium species DOI

Xin-Gao Hou,

Jitong Wang, Cheng Ma

и другие.

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132030 - 132030

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Selective Catalytic Reduction of NO by NH3 and SOx Poisoning Mechanisms on Mn3O4 Catalysts: A Density Functional Investigation DOI Open Access
Houyu Zhu, Zhong Liu, Xiaoxin Zhang

и другие.

Catalysts, Год журнала: 2025, Номер 15(3), С. 241 - 241

Опубликована: Март 3, 2025

Mn-based oxides are promising catalysts for the selective catalytic reduction (SCR) of NOx by NH3 at low temperatures. However, fundamental NH3-SCR mechanisms and resistance against SOx remain controversial. This study employed density functional theory (DFT) calculations to explore intrinsic poisoning on Mn3O4(001). Both NO adsorb atop surface Mn site (the Lewis acid site). In contrast traditional Langmuir–Hinshelwood (L-H) mechanism in which gaseous is first oxidized form adsorbed nitrites or nitrates then react with NHx species produce H2O N2, a new potential L-H pathway proposed that involves adsorbing reacting NH* generate key intermediate NHNO*, followed formation N2. more efficient as it bypasses oxidation step N2 avoiding N2O production. addition, favorable than Eley–Rideal (E-R) because lower free energy profile. SO2 exhibits limited effects, whereas SO3 strongly poisons Mn3O4(001) occupying adsorption sites, hindering producing ammonium bisulfate.

Язык: Английский

Процитировано

0
Leveraging electron distribution reconstruction of spinel MnCo2O4 hollow microflowers for the aerobic oxidation of limonene DOI
Jiangyong Liu, Chennan Wang, Bing Liu

и другие.

Applied Catalysis A General, Год журнала: 2025, Номер unknown, С. 120331 - 120331

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0
A Short Review of Layered Double Oxide-Based Catalysts for NH3-SCR: Synthesis and NOx Removal DOI Open Access
Tao Sun, Xin Wang, Jinshan Zhang

и другие.

Catalysts, Год журнала: 2024, Номер 14(11), С. 755 - 755

Опубликована: Окт. 26, 2024

Nitrogen oxides are one of the main atmospheric pollutants and pose a threat to ecological environment human health. Selective catalytic reduction (NH3-SCR) is an effective way removing nitrogen oxides, with catalyst being key this technology. Two-dimensional nanostructured layered double oxide (LDO) has attracted increasing attention due controllability cations in layers exchangeability anions between layers. As derivative hydroxide (LDH), LDO not only inherits diversity inherent LDH structure but also exhibits excellent performance field. This article contains three sections. It begins brief discussion development catalysts analyzes advantages structure. The later section introduces synthesis methods LDH, clarifies conversion relationship LDO, summarizes modification impacts properties catalysts. application used NH3-SCR under wild temperature conditions discussed, different types, reaction processes, mechanisms described third section. Finally, future research directions outlooks offered assist overcome difficult points related NH3-SCR.

Язык: Английский

Процитировано

1