Design and identify the confinement effect of active site position on catalytic performance for selective catalytic reduction of NO with NH3 at low temperature

Article Chemistry, Physical

Effects of SO2 on standard and fast SCR over CeWOx: A quantitative study of the reaction pathway and active sites

Yanlong Huo et al.

Summary: The presence of SO₂ has less severe negative effects on the fast SCR process compared to standard SCR. SO₂ inhibits NO adsorption and the nitrite path, leading to decreased SCR activity, especially at low temperatures.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

添加到收藏夹

Article Chemistry, Physical

Facile preparation, catalytic performance and reaction mechanism of MnxCo1-xOδ/3DOM-m Ti0.7Si0.2W0.1Oy catalysts for the simultaneous removal of soot and NOx

Lanyi Wang et al.

Summary: In this study, MnxCo1-xOδ/3DOM-m TiSiWO catalysts with highly ordered porous structures were prepared using colloidal crystal templating and incipient wetness impregnation methods. Among them, the Mn0.5Co0.5Oδ/3DOM-m TiSiWO catalyst exhibited the best catalytic performance for simultaneous removal of diesel soot and NOx under simulated real conditions. The reaction mechanism and adsorption behavior of the catalyst were investigated using in situ DRIFTS and DFT calculations. Moreover, the role of H2O in simultaneous removal of soot and NOx was also studied.

CATALYSIS SCIENCE & TECHNOLOGY (2022)

添加到收藏夹

Article Chemistry, Physical

Effect of redox promoters (CeOx and CuOx) and surface sulfates on the selective catalytic reduction (SCR) of NO with NH3 by supported V2O5-WO3/TiO2 catalysts

Mingyu Guo et al.

Summary: In this study, the effects of a series of TiO2-supported MOx catalysts on SCR activity were investigated. The results showed that the supported MOx phases were completely dispersed on the TiO2 support. The addition of basic or acidic sites reduced the number of surface Lewis acid sites. Surface VOx, WOx, and SOx sites introduced surface Bronsted acid sites. The redox promoters increased the conversion of NO, but SOx impregnation inhibited their effect. Additionally, the study resolved the long-standing dispute on the involvement of surface NH3* or NH4+* species in the SCR reaction.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

添加到收藏夹

Article Engineering, Environmental

SO2-Tolerant Catalytic Reduction of NOx via Tailoring ElectronTransfer between Surface Iron Sulfate and Subsurface Ceria

Xinran Qi et al.

Summary: This study demonstrates successful SO2-tolerant NOx reduction by tailoring the electron transfer between surface iron sulfate and subsurface ceria. The engineered structure of surface iron sulfate and subsurface ceria significantly improves the reactivity and reaction efficiency of the catalyst in the presence of SO2.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

添加到收藏夹

Article Engineering, Environmental

Boosting SO2-Resistant NOx Reduction by Modulating Electronic Interaction of Short-Range Fe-O Coordination over Fe2O3/TiO2 Catalysts

Xiangyu Liu et al.

Summary: SO2-resistant NOx reduction has been enhanced by modulating electronic interaction of short-range Fe-O coordination over Fe2O3/TiO2 catalysts. Sulfur doping exerts strong electronic perturbation to TiO2, causing a net charge transfer from Fe2O3 to TiO2 via increased short-range Fe-O coordination. This electronic effect simultaneously weakens charge transfer from Fe2O3 to SO2 and enhances that from NO/NH3 to Fe2O3.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

添加到收藏夹

Review Chemistry, Physical

Conquering ammonium bisulfate poison over low-temperature NH3-SCR catalysts: A critical review

Kai Guo et al.

Summary: This review focuses on recent progress in controlling ABS deposition/decomposition during the NH3-SCR process for sustainable denitration. It covers the physicochemical properties of ABS, common methods for analyzing ABS on catalyst surfaces, strategies for restraining ABS formation and accelerating ABS decomposition, as well as suggestions for future research on ABS poisoning. The review aims to provide guidance for designing NH3-SCR catalysts with high tolerance to ABS poisoning.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

添加到收藏夹

Article Engineering, Environmental

A basic comprehensive study on synergetic effects among the metal oxides in CeO2-WO3/TiO2 NH3-SCR catalyst

Xuesong Liu et al.

Summary: The study found that the formation of solid solutions and high specific surface area in catalysts would increase the amounts of Ce3+, oxygen vacancies, and acid sites, broadening the operating temperature window of NH3-SCR reaction. This enhances N-2 selectivity by promoting fast SCR reaction at low temperatures and inhibiting the unselective oxidation of NH3 at high temperatures.

CHEMICAL ENGINEERING JOURNAL (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

The Absence of Oxygen in Sulfation Promotes the Performance of the Sulfated CeO2 Catalyst for Low-Temperature Selective Catalytic Reduction of NOx by NH3: Redox Property versus Acidity

Qin Wu et al.

Summary: This study demonstrates that anaerobic sulfation can significantly enhance the SCR rate of CeO2 catalyst without affecting selectivity and stability. Spectroscopic analysis shows that anaerobic SO2 treatment increases the number and strength of Lewis acid sites on the catalyst, providing direct evidence that acidity, rather than redox properties, determines the performance of Ce-based SCR catalysts.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

Copper Doping Promotion on Ce/CAC-CNT Catalysts with High Sulfur Dioxide Tolerance for Low-Temperature NH3-SCR

Lin Yang et al.

Summary: This study has successfully developed a new catalyst for improving low-temperature NH3-SCR reaction, achieving high efficiency in NO conversion rate and N2 selectivity. The introduction of copper enhanced the catalytic activity, effectively preventing the adsorption and oxidation of surface SO2.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

添加到收藏夹

Article Chemistry, Physical

Two steps synthesis of CeTiOx oxides nanotube catalyst: Enhanced activity, resistance of SO2 and H2O for low temperature NH3-SCR of NOx

Zhiping Zhang et al.

Summary: CeTiOx-T with nanotube structure exhibits excellent catalytic activity, SO2 and H2O tolerance, and stability in NH3-SCR reaction. The strong interaction between Ce and Ti leads to short-range ordered Ce-O-Ti species, resulting in a larger BET surface area and higher NH3-SCR performance than traditional catalysts. In situ DRIFTS results suggest different reaction mechanisms at low and high temperatures over CeTiOx-T.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

添加到收藏夹

Article Engineering, Environmental

Ce-Si Mixed Oxide: A High Sulfur Resistant Catalyst in the NH3-SCR Reaction through the Mechanism-Enhanced Process

Wei Tan et al.

Summary: Investigating catalytic reaction mechanisms can guide catalyst design, as demonstrated by the innovative CeO2-SiO2 mixed oxide catalyst (CeSi2) with excellent SO2/H2O resistance in harsh working conditions. The strong Ce-O-Si interaction and abundant surface hydroxyl groups on CeSi2 provide active acid sites and inhibit SO2 adsorption, enhancing the NH3-SCR performance through an enhanced Eley-Rideal mechanism. This work offers a strategy to develop an environmentally friendly NH3-SCR catalyst with superior SO2 resistance.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

添加到收藏夹

Article Chemistry, Physical

Construction of Fe2O3 loaded and mesopore confined thin-layer titania catalyst for efficient NH3-SCR of NOx with enhanced H2O/SO2 tolerance

Kai Guo et al.

Summary: Engineering the surface structure of TiO2 can enhance catalytic performance and stability, as well as improve the activity of NH3 selective catalytic reduction for denitration.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

添加到收藏夹

Article Chemistry, Applied

New CeO2-TiO2, WO3-TiO2 and WO3-CeO2-TiO2 mesoporous aerogel catalysts for the low temperature selective catalytic reduction of NO by NH3

Jihene Arfaoui et al.

Summary: The addition of Ce and/or W influences differently the structure, texture, crystallites size, surface oxygen concentration, total acidity and redox ability of aerogel samples and clearly affects their NO-SCR activity. It was found that cerium species are more active in the low temperature NO-SCR reaction than tungsten ones, and the NO conversion into N-2 reaches 85% at 300 degrees C and exceeds 90% between 320 and 400 degrees C over the WO3-CeO2-TiO2 catalyst.

JOURNAL OF POROUS MATERIALS (2021)

添加到收藏夹

Article Chemistry, Applied

In situ confined encapsulation strategy for construction of Co3O4@SiO2 catalyst for the efficient elimination of toluene

Meng Wen et al.

Summary: A novel in situ confined encapsulation strategy was developed for constructing Co3O4@SiO2 catalysts through the vacuum self-assembly method. Two types of ordered mesoporous Co3O4@SiO2 catalysts with different pore diameters were obtained for catalytic combustion of toluene. The results showed that the OM-Co3O4@SBA-15 catalyst with a 16 nm pore diameter exhibited excellent toluene catalytic oxidation activity and good thermal stability.

MICROPOROUS AND MESOPOROUS MATERIALS (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

Significant differences of NH3-SCR performances between monoclinic and hexagonal WO3 on Ce-based catalysts

Shuang Liu et al.

Summary: This study systematically investigates the effects of different WO3 phases on the NH3-SCR performance of Ce-based catalysts, finding that hexagonal WO3 (W-h) significantly enhances the performance of Ce-based catalysts in the NH3-SCR reaction compared to monoclinic WO3 (W-m). The CeO2-WO3-hexagonal (Ce-W-h) catalyst displays a more impressive NOx removal efficiency and lower temperature thresholds compared to CeO2-WO3-monoclinic (Ce-W-m), highlighting the importance of crystal phase selection in catalyst design.

ENVIRONMENTAL SCIENCE-NANO (2021)

添加到收藏夹

Article Chemistry, Physical

A study on the structure of tungsten by the addition of ceria: Effect of monomeric structure over W/Ce/TiO2 catalyst on the SCR reaction

Geo Jong Kim et al.

APPLIED SURFACE SCIENCE (2020)

添加到收藏夹

Article Engineering, Environmental

Synthesis of CenTiOx flakes with hierarchical structure and its enhanced activity for selective catalytic reduction of NOx with NH3

Xiaoyu Zhao et al.

CHEMICAL ENGINEERING JOURNAL (2020)

添加到收藏夹

Article Chemistry, Physical

Component synergistic catalysis of Ce-Sn-W-Ba-Ox/TiO2 in selective catalytic reduction of NO with ammonia

Qijie Jin et al.

APPLIED SURFACE SCIENCE (2020)

添加到收藏夹

Article Engineering, Environmental

Mechanism by which three-dimensional ordered mesoporous CeO2 promotes the activity of VOx-MnOx/CeO2 catalysts for NOx abatement: Atomic-scale insight into the catalytic cycle

Xiaomin Wu et al.

CHEMICAL ENGINEERING JOURNAL (2020)

添加到收藏夹

Article Chemistry, Physical

Insight into Cu2O/CuO collaboration in the selective catalytic reduction of NO with NH3: Enhanced activity and synergistic mechanism

Xu Wu et al.

JOURNAL OF CATALYSIS (2020)

添加到收藏夹

Article Chemistry, Physical

Improved Activity and SO2 Resistance by Sm-Modulated Redox of MnCeSmTiOx Mesoporous Amorphous Oxides for Low-Temperature NH3-SCR of NO

Bing Wang et al.

ACS CATALYSIS (2020)

添加到收藏夹

Article Chemistry, Multidisciplinary

Solvent Effects on the Low-Temperature NH3-SCR Activity and Hydrothermal Stability of WO3/SiO2@CeZrOx Catalyst

Shuang Liu et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2020)

添加到收藏夹

Article Engineering, Environmental

Unveiling the Remarkable Arsenic Resistance Origin of Alumina Promoted Cerium-Tungsten Catalysts for NH3-SCR

Si Jiang et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2020)

添加到收藏夹

Article Chemistry, Multidisciplinary

Modification of composite catalytic material CumVnOx@CeO2core-shell nanorods with tungsten for NH3-SCR

Xiaosheng Huang et al.

NANOSCALE (2020)

添加到收藏夹

Article Chemistry, Multidisciplinary

An environmentally friendly wide temperature CeWTiOx catalyst with superior performance for the selective catalytic reduction NOx with NH3

Huang Xiaosheng et al.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2019)

添加到收藏夹

Article Nanoscience & Nanotechnology

Morphology-Oriented ZrO2-Supported Vanadium Oxide for the NH3-SCR Process: Importance of Structural and Textural Properties

Shanshan Liu et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

添加到收藏夹

Article Nanoscience & Nanotechnology

Spatially Confined Tuning the Interfacial Synergistic Catalysis in Mesochannels toward Selective Catalytic Reduction

Xianqiang Ran et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

添加到收藏夹

Article Chemistry, Multidisciplinary

Confinement Catalysis with 2D Materials for Energy Conversion

Lei Tang et al.

ADVANCED MATERIALS (2019)

添加到收藏夹

Review Chemistry, Multidisciplinary

Selective Catalytic Reduction of NOx with NH3 by Using Novel Catalysts: State of the Art and Future Prospects

Lupeng Han et al.

CHEMICAL REVIEWS (2019)

添加到收藏夹

Article Engineering, Environmental

Improved NOx Reduction in the Presence of SO2 by Using Fe2O3-Promoted Halloysite-Supported CeO2-WO3 Catalysts

Lin Kang et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2019)

添加到收藏夹

Article Chemistry, Physical

Quantitative study of the NH3-SCR pathway and the active site distribution over CeWOx at low temperatures

Kuo Liu et al.

JOURNAL OF CATALYSIS (2019)

添加到收藏夹

Article Engineering, Chemical

Mechanism and Kinetics Study on Low-Temperature NH3-SCR Over Manganese-Cerium Composite Oxide Catalysts

Feng Lin et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2019)

添加到收藏夹

Article Chemistry, Physical

Shape dependence and sulfate promotion of CeO2 for selective catalytic reduction of NOx with NH3

Lei Ma et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2018)

添加到收藏夹

Article Chemistry, Physical

Solvothermal synthesis of well-designed ceria-tin-titanium catalysts with enhanced catalytic performance for wide temperature NH3-SCR reaction

Guodong Zhang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2018)

添加到收藏夹

Review Engineering, Environmental

Development of wide-temperature vanadium-based catalysts for selective catalytic reducing of NOx with ammonia: Review

Junqiang Xu et al.

CHEMICAL ENGINEERING JOURNAL (2018)

添加到收藏夹

Article Chemistry, Physical

Experimental assessment of the bifunctional NH3-SCR pathway and the structural and acid-base properties of WO3 dispersed on CeO2 catalysts

Masaoki Iwasaki et al.

JOURNAL OF CATALYSIS (2018)

添加到收藏夹

Article Engineering, Environmental

A new 3DOM Ce-Fe-Ti material for simultaneously catalytic removal of PM and NOx from diesel engines

Ying Cheng et al.

JOURNAL OF HAZARDOUS MATERIALS (2018)

添加到收藏夹

Article Chemistry, Physical

Acid pretreatment effect on the physicochemical property and catalytic performance of CeO2 for NH3-SCR

Xiaojiang Yao et al.

APPLIED CATALYSIS A-GENERAL (2017)

添加到收藏夹

Article Chemistry, Physical

Efficient NH3-SCR removal of NOx with highly ordered mesoporous WO3(χ)-CeO2 at low temperatures

Sihui Zhan et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2017)

添加到收藏夹

Article Chemistry, Physical

Design of MoFe/Beta@CeO2 catalysts with a core-shell structure and their catalytic performances for the selective catalytic reduction of NO with NH3

Jixing Liu et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2017)

添加到收藏夹

Article Chemistry, Physical

Three-dimensional ordered mesoporous CeXZr1-XO2 for selective catalytic reduction removal of NOX with NH3

Yi Li et al.

APPLIED CATALYSIS A-GENERAL (2016)

添加到收藏夹

Article Chemistry, Multidisciplinary

Supported metal sulfates on Ce-TiOx as catalysts for NH3-SCR of NO: High resistances to SO2 and potassium

Xuesen Du et al.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2016)

添加到收藏夹

Article Chemistry, Physical

Mechanistic Study of Selective Catalytic Reduction of NO with NH3 on W-Doped CeO2 Catalysts: Unraveling the Catalytic Cycle and the Role of Oxygen Vacancy

Bing Liu et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2016)

添加到收藏夹

Article Nanoscience & Nanotechnology

Significant Promotion Effect of Mo Additive on a Novel Ce-Zr Mixed Oxide Catalyst for the Selective Catalytic Reduction of NOx with NH3

Shipeng Ding et al.

ACS APPLIED MATERIALS & INTERFACES (2015)

添加到收藏夹

Article Chemistry, Physical

Getting insight into the influence of SO2 on TiO2/CeO2 for the selective catalytic reduction of NO by NH3

Lei Zhang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2015)

添加到收藏夹

Article Chemistry, Physical

Ordered mesoporous TiO2 with exposed (001) facets and enhanced activity in photocatalytic selective oxidation of alcohols

Jinguo Wang et al.

JOURNAL OF MATERIALS CHEMISTRY A (2013)

添加到收藏夹

Article Engineering, Environmental

Enhancement of Activity and Sulfur Resistance of CeO2 Supported on TiO2-SiO2 for the Selective Catalytic Reduction of NO by NH3

Caixia Liu et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2012)

添加到收藏夹

Article Chemistry, Multidisciplinary

Novel cerium-tungsten mixed oxide catalyst for the selective catalytic reduction of NOx with NH3

Wenpo Shan et al.

CHEMICAL COMMUNICATIONS (2011)

添加到收藏夹

Article Chemistry, Physical

Thermal decomposition of the rare earth sulfates of cerium(III), cerium(IV), lanthanum(III) and samarium(III)

JA Poston et al.

APPLIED SURFACE SCIENCE (2003)

添加到收藏夹

Design and identify the confinement effect of active site position on catalytic performance for selective catalytic reduction of NO with NH3 at low temperature

相关参考文献

导出引文

分享论文