Mechanochemical localization of vanadia on titania to prepare a highly sulfur-resistant catalyst for low-temperature NH3-SCR

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)

Add to Collection

Article Chemistry, Physical

Interconversion between Lewis and Bronsted-Lowry acid sites on vanadia-based catalysts

Rob Jeremiah G. Nuguid et al.

Summary: Temperature, gas feed, and catalyst composition affect the interplay between Lewis acid sites (LAS) and Bronsted-Lowry acid sites (BAS) on vanadia-based materials. Transient experimentation can isolate different LAS, and water can increase BAS. These findings are important for understanding the relationship between LAS and BAS and their role in catalyst reactivity.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2022)

Add to Collection

Article Chemistry, Physical

Mechanochemically tailoring oxygen vacancies of MnO2 for efficient degradation of tetrabromobisphenol A with peroxymonosulfate

Sylvestre Ndayiragije et al.

Summary: Oxygen vacancy engineering can enhance the catalytic activity of metal oxides. Using a solvent-free mechanochemical method, the VO levels on the surface of commercial MnO2 were successfully tailored, leading to improved catalytic performance. Singlet oxygen, generated from PMS and lattice oxygen of MnO2, plays a crucial role in the degradation of TBBPA. The Mn4+/Mn3+ redox couple is more important in catalytic activity.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Add to Collection

Article Engineering, Environmental

Enhanced SO2 resistance of V2O5/WO3-TiO2 catalyst physically mixed with alumina for the selective catalytic reduction of NOx with NH3

Se Won Jeon et al.

Summary: In this study, a hybrid catalyst was introduced, which exhibited better stability and sulfur tolerance during SO2 aging. The hybrid catalyst achieved the direct migration of ammonium bisulfate from the vanadia domain to the alumina domain through physical contact, rather than gas-phase adsorption. The surface properties of the mixed alumina played an important role in its affinity to ammonium bisulfate and reusability.

CHEMICAL ENGINEERING JOURNAL (2022)

Add to Collection

Review Nanoscience & Nanotechnology

Recent trends in vanadium-based SCR catalysts for NOx reduction in industrial applications: stationary sources

Bora Ye et al.

Summary: This review comprehensively analyzes the properties required for SCR catalysts in different industries and the development strategies of high-performance and low-temperature vanadium-based catalysts. It discusses the advancements in catalyst composition, structure, dispersion, and side reaction suppression technology. The review also highlights the importance of understanding the usage of vanadium-based catalysts in stationary sources and the research trends related to nano-dispersion and catalyst structure in controlling side reactions.

NANO CONVERGENCE (2022)

Add to Collection

Article Chemistry, Physical

Tailoring the mechanochemical interaction between vanadium oxides and zeolite for sulfur-resistant DeNOX catalysts

Inhak Song et al.

Summary: Utilizing mechanochemical interactions to fabricate hybrid catalysts is an important emerging area in heterogeneous catalysis. This study reports the unusual deactivation of a vanadia catalyst and successfully resolves this issue through surface functionalization, resulting in a hybrid catalyst with superior sulfur resistance in low-temperature SCR.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Add to Collection

Article Engineering, Environmental

Cerium manganese oxides coupled with ZSM-5: A novel SCR catalyst with superior K resistance

Jiawei Ji et al.

Summary: This study presents a smart strategy to overcome the K poisoning problem of CeMn catalysts by physically coupling with ZSM-5. The results show that the deactivation of CeMn catalysts by K loading is mainly caused by the formation of chemically inert nitrates. By hybridizing with ZSM-5, the stable nitrates over CeMn can be easily activated and consumed, transforming poisoning sites into active sites and ensuring superior catalytic performance.

CHEMICAL ENGINEERING JOURNAL (2022)

Add to Collection

Article Chemistry, Multidisciplinary

In situ spectroscopic studies of the effect of water on the redox cycle of Cu ions in Cu-SSZ-13 during selective catalytic reduction of NOx

Hwangho Lee et al.

Summary: This study investigates the effect of water on the behavior of active Cu2+ ions in the NH3-SCR reaction. The addition of water significantly enhances the reduction of NOx over the catalyst, and the presence of water promotes the redox cycle of Cu ions.

CHEMICAL COMMUNICATIONS (2022)

Add to Collection

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)

Add to Collection

Article Multidisciplinary Sciences

Simple physical mixing of zeolite prevents sulfur deactivation of vanadia catalysts for NOx removal

Inhak Song et al.

Summary: This study demonstrates that physically mixed H-Y zeolite can protect vanadium active sites effectively by trapping ABS in micropores, enabling the catalyst to operate stably at low temperatures and maintaining sulfur resistance during repeated aging/regeneration cycles. The pore structure and framework Al content of different zeolites play a crucial role in determining the trapping ability.

NATURE COMMUNICATIONS (2021)

Add to Collection

Article Chemistry, Physical

Effects of the morphology and crystal-plane of TiO2 on NH3-SCR performance and K tolerance of V2O5-WO3/TiO2 catalyst

Jun Cao et al.

Summary: TiO2 nano-rods have a larger BET surface area compared to nano-octahedrons and nano-truncated octahedrons, facilitating the dispersion of active species and enhancing surface acidity and redox ability. V2O5-WO3/TiO2-NRs catalyst exhibits a stronger interaction between active species and support, leading to increased chemisorbed oxygen ratio and improved performance in NH3-SCR reaction under both Langmuir-Hinshelwood and Eley-Rideal mechanisms.

APPLIED CATALYSIS A-GENERAL (2021)

Add to Collection

Article Chemistry, Physical

A dual catalytic strategy by the nature of the functionalization effect as well as active species on vanadium-based catalyst for enhanced low temperature SCR

Dong Wook Kwon et al.

Summary: W-Ce and Sb-Ce systems have shown promising surface reaction properties in SCR, with the Sb-Ce system exhibiting better surface functionalization and active site improvement effects.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Add to Collection

Article Chemistry, Physical

Structure-Activity Relationships of Hydrothermally Aged Titania-Supported Vanadium-Tungsten Oxide Catalysts for SCR of NOx Emissions with NH3

Jun-Kun Lai et al.

Summary: Supported V2O5-WO3/TiO2 materials are employed as SCR catalysts for NOx emission control. The surface WOx sites stabilize the TiO2 phase, while the surface VOx sites mainly exist as V-5+O-x sites. The concentration of surface NH3* species is lower in hydrothermally treated catalysts, but SCR activity is comparable to calcined catalysts.

ACS CATALYSIS (2021)

Add to Collection

Review Chemistry, Multidisciplinary

Mechanochemistry for Synthesis

Tomislav Friscic et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Add to Collection

Article Chemistry, Multidisciplinary

Effect of vanadia loading on acidic and redox properties of VOx/TiO2 for the simultaneous abatement of PCDD/Fs and NOx

M. Gallastegi-Villa et al.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2020)

Add to Collection

Article Engineering, Environmental

Core-shell-like structured α-MnO2@CeO2 catalyst for selective catalytic reduction of NO: Promoted activity and SO2 tolerance

Lina Gan et al.

CHEMICAL ENGINEERING JOURNAL (2020)

Add to Collection

Article Chemistry, Physical

Understanding the deposition and reaction mechanism of ammonium bisulfate on a vanadia SCR catalyst: A combined DFT and experimental study

Xiangmin Wang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

Add to Collection

Article Energy & Fuels

The Interaction of NH4HSO4 with Vanadium-Titanium Catalysts Modified with Molybdenum and Tungsten

Jie Yu et al.

ENERGY & FUELS (2020)

Add to Collection

Article Chemistry, Physical

Understanding the dynamic behavior of acid sites on TiO2-supported vanadia catalysts via operando DRIFTS under SCR-relevant conditions

Inhak Song et al.

JOURNAL OF CATALYSIS (2020)

Add to Collection

Article Chemistry, Multidisciplinary

Milling Down to Nanometers: A General Process for the Direct Dry Synthesis of Supported Metal Catalysts

Hannah Schreyer et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

Add to Collection

Article Chemistry, Multidisciplinary

Methane to Chloromethane by Mechanochemical Activation: A Selective Radical Pathway

Marius Bilke et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2019)

Add to Collection

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)

Add to Collection

Article Chemistry, Physical

Bulk Vanadium Oxide versus Conventional V2O5/TiO2: NH3-SCR Catalysts Working at a Low Temperature Below 150 °C

Yusuke Inomata et al.

ACS CATALYSIS (2019)

Add to Collection

Article Multidisciplinary Sciences

High-surface-area corundum by mechanochemically induced phase transformation of boehmite

Amol P. Amrute et al.

SCIENCE (2019)

Add to Collection

Article Chemistry, Physical

Chemisorption of NH3 on Monomeric Vanadium Oxide Supported on Anatase TiO2: A Combined DRIFT and DFT Study

Inhak Song et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2018)

Add to Collection

Article Chemistry, Physical

A Perspective on the Selective Catalytic Reduction (SCR) of NO with NH3 by Supported V2O5-WO3/TiO2 Catalysts

Jun-Kun Lai et al.

ACS CATALYSIS (2018)

Add to Collection

Article Chemistry, Multidisciplinary

Effect of vanadium surface density and structure in VOx/TiO2 on selective catalytic reduction by NH3

Jong Min Won et al.

KOREAN JOURNAL OF CHEMICAL ENGINEERING (2018)

Add to Collection

Article Multidisciplinary Sciences

Polymeric vanadyl species determine the low-temperature activity of V-based catalysts for the SCR of NOx with NH3

Guangzhi He et al.

SCIENCE ADVANCES (2018)

Add to Collection

Article Chemistry, Physical

Recent Progress on Establishing Structure-Activity Relationship of Catalysts for Selective Catalytic Reduction (SCR) of NOx with NH3

Xiaosheng Huang et al.

CATALYSIS SURVEYS FROM ASIA (2018)

Add to Collection

Article Energy & Fuels

Ammonium bisulfate formation and reduced load SCR operation

Lawrence Muzio et al.

FUEL (2017)

Add to Collection

Article Chemistry, Multidisciplinary

Nature of Active Sites and Surface Intermediates during SCR of NO with NH3 by Supported V2O5-WO3/TiO2 Catalysts

Minghui Zhu et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Add to Collection

Article Engineering, Environmental

New insights into the various decomposition and reactivity behaviors of NH4HSO4 with NO on V2O5/TiO2 catalyst surfaces

Dong Ye et al.

CHEMICAL ENGINEERING JOURNAL (2016)

Add to Collection

Article Chemistry, Multidisciplinary

Exploring the role of V2O5 in the reactivity of NH4HSO4 with NO on V2O5/TiO2 SCR catalysts

Ruiyang Qu et al.

RSC ADVANCES (2016)

Add to Collection

Article Chemistry, Physical

The role of ceria on the activity and SO2 resistance of catalysts for the selective catalytic reduction of NOx by NH3

Dong Wook Kwon et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2015)

Add to Collection

Article Environmental Sciences

Vanadium and tungsten release from V-based selective catalytic reduction diesel aftertreatment

Z. Gerald Liu et al.

ATMOSPHERIC ENVIRONMENT (2015)

Add to Collection

Review Chemistry, Physical

Catalysts for the selective catalytic reduction of NOx with NH3 at low temperature

Wenpo Shan et al.

CATALYSIS SCIENCE & TECHNOLOGY (2015)

Add to Collection

Article Chemistry, Physical

Novel sulfation effect on low-temperature activity enhancement of CeO2-added Sb-V2O5/TiO2 catalyst for NH3-SCR

Muhammad Salman Maqbool et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2014)

Add to Collection

Article Chemistry, Physical

Role of WO3 in the Hg Oxidation across the V2O5-WO3-TiO2 SCR Catalyst: A DFT Study

Ana Suarez Negreira et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2013)

Add to Collection

Article Chemistry, Physical

Effect of Sulfur on Mn/Ti Catalysts Prepared Using Chemical Vapor Condensation (CVC) for Low-Temperature NO Reduction

Eunseuk Park et al.

ACS CATALYSIS (2013)

Add to Collection

Article Chemistry, Applied

Low-temperature selective catalytic reduction of NOx with NH3 over metal oxide and zeolite catalysts-A review

Junhua Li et al.

CATALYSIS TODAY (2011)

Add to Collection

Article Economics

Effects of SO2 and NOx control on energy-efficiency power generation

W. H. J. Graus et al.

ENERGY POLICY (2007)

Add to Collection

Article Chemistry, Physical

Molecular/electronic structure-surface acidity relationships of model-supported tungsten oxide catalysts

Taejin Kim et al.

JOURNAL OF CATALYSIS (2007)

Add to Collection

Article Chemistry, Physical

Quantitative determination of the speciation of surface vanadium oxides and their catalytic activity

Hanjing Tian et al.

JOURNAL OF PHYSICAL CHEMISTRY B (2006)

Add to Collection

Article Chemistry, Physical

Characteristics of V2O5 supported on sulfated TiO2 for selective catalytic reduction of NO by NH3

ST Choo et al.

APPLIED CATALYSIS A-GENERAL (2000)

Add to Collection

Mechanochemical localization of vanadia on titania to prepare a highly sulfur-resistant catalyst for low-temperature NH3-SCR

Related references

Export Citation

Share Paper