☆ 4.6 Article

Effect of the preparation method on the catalytic properties of copper-containing zeolite Y applied for NH3-SCR-DeNOx

CATALYSIS SCIENCE & TECHNOLOGY (2023)

Related references

Note: Only part of the references are listed.

Article Environmental Sciences

Effect of Cu loading content on the catalytic performance of Cu-USY catalysts for selective catalytic reduction of NO with NH 3

Jie Wan et al.

Summary: A series of Cu-USY zeolite catalysts with different Cu loading content were synthesized by a simple impregnation method. The catalysts were characterized and evaluated for their selective catalytic reduction of NOx with NH3 (NH3-SCR) performance. The results showed that Cu-USY with proper Cu loading exhibited highly efficient NH3-SCR catalytic performance, low byproduct formation, and excellent hydrothermal stability. The catalytic advantages were attributed to the evolution of active Cu species and surface acid centers modulated by Cu loading. However, the over-introduction of Cu led to the formation of surface highly dispersed CuOx, causing unfavorable NH3 oxidation and inferior N2 selectivity.

JOURNAL OF ENVIRONMENTAL SCIENCES (2023)

Add to Collection

Article Chemistry, Physical

Mechanistic insights into the promotion of low-temperature NH3-SCR catalysis by copper auto-reduction in Cu-zeolites

Dongdong Chen et al.

Summary: In this study, it was found that Cu-chabazite (Cu-CHA) zeolite can improve the efficiency of ammonia-assisted selective reduction (NH3-SCR) of toxic NOx pollutants at low temperatures through self-reduction mechanism. The redistribution of charge induced by self-reduction favored NO activation, leading to the formation of closely interacting Cu+ center dot center dot center dot NO+ pairs and significantly promoting NO reduction efficiency.

APPLIED CATALYSIS B-ENVIRONMENTAL (2023)

Add to Collection

Article Chemistry, Applied

Micro-/mesoporous copper-containing zeolite Y applied in NH3-SCR, DeNOx

Rujito S. R. Suharbiansah et al.

Summary: Mesopores were successfully introduced into zeolite Y through sequential treatment, and the resulting Cu2+-modified materials exhibited similar catalytic performance in NH3-SCR of NOx. Rapid scan FT-IR analysis revealed the rate-determining step in the catalytic reaction.

MICROPOROUS AND MESOPOROUS MATERIALS (2022)

Add to Collection

Article Chemistry, Physical

Influence of Framework n(Si)/n(Al) Ratio on the Nature of Cu Species in Cu-ZSM-5 for NH3-SCR-DeNOx

Magdalena Jablonska et al.

Summary: In this study, nanosized Cu-containing ZSM-5 catalysts with different n(Si)/n(Al) ratios ranging from 18.9 to 50.5 were prepared by ion-exchange. Physico-chemical characterization revealed that the nature and distribution of copper species are influenced by the molar ratio of framework T atoms. Spectroscopic analyses, including DR UV-Vis, TPR-H-2, EPR, and FT-IR, indicated that the amount of aggregated copper species increases with an increase in the framework n(Si)/n(Al) ratio. The activity of Cu-containing ZSM-5 in the NH3-SCR-DeNO(x) reaction significantly decreases when the n(Si)/n(Al) ratio is between 47.0 and 50.5 compared to other materials with n(Si)/n(Al) ratios of 18.9-19.6. The mechanism of the reaction was discussed based on 2D COS analysis of IR spectra and the catalytic properties of zeolites.

CHEMCATCHEM (2022)

Add to Collection

Review Chemistry, Multidisciplinary

Review of the application of Cu-containing SSZ-13 in NH3-SCR-DeNOx and NH3-SCO

Magdalena Jablonska

Summary: This review focuses on the progress of Cu-containing SSZ-13 catalyst in selective catalytic reduction of NOx and selective ammonia oxidation reactions, discussing the challenges in preparation methods, hydrothermal resistance, poisoning, and reaction mechanisms.

RSC ADVANCES (2022)

Add to Collection

Article Engineering, Chemical

N2O Formation during NH3-SCR over Different Zeolite Frameworks: Effect of Framework Structure, Copper Species, and Water

Joonsoo Han et al.

Summary: The study found that Cu/CHA has a framework structure that favors the formation of AN, thereby reducing the generation of N2O, but also leading to the release of N2O through AN decomposition. The addition of water inhibits the formation of AN and increases the selectivity for AN decomposition to NO2 instead of N2O.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

Add to Collection

Article Chemistry, Physical

Effect of zeolite topology on NH3-SCR activity and stability of Cu-exchanged zeolites

Karolina A. Tarach et al.

Summary: The study evaluated the catalytic activity and stability of Cu-exchanged zeolites in NH3-SCR reaction, showing that the reaction mechanism involves [Cu(OH)(NH3)2(NO)](+) intermediates and reduction of Cu(II) to Cu(I). The differentiated speciation of copper sites plays a crucial role in determining the catalytic activity and stability of the zeolitic catalysts.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Add to Collection

Article Chemistry, Applied

AgY zeolite as catalyst for the selective catalytic oxidation of NH3

Joaquin Martinez-Ortigosa et al.

Summary: Ag-exchanged Y zeolites were tested in the NH3-SCO reaction and deeply characterized before and after reaction. The most active centers for the reaction were found to be Ag-0 nanoparticles formed under reduction conditions. The presence of water in the reaction feed promoted the dispersion and oxidation of silver nanoparticles.

MICROPOROUS AND MESOPOROUS MATERIALS (2021)

Add to Collection

Article Chemistry, Physical

Effect of Textural Properties and Presence of Co-Cation on NH3-SCR Activity of Cu-Exchanged ZSM-5

Magdalena Jablonska et al.

Summary: Comparative studies on micro-/mesoporous Cu-containing zeolites ZSM-5 treated by NaOH, TPAOH, or NaOH/TPAOH revealed that Cu-ZSM-5 catalyst showed the highest activity. Co-cations promoted the formation of [Cu-O-Cu](2+) dimers binding strongly with NOx, with a desorption energy barrier of at least 80 kJ mol(-1).

CATALYSTS (2021)

Add to Collection

Article Chemistry, Multidisciplinary

Evolution of the pore and framework structure of NaY zeolite during alkali treatment and its effect on methanol oxidative carbonylation over a CuY catalyst

Lifei Yan et al.

JOURNAL OF CHEMICAL RESEARCH (2020)

Add to Collection

Article Chemistry, Physical

Nanosized Cu-SSZ-13 and Its Application in NH3-SCR

Ana Palcic et al.

CATALYSTS (2020)

Add to Collection

Article Chemistry, Multidisciplinary

Structure and Reactivity of Oxygen-Bridged Diamino Dicopper(II) Complexes in Cu-Ion-Exchanged Chabazite Catalyst for NH3-Mediated Selective Catalytic Reduction

Chiara Negri et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

Add to Collection

Article Chemistry, Physical

Spectroscopic Evidence of Efficient Generation of Dicopper Intermediate in Selective Catalytic Reduction of NO over Cu-Ion-Exchanged Zeolites

Akira Oda et al.

ACS CATALYSIS (2020)

Add to Collection

Article Chemistry, Multidisciplinary

Catalytic Performances of Cu/MCM-22 Zeolites with Different Cu Loadings in NH3-SCR

Jialing Chen et al.

NANOMATERIALS (2020)

Add to Collection

Article Chemistry, Multidisciplinary

High catalytic activity of CuY catalysts prepared by high temperature anhydrous interaction for the oxidative carbonylation of methanol

Yuchun Wang et al.

RSC ADVANCES (2020)

Add to Collection

Article Chemistry, Applied

Zeolite structure effects on Cu active center, SCR performance and stability of Cu-zeolite catalysts

Hao Wang et al.

CATALYSIS TODAY (2019)

Add to Collection

Article Chemistry, Physical

Dynamic CuII/CuI speciation in Cu-CHA catalysts by in situ Diffuse Reflectance UV-vis-NIR spectroscopy

Chiara Negri et al.

APPLIED CATALYSIS A-GENERAL (2019)

Add to Collection

Article Materials Science, Coatings & Films

Synthesis of nanoporous zeolite-Y and zeolite-Y/GO nanocomposite using polyelectrolyte functionalized graphene oxide

Aasif A. Dabbawala et al.

SURFACE & COATINGS TECHNOLOGY (2018)

Add to Collection

Article Chemistry, Physical

Controllable preparation of various crystal size and nature of intra-crystalline diffusion in Cu/SSZ-13 NH3-SCR catalysts

Jun Wang et al.

JOURNAL OF CATALYSIS (2018)

Add to Collection

Article Chemistry, Applied

Identification and Quantification of Copper Sites in Zeolites by Electron Paramagnetic Resonance Spectroscopy

Anita Godiksen et al.

TOPICS IN CATALYSIS (2017)

Add to Collection

Article Chemistry, Multidisciplinary

Selective Catalytic Reduction over Cu/SSZ-13: Linking Homo- and Heterogeneous Catalysis

Feng Gao et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Add to Collection

Article Multidisciplinary Sciences

Dynamic multinuclear sites formed by mobilized copper ions in NOx selective catalytic reduction

Christopher Paolucci et al.

SCIENCE (2017)

Add to Collection

Review Chemistry, Inorganic & Nuclear

K- and L-edge X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS) determination of differential orbital covalency (DOC) of transition metal sites

Michael L. Baker et al.

COORDINATION CHEMISTRY REVIEWS (2017)

Add to Collection

Article Chemistry, Physical

Sub-micron Cu/SSZ-13: Synthesis and application as selective catalytic reduction (SCR) catalysts

Sebastian Prodinger et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2017)

Add to Collection

Article Multidisciplinary Sciences

GIS-NaP1 zeolite microspheres as potential water adsorption material: Influence of initial silica concentration on adsorptive and physical/topological properties

Pankaj Sharma et al.

SCIENTIFIC REPORTS (2016)

Add to Collection

Article Chemistry, Multidisciplinary

Control of Na-EMT Zeolite Synthesis by Organic Additives

Veselina Georgieva et al.

CRYSTAL GROWTH & DESIGN (2015)

Add to Collection

Article Chemistry, Physical

Investigation of NO2 and NO interaction with an Fe-ZSM-5 catalyst by transient response methods and chemical trapping techniques

Maria Pia Ruggeri et al.

JOURNAL OF CATALYSIS (2015)

Add to Collection

Article Chemistry, Multidisciplinary

Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report)

Matthias Thommes et al.

PURE AND APPLIED CHEMISTRY (2015)

Add to Collection

Article Chemistry, Multidisciplinary

Revisiting the nature of Cu sites in the activated Cu-SSZ-13 catalyst for SCR reaction

E. Borfecchia et al.

CHEMICAL SCIENCE (2015)

Add to Collection

Article Chemistry, Physical

Coordination Environment of Copper Sites in Cu-CHA Zeolite Investigated by Electron Paramagnetic Resonance

Anita Godiksen et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2014)

Add to Collection

Article Chemistry, Physical

Interaction of NH3 with Cu-SSZ-13 Catalyst: A Complementary FTIR, XANES, and XES Study

Filippo Giordanino et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2014)

Add to Collection

Article Chemistry, Physical

Localization of the copper-containing component in the pore volume of zeolite ZSM-5

R. A. Shutilov et al.

KINETICS AND CATALYSIS (2014)

Add to Collection

Article Chemistry, Physical

Reaction Conditions of Methane-to-Methanol Conversion Affect the Structure of Active Copper Sites

Evalyn Mae C. Alayon et al.

ACS CATALYSIS (2014)

Add to Collection

Article Chemistry, Applied

Determination of the electronic and geometric structure of Cu sites during methane conversion over Cu-MOR with X-ray absorption spectroscopy

Evalyn Mae C. Alayon et al.

MICROPOROUS AND MESOPOROUS MATERIALS (2013)

Add to Collection

Article Chemistry, Physical

Synthesis and Evaluation of Cu-SAPO-34 Catalysts for Ammonia Selective Catalytic Reduction. 1. Aqueous Solution Ion Exchange

Feng Gao et al.

ACS CATALYSIS (2013)

Add to Collection

Article Chemistry, Physical

Effects of hydrothermal aging on NH3-SCR reaction over Cu/zeolites

Ja Hun Kwak et al.

JOURNAL OF CATALYSIS (2012)

Add to Collection

Article Chemistry, Analytical

Migration of Co2+ in zeolite CoY induced by water, ammonia and pyridine adsorption

Kinga Gora-Marek

VIBRATIONAL SPECTROSCOPY (2010)

Add to Collection

Article Chemistry, Multidisciplinary

Quantification and redox property of the oxygen-bridged Cu2+ dimers as the active sites for the NO decomposition over Cu-ZSM-5 catalysts

DK Lee

KOREAN JOURNAL OF CHEMICAL ENGINEERING (2004)

Add to Collection

Article Chemistry, Multidisciplinary

Bis(μ-oxo)dicopper in Cu-ZSM-5 and its role in the decomposition of NO:: A combined in situ XAFS, UV-Vis-Near-IR, and kinetic study

MH Groothaert et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2003)

Add to Collection

Article Chemistry, Physical

EPR study of copper-exchanged zeolites:: Effects of correlated g- and A-strain, Si/Al ratio, and parent zeolite

PJ Carl et al.

JOURNAL OF PHYSICAL CHEMISTRY B (2000)

Add to Collection

© Peeref 2019-2024. All rights reserved.