Comparison of precursors for the synthesis of Cu-SSZ-39 zeolite catalysts for NH3-SCR reaction

Article Chemistry, Physical

Revealing the effect of crystal size on the high-temperature hydrothermal stability of Cu/SSZ-13 NH3-SCR catalysts

Huabo Liu et al.

Summary: It is revealed that increasing crystal size improves the long-term stability of Cu/SSZ-13 zeolites under high-temperature hydrothermal aging.

CATALYSIS SCIENCE & TECHNOLOGY (2023)

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Article Engineering, Environmental

Optimization of a NOx and VOC Cooperative Control Strategy Based on Clean Air Benefits

Dian Ding et al.

Summary: The serious ambient PM2.5 and O-3 pollution in China requires urgent and cost-effective control strategies. This study highlights the importance of reducing NOx emissions and synergistic VOC control for significant human health and crop production benefits. It also emphasizes the need for simultaneous VOC and NOx emission control in different seasons to combat PM2.5 and O-3 pollution effectively.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

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Article Engineering, Environmental

Understanding the influence of hydrothermal treatment on NH3-SCR of NOx activity over Cux-SSZ-16

Rui Li et al.

Summary: SSZ-16 zeolite with AFX topology was synthesized and exchanged with Cu to form Cu-x-SSZ-16 catalyst for NH3 selective catalytic reduction of NOx. The Cu-2.2-SSZ-16 catalyst showed good activity even after hydrothermal aging, indicating its potential for practical applications.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Physical

Highlights on Key Roles of Y on the Hydrothermal Stability at 900 °C of Cu/SSZ-39 for NH3-SCR

Qingjin Lin et al.

Summary: This study enhances the hydrothermal stability of Cu/SSZ-39 catalysts at high temperatures (>800 degrees C) by adding yttrium ions (Y3+), resulting in improved deNO(x) performance for NH3-SCR reaction.

ACS CATALYSIS (2022)

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Article Chemistry, Physical

Promotion of the performance of Cu-SSZ-13 for selective catalytic reduction of NOx by ammonia in the presence of SO2 during high temperature hydrothermal aging

Xin Yong et al.

Summary: The presence of SO2 during high temperature hydrothermal aging enhances the activity of Cu-SSZ-13 at 700 and 800 degrees C, without affecting framework Al. The interaction of Cu2+ with SO2 helps suppress Cu2+ aggregation into CuO, leading to higher activity at high temperatures.

JOURNAL OF CATALYSIS (2021)

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Article Chemistry, Physical

Unexpected increase in low-temperature NH3-SCR catalytic activity over Cu-SSZ-39 after hydrothermal aging

Jinpeng Du et al.

Summary: The study reveals that after hydrothermal aging, Cu-SSZ-39 showed a remarkable increase in low-temperature NH3-SCR catalytic activity, attributed to the transformation of Cu2+ ions into CuxOy species facilitating the production of nitrate species critical for the catalytic process.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Review Multidisciplinary Sciences

Selective catalytic reduction of NOx with NH3: opportunities and challenges of Cu-based small-pore zeolites

Yulong Shan et al.

Summary: This review article summarizes the major advances of Cu-SSZ-13 in the NH3-SCR reaction, including insights into the matching between SCR catalyst design principles and the characteristics of Cu2+-exchanged zeolitic catalysts. It proposes principles for designing zeolites with excellent performance and stability, while also addressing the challenges faced by Cu-based small-pore zeolites.

NATIONAL SCIENCE REVIEW (2021)

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Article Chemistry, Physical

Potassium-directed sustainable synthesis of new high silica small-pore zeolite with KFI structure (ZJM-7) as an efficient catalyst for NH3-SCR reaction

Shichao Han et al.

Summary: Inspired by high throughput calculations, a new high silica small pore zeolite with KFI structure (Si/Al > 5, designated as ZJM-7) was successfully prepared in the presence of K+. Interestingly, even after hydrothermal treatment at 850 degrees C for 12 h, Cu-ZJM-7 catalyst still shows excellent performance in the NH3-SCR reaction. The combination of sustainable synthesis and excellent catalytic properties of ZJM-7 zeolite might provide a good opportunity for developing highly efficient and low-cost SCR catalysts in the future.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Physical

Remarkable performance of selective catalytic reduction of NOx by ammonia over copper-exchanged SSZ-52 catalysts

Rui Li et al.

Summary: The low-temperature catalytic performance of Cu-ion-exchanged SSZ-52 catalysts for the NH3-SCR of NOx was investigated, with Cu-2.4-SSZ-52 showing the highest activity and stability even after hydrothermal aging at 750 degrees C. The unique structure and cages of SSZ-52 are responsible for its excellent catalytic performance.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Engineering, Environmental

Atomic layer deposition of silica to improve the high-temperature hydrothermal stability of Cu-SSZ-13 for NH3 SCR of NOx

Heyuan Tian et al.

Summary: Coating Cu-SSZ-13 with a stable SiO2 nanolayer using atomic layer deposition method effectively improves its high-temperature hydrothermal stability, preventing leaching of alumina without affecting the zeolite's pores and catalytic activity.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Chemistry, Physical

Fabrication of AEI-type aluminosilicate catalyst with sheet-like morphology for direct conversion of propene to butenes

Ryota Osuga et al.

Summary: The sheet-like AEI-type aluminosilicate zeolites synthesized by the CGI-assisted method showed improved catalytic performance in the direct conversion of propene to butenes compared to conventional samples. The sheet-like morphology enhanced molecular diffusivity and led to a higher selectivity for iso-butene. Additionally, the distribution of Bronsted acid sites could be controlled by increasing the external surface area from the sheet-like particles.

CATALYSIS SCIENCE & TECHNOLOGY (2021)

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Article Chemistry, Physical

Relationships between copper speciation and Bronsted acidity evolution over Cu-SSZ-13 during hydrothermal aging

Yue Ma et al.

APPLIED CATALYSIS A-GENERAL (2020)

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Article Chemistry, Physical

A comparative study of the activity and hydrothermal stability of Al-rich Cu-SSZ-39 and Cu-SSZ-13

Yulong Shan et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

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Article Chemistry, Physical

Precise control of post-treatment significantly increases hydrothermal stability of in-situ synthesized cu-zeolites for NH3-SCR reaction

Yulong Shan et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

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Article Engineering, Environmental

Insight into the SO2 poisoning mechanism for NOx removal by NH3-SCR over Cu/LTA and Cu/SSZ-13

Aiyong Wang et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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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)

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Article Engineering, Environmental

Grain size effect on the high-temperature hydrothermal stability of Cu/SAPO-34 catalysts for NH3-SCR

Haidi Xu et al.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2020)

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Article Chemistry, Physical

Understanding the high hydrothermal stability and NH3-SCR activity of the fast-synthesized ERI zeolite

Jie Zhu et al.

JOURNAL OF CATALYSIS (2020)

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Article Chemistry, Inorganic & Nuclear

Evolution of D6R units in the interzeolite transformation from FAU, MFI or *BEA into AEI: transfer or reassembly?

Juan Zhang et al.

INORGANIC CHEMISTRY FRONTIERS (2020)

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Article Chemistry, Physical

Effects of SO2 on Cu-SSZ-39 catalyst for the selective catalytic reduction of NOx with NH3

Jinpeng Du et al.

CATALYSIS SCIENCE & TECHNOLOGY (2020)

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Article Chemistry, Physical

Importance of controllable Al sites in CHA framework by crystallization pathways for NH3-SCR reaction

Juan Zhang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

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Article Engineering, Environmental

On-Board Sensor-Based NOx Emissions from Heavy-Duty Diesel Vehicles

Yi Tan et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2019)

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Article Chemistry, Physical

Using Transient FTIR Spectroscopy to Probe Active Sites and Reaction Intermediates for Selective Catalytic Reduction of NO on Cu/SSZ-13 Catalysts

Yani Zhang et al.

ACS CATALYSIS (2019)

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Article Nanoscience & Nanotechnology

Direct Synthesis of Aluminosilicate SSZ-39 Zeolite Using Colloidal Silica as a Starting Source

Hao Xu et al.

ACS APPLIED MATERIALS & INTERFACES (2019)

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Article Chemistry, Physical

Transformation synthesis of aluminosilicate SSZ-39 zeolite from ZSM-5 and beta zeolite

Hao Xu et al.

JOURNAL OF MATERIALS CHEMISTRY A (2019)

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Article Chemistry, Physical

The influence of Si/Al ratio on the catalytic property and hydrothermal stability of Cu-SSZ-13 catalysts for NH3-SCR

Chi Fan et al.

APPLIED CATALYSIS A-GENERAL (2018)

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Article Chemistry, Physical

New insights into Cu/SSZ-13 SCR catalyst acidity. Part I: Nature of acidic sites probed by NH3 titration

Jinyong Luo et al.

JOURNAL OF CATALYSIS (2017)

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Article Chemistry, Physical

Effect of the hydrothermal aging temperature and Cu/Al ratio on the hydrothermal stability of CuSSZ-13 catalysts for NH3-SCR

Shuai Han et al.

CATALYSIS SCIENCE & TECHNOLOGY (2017)

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Article Chemistry, Multidisciplinary

Fully Copper-Exchanged High-Silica LTA Zeolites as Unrivaled Hydrothermally Stable NH3-SCR Catalysts

Taekyung Ryu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2017)

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Article Chemistry, Multidisciplinary

Correlation between Cu ion migration behaviour and deNO(x) activity in Cu-SSZ-13 for the standard NH3-SCR reaction

A. M. Beale et al.

CHEMICAL COMMUNICATIONS (2016)

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Article Chemistry, Multidisciplinary

Catalysis in a Cage: Condition-Dependent Speciation and Dynamics of Exchanged Cu Cations in SSZ-13 Zeolites

Christopher Paolucci et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2016)

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Article Chemistry, Physical

Synthesis of High-Silica LTA and UFI Zeolites and NH3-SCR Performance of Their Copper-Exchanged Form

Donghui Jo et al.

ACS CATALYSIS (2016)

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Article Chemistry, Multidisciplinary

Efficient synthesis of the Cu-SSZ-39 catalyst for DeNOx applications

Nuria Martin et al.

CHEMICAL COMMUNICATIONS (2015)

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Review Chemistry, Multidisciplinary

Recent advances in automotive catalysis for NOx emission control by small-pore microporous materials

A. M. Beale et al.

CHEMICAL SOCIETY REVIEWS (2015)

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Article Chemistry, Physical

Influence of Organic Structure Directing Agent Isomer Distribution on the Synthesis of SSZ-39

Michiel Dusselier et al.

CHEMISTRY OF MATERIALS (2015)

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Article Chemistry, Physical

Synthesis of high-silica AEI zeolites with enhanced thermal stability by hydrothermal conversion of FAU zeolites, and their activity in the selective catalytic reduction of NOx with NH3

Takushi Sonoda et al.

JOURNAL OF MATERIALS CHEMISTRY A (2015)

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Review Chemistry, Physical

Theoretical Investigation of NH3-SCR Processes over Zeolites: A Review

Yu Mao et al.

INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY (2015)

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Article Chemistry, Applied

NH3-SCR over Cu/SAPO-34 - Zeolite acidity and Cu structure changes as a function of Cu loading

Di Wang et al.

CATALYSIS TODAY (2014)

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Article Chemistry, Physical

Selective Catalytic Reduction of NOx with NH3 over a Cu-SSZ-13 Catalyst Prepared by a Solid-State Ion-Exchange Method

Di Wang et al.

CHEMCATCHEM (2014)

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Article Chemistry, Physical

Hydrothermal stability of CuSSZ13 for reducing NOx by NH3

Young Jin Kim et al.

JOURNAL OF CATALYSIS (2014)

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Article Chemistry, Physical

Structure-activity relationships in NH3-SCR over Cu-SSZ-13 as probed by reaction kinetics and EPR studies

Feng Gao et al.

JOURNAL OF CATALYSIS (2013)

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Article Chemistry, Physical

In Situ-DRIFTS Study of Selective Catalytic Reduction of NOx by NH3 over Cu-Exchanged SAPO-34

Di Wang et al.

ACS CATALYSIS (2013)

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Article Chemistry, Multidisciplinary

Two different cationic positions in Cu-SSZ-13?

Ja Hun Kwak et al.

CHEMICAL COMMUNICATIONS (2012)

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Article Chemistry, Multidisciplinary

Cu-SSZ-39, an active and hydrothermally stable catalyst for the selective catalytic reduction of NOx

Manuel Moliner et al.

CHEMICAL COMMUNICATIONS (2012)

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Article Engineering, Environmental

Ce-Ti Amorphous Oxides for Selective Catalytic Reduction of NO with NH3: Confirmation of Ce-O-Ti Active Sites

Ping Li et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2012)

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Article Chemistry, Physical

The ammonia selective catalytic reduction activity of copper-exchanged small-pore zeolites

Dustin W. Fickel et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2011)

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Article Chemistry, Physical

Excellent activity and selectivity of Cu-SSZ-13 in the selective catalytic reduction of NOx with NH3

Ja Hun Kwak et al.

JOURNAL OF CATALYSIS (2010)

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Article Chemistry, Physical

Copper Coordination in Cu-SSZ-13 and Cu-SSZ-16 Investigated by Variable-Temperature XRD

Dustin W. Fickel et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2010)

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Comparison of precursors for the synthesis of Cu-SSZ-39 zeolite catalysts for NH3-SCR reaction

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