☆ 4.6 Article

Enhanced Catalytic Activity of Pd Supported on TiO2 Nanowire for the H2-SCR of NO x in the Presence of Oxygen

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2023)

Related references

Note: Only part of the references are listed.

Article Chemistry, Multidisciplinary

Nitrogen Fixation by an Arc Plasma at Elevated Pressure to Increase the Energy Efficiency and Production Rate of NOX

Ivan Tsonev et al.

Summary: Plasma-based nitrogen fixation is a promising alternative for fertilizer production, but factors like energy consumption and selectivity towards desired products hinder its applicability. This study investigated the use of rotating gliding arc plasma under elevated pressures, different gas flow rates, and composition, showing a significant increase in NOx production with low energy consumption (1.8 MJ/(mol N)), high production rate (69 g/h), and high selectivity (94%). This improvement is attributed to the enhanced thermal Zeldovich mechanism and increased NO oxidation rate due to elevated pressure.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2023)

Add to Collection

Article Chemistry, Physical

Silica modulated palladium catalyst with superior activity for the selective catalytic reduction of nitrogen oxides with hydrogen

Shaohua Xie et al.

Summary: A significant promotion effect of colloidal SiO2 on Pd/TiO2 catalyst for improving the activity and N2 selectivity in the selective catalytic reduction of NO with H2 (H2-SCR) was reported, both before and after hydrothermal aging. The SiO2 addition not only benefited the formation of more oxygen vacancies but also increased Pd dispersion and created rich Pd-SiO2 interfaces on Pd-SiO2/TiO2 catalyst. On the promoted Pd-SiO2/TiO2, the Pd-TiO2 interface could facilitate NO adsorption and activation, and the created Pd-SiO2 interface could benefit H2 adsorption and dissociation, thus contributing to its significantly improved H2-SCR activity.

APPLIED CATALYSIS B-ENVIRONMENTAL (2023)

Add to Collection

Article Environmental Sciences

Excellent activity and selectivity of Pd/ZSM-5 catalyst in the selective catalytic reduction of NOx by H2

Sei Moon et al.

Summary: Superior de-NOx activity and N2 selectivity were achieved by the Pd/ZSM-5 catalyst calcined at 750 degrees C in the H2-SCR process. The catalyst showed high resistance to CO and maintained >94% NOx conversion under 1000 ppm CO in the feed gas. The optimized calcination temperature resulted in high Pd dispersion and improved catalytic performance.

ENVIRONMENTAL RESEARCH (2023)

Add to Collection

Article Chemistry, Physical

Highly ordered mesoporous MnOx catalyst for the NH3-SCR of NOx at low temperatures

Shiyu Xu et al.

Summary: MnOx catalysts with 3D structure (Mn-HT) were prepared using KIT-6 as a template by the hard-template method, and their catalytic performance for the selective catalytic reduction of NOx by NH3 was investigated at low temperatures. It was found that the template KIT-6 prepared at different hydrothermal temperatures significantly affected the catalytic performance of Mn-HT catalysts. Among them, Mn-140 catalyst prepared using the template obtained at a hydrothermal temperature of 140 degrees C exhibited the highest catalytic performance. Characterizations showed that Mn-140 catalyst possessed high reducibility with abundant surface oxygen species and Mn4+ species. NH3-TPD and in situ DRIFTS demonstrated that there were more Lewis acid sites and Bronsted acid sites on the surface of Mn-140 catalyst, promoting the adsorption and activation of NH3 and efficiently reducing NOx mainly by the Eley-Rideal (E-R) mechanism, accompanied by the Langmuir-Hinshelwood (L-H) mechanism.

APPLIED CATALYSIS A-GENERAL (2023)

Add to Collection

Article Engineering, Environmental

Mechanistic investigation of the enhanced SO2 resistance of Co-modified MnOx catalyst for the selective catalytic reduction of NOx by NH3

Ruiyang Chen et al.

Summary: In this study, a novel MnCoOx sphere catalyst with high activity and remarkable SO2 tolerance was developed. The mechanism of SO2 poisoning of pure MnOx catalyst was revealed, and it was found that MnCoOx catalyst can maintain high catalytic performance in the presence of SO2.

CHEMICAL ENGINEERING JOURNAL (2023)

Add to Collection

Article Chemistry, Physical

Correlating Lewis acid activity to extra-framework aluminum species in zeolite Y introduced by Ion-exchange

Syeda R. Batool et al.

Summary: Lewis acidity was introduced into zeolite Y by ion-exchange, resulting in an increase in Lewis acid sites and improved catalytic activity.

JOURNAL OF CATALYSIS (2022)

Add to Collection

Article Chemistry, Physical

Al2O3 nanofibers prepared from aluminum Di(sec-butoxide)acetoacetic ester chelate exhibits high surface area and acidity

M. A. Rodriguez-Olguin et al.

Summary: In this study, Al2O3 nanofibers with different acidity and porosity were synthesized using electrospinning, and their properties were analyzed and experimentally validated. By comparing experimental and simulation results, important parameters for the desorption kinetics of adsorbed species were determined, and the potential application of these nanofiber structures in catalysis was predicted.

JOURNAL OF CATALYSIS (2022)

Add to Collection

Article Chemistry, Applied

Selective catalytic reduction of NOx by hydrogen over PtIr/TiO2 catalyst

Yiyang Zhang et al.

Summary: PtIr/TiO2 catalyst exhibits higher activity and wider temperature range in H2-SCR process. The optimum mass ratio of Pt/Ir is 1:1. Characterization of the catalyst reveals the presence of metallic Pt and Ir on PtIr/TiO2, as well as the formation of more active species.

CATALYSIS TODAY (2022)

Add to Collection

Article Chemistry, Multidisciplinary

Low-Cost CuX Catalyst from Blast Furnace Slag Waste for Low-Temperature NH3-SCR: Nature of Cu Active Sites and Influence of SO2/H2O

Lin Chen et al.

Summary: Cu-exchanged zeolite NaX catalysts showed excellent low-temperature selective catalytic reduction (SCR) activity, with nearly 100% NO conversion at about 175 degrees C. The presence of surface oxygen vacancies and isolated Cu2+ ions played crucial roles in the catalytic performance, while SO2 and H2O could decrease the catalyst's SCR activity.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2022)

Add to Collection

Article Chemistry, Physical

A novel flower-like MnCe/TiO2 catalyst with controlled morphology for low-temperature selective catalytic reduction of NO with NH3

Bo Qin et al.

Summary: A flower-like MnCe/TiO2 catalyst was synthesized via hydrothermal method and exhibited excellent SCR performance and resistance to SO2 and H2O. The catalyst possessed a larger surface area, higher Ce3+ and Mn4+ content, superior surface acidity and redox performance, which greatly improved the SCR performance.

APPLIED SURFACE SCIENCE (2022)

Add to Collection

Article Chemistry, Applied

Selective catalytic reduction of NOx by H2 over a novel Pd/FeTi catalyst

Yiyang Zhang et al.

Summary: The Pd/FeTi catalyst showed higher H-2-SCR activity compared to Pd/Ti and Pd/Fe catalysts, mainly due to the formation of FeTi solid solution and highly dispersed Pd on the support.

CATALYSIS TODAY (2021)

Add to Collection

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)

Add to Collection

Article Chemistry, Physical

CH4 Oxidation Activity in Pd and Pt-Pd Bimetallic Catalysts: Correlation with Surface PdOx Quantified from the DRIFTS Study

Eun Jeong Jang et al.

Summary: The amount of surface PdOx shows a linear correlation with CH4 oxidation activity in Pd-based catalysts, independent of electronic properties of Pd. Reoxidizing Pd/Al2O3 catalysts before CO adsorption DRIFTS data collection minimizes discrepancies between catalytically relevant phases and characterized surface composition, further emphasizing the relationship between surface PdOx and CH4 oxidation activity. The study indicates that surface PdOx plays a critical role in determining CH4 oxidation activity, providing valuable insights for the development of Pd-based catalysts with improved performance.

ACS CATALYSIS (2021)

Add to Collection

Article Chemistry, Physical

Understanding the promotional effect of 3d transition metals (Fe, Co, Cu) on Pd/TiO2 for H2-SCR

Zhun Hu et al.

Summary: The effects of adding 3d transition metal oxides to Pd/TiO2 catalysts on the selective catalytic reduction of NO were investigated. Fe and Co additions showed promotional effects, while Cu addition had a negative impact.

CATALYSIS SCIENCE & TECHNOLOGY (2021)

Add to Collection

Article Chemistry, Physical

Synergism between palladium and nickel on Pd-Ni/TiO2 for H-2-SCR: A transient DRIFTS study

Zhun Hu et al.

JOURNAL OF CATALYSIS (2020)

Add to Collection

Review Chemistry, Physical

Current Catalyst Technology of Selective Catalytic Reduction (SCR) for NOx Removal in South Korea

Hyo-Sik Kim et al.

CATALYSTS (2020)

Add to Collection

Article Engineering, Chemical

Engineering the Metal-Support Interaction on Pt/TiO2 Catalyst to Boost the H2-SCR of NOx

Zhiming Liu et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2020)

Add to Collection

Article Chemistry, Physical

Photothermal Conversion of CO2 with Tunable Selectivity Using Fe-Based Catalysts: From Oxide to Carbide

Chuqiao Song et al.

ACS CATALYSIS (2020)

Add to Collection

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)

Add to Collection

Article Chemistry, Applied

Promoting effect of Au on Pd/TiO2 catalyst for the selective catalytic reduction of NOx by H2

Kaijiao Duan et al.

CATALYSIS TODAY (2019)

Add to Collection

Article Chemistry, Analytical

Bimetal PdAu decorated SnO2 nanosheets based gas sensor with temperature-dependent dual selectivity for detecting formaldehyde and acetone

Gaojie Li et al.

SENSORS AND ACTUATORS B-CHEMICAL (2019)

Add to Collection

Article Chemistry, Applied

Selective catalytic reduction of NOx by H2 over Pd/TiO2 catalyst

Yiyang Zhang et al.

CHINESE JOURNAL OF CATALYSIS (2019)

Add to Collection

Article Chemistry, Multidisciplinary

Defect Effects on TiO2 Nanosheets: Stabilizing Single Atomic Site Au and Promoting Catalytic Properties

Jiawei Wan et al.

ADVANCED MATERIALS (2018)

Add to Collection

Article Engineering, Chemical

Morphology and Crystal-Plane Effects of CeO2 on TiO2/CeO2 Catalysts during NH3-SCR Reaction

Xiaojiang Yao et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2018)

Add to Collection

Article Chemistry, Multidisciplinary

Facile Synthesis of PtxNiy Catalyst Supported on Carbon for Low Temperature H2-SCR

Bao-sheng Tu et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2017)

Add to Collection

Article Chemistry, Multidisciplinary

Supported Pd nanoclusters with enhanced hydrogen spillover for NOx removal via H2-SCR: the elimination of volcano-type behaviour

Zhezhe Peng et al.

CHEMICAL COMMUNICATIONS (2017)

Add to Collection

Article Chemistry, Physical

Superior oxygen transfer ability of Pd/MnOx-CeO2 for enhanced low temperature CO oxidation activity

Chao Wang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2017)

Add to Collection

Review Chemistry, Physical

Recent advances in the selective catalytic reduction of NOx with NH3 on Cu-Chabazite catalysts

Jihui Wang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2017)

Add to Collection

Article Chemistry, Physical

Selective catalytic reduction of nitric oxide with hydrogen on supported Pd: Enhancement by hydrogen spillover

Lifeng Wang et al.

APPLIED CATALYSIS A-GENERAL (2016)

Add to Collection

Article Chemistry, Physical

Selective catalytic reduction of NOx with H2 over WO3 promoted Pt/TiO2 catalyst

Zhiming Liu et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2016)

Add to Collection

Article Engineering, Environmental

Highly efficient Pd-doped ferrite spinel catalysts for the selective catalytic reduction of NO with H2 at low temperature

Chaochao Xu et al.

CHEMICAL ENGINEERING JOURNAL (2016)

Add to Collection

Article Engineering, Environmental

WO3 promoted Mn-Zr mixed oxide catalyst for the selective catalytic reduction of NOx with NH3

Zhiming Liu et al.

CHEMICAL ENGINEERING JOURNAL (2016)

Add to Collection

Article Chemistry, Physical

Mn promoted Pd/TiO2-Al2O3 catalyst for the selective catalytic reduction of NOx by H2

Kaijiao Duan et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2015)

Add to Collection

Article Chemistry, Physical

Promoting effect of MoO3 on the NOx reduction by NH3 over CeO2/TiO2 catalyst studied with in situ DRIFTS

Zhiming Liu et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2014)

Add to Collection

Article Chemistry, Physical

Selective catalytic reduction of nitric oxide by hydrogen over Zn-ZSM-5 and Pd and Pd/Ru based catalysts

Lifeng Wang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2014)

Add to Collection

Article Chemistry, Physical

Selective Oxidation of Saturated Hydrocarbons Using Au-Pd Alloy Nanoparticles Supported on Metal-Organic Frameworks

Jilan Long et al.

ACS CATALYSIS (2013)

Add to Collection

Article Chemistry, Physical

Effects of support pre-calcination on the NOx storage and reduction performance of Pt-BaO/Al2O3 catalysts

Zhun Hu et al.

CATALYSIS SCIENCE & TECHNOLOGY (2013)

Add to Collection

Review Chemistry, Physical

A review of selective catalytic reduction of nitrogen oxides with hydrogen and carbon monoxide

Hideaki Hamada et al.

APPLIED CATALYSIS A-GENERAL (2012)

Add to Collection

Article Chemistry, Physical

NOx reduction by H2 on WOx/ZrO2-supported Pd catalysts under lean conditions

Melanie Leicht et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2012)

Add to Collection

Article Chemistry, Physical

NO selective reduction by hydrogen over bimetallic Pd-Ir/TiO2 catalyst

Jia Li et al.

CATALYSIS COMMUNICATIONS (2012)

Add to Collection

Review Chemistry, Multidisciplinary

Recent advances in the selective catalytic reduction of NOx by hydrogen in the presence of oxygen

Zhiming Liu et al.

ENERGY & ENVIRONMENTAL SCIENCE (2012)

Add to Collection

Article Chemistry, Physical

Effect of Fe/Co-ratio on the phase composition of Pd-integrated perovskites and its H2-SCR of NOx performance

G. C. Mondragon Rodriguez et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2010)

Add to Collection

Article Chemistry, Physical

Industrial H2-SCR of NO on a novel Pt/MgO-CeO2 catalyst

Costas N. Costa et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2007)

Add to Collection

Article Chemistry, Physical

Single-crystalline TiO2 nanorods: Highly active and easily recycled photocatalysts

Yuxiang Yu et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2007)

Add to Collection

Article Chemistry, Physical

Kinetics of the NO+H2 reaction over supported noble metal based catalysts:: Support effect on their adsorption properties

Fabien Dhainaut et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2007)

Add to Collection

Article Chemistry, Physical

Improvements in the N2 selectivity of Pt catalysts in the NO-H2-O2 reaction at low temperatures

T Nanba et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2003)

Add to Collection

© Peeref 2019-2024. All rights reserved.