A Review on Preparation of Palladium Oxide Films DOI Open Access
P. Badica, Á. Lőrinczi

Coatings, Journal Year: 2024, Volume and Issue: 14(10), P. 1260 - 1260

Published: Oct. 1, 2024

Fabrication aspects of PdO thin films and coatings are reviewed here. The work provides organizes the up-to-date information on methods to obtain films. In recent years, interest in Pd oxide for different applications has increased. Since can be converted into PdO, it is instructive pay attention preparation pure alloyed films, heterostructures, nanoparticles synthesized substrates. development presented from early reports coatings’ formation by oxidation foils wires present technologies. Modern synthesis/growth routes gathered chemical physical categories. Chemical include hydrothermal, electrochemical, electroless deposition, coating methods, such as impregnation, precipitation, screen printing, ink jet spin or dip coating, vapor deposition (CVD), atomic layer (ALD), while ones sputtering cathodic arc laser ablation, ion electron beam-induced evaporation, supersonic cluster beam deposition. Analysis publications indicates that many as-deposited Pd-oxide granular, with a high variety morphologies properties targeting very applications, they grown We note comparative assessment challenges quality among specific application generally missing and, some cases, difficult make distinction between film randomly oriented, powder-like (granular), compact material. Textured epitaxial rare if orientation observed, most obtained accidentally. Some practical details toward issues concerning also presented.

Language: Английский

Enhanced Nitrous Oxide Decomposition on Zirconium-Supported Rhodium Catalysts by Iridium Augmentation DOI
Ningqiang Zhang, Chenxi He, Yuan Jing

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

The effective elimination of N2O from automobile exhaust at low temperatures poses significant challenges. Compared to other materials, supported RhOx catalysts exhibit high decomposition activities, even in the presence O2, CO2, and H2O. Metal additives can enhance low-temperature activities over catalysts; however, enhancement mechanism active sites require further investigation. In this study, we demonstrate activity a monoclinic ZrO2-supported Rh catalyst [Rh(1)/ZrO2] with Ir addition + O2 CO2 promotional effect on Rh(1)–Ir(1)/ZrO2 (Rh = 1 wt % %) were investigated by kinetic studies situ spectroscopic methods, including X-ray absorption spectroscopy, ambient-pressure photoelectron ultraviolet–visible spectroscopy. These results indicate that both surface species for catalytic temperatures, augmentation promoted desorption gaseous which are regarded as key steps decomposition.

Language: Английский

Citations

6
Direct Syngas-To-Ethanol Conversion over Lithium-Promoted Rh/MgO Catalysts DOI
Abdellah Ait El Fakir, Pengfei Du, Wan Li

et al.

ACS Catalysis, Journal Year: 2025, Volume and Issue: 15(3), P. 2033 - 2044

Published: Jan. 21, 2025

Significant efforts have been dedicated to the direct syngas conversion into ethanol, however, achieving a high ethanol yield remains formidable task. In this study, we present syngas-to-ethanol over Li-promoted RhOx/MgO catalyst (RhOx/Li2O/MgO). The space-time (EtOH STY) and selectivity reached 12.2 mmol gcat–1 h–1 20%, respectively, at 35% CO RhOx/Li2O/MgO catalyst. demonstrated superior performance in terms of both STY compared Rh/Li2O catalysts on other support materials Rh/MgO promoted with alkali metals. situ/operando spectroscopic techniques, combined characterisations theoretical calculations, elucidated interactions between Li2O Rh MgO surface. These promote formation new active sites weaken adsorption surface, thereby enhancing production. This work provides promising strategy for improving processes.

Language: Английский

Citations

1
A review of chemical kinetic mechanisms and after-treatment of amino fuel combustion DOI
Wei Zhang, Shuai Chen, Zhaohui Chen

et al.

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 959, P. 178220 - 178220

Published: Jan. 1, 2025

Language: Английский

Citations

0
Extrapolative-machine-learning-guided discovery of multi-elemental heterogeneous catalysts for low-temperature NO reduction by H2 DOI Creative Commons
Yuan Jing, Chenyang Zhang,

Mine Shinya

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Abstract Selective catalytic reduction of NOx with hydrogen (H2-SCR) in the presence oxygen is an environmentally friendly and sustainable emission control technology that has attracted considerable attention. However, even most promising currently available catalysts are not sufficiently active to effectively promote this reaction, particularly at low temperatures (< 150°C). Therefore, there urgent need for development highly H2-SCR catalysts. Although data-science approaches, including machine learning (ML), have been suggested accelerate such important processes, discovery unique using ML remains limited. This limitation stems from a common criticism ML, namely, its perceived inability extrapolate identify extraordinary materials. Herein, we present extrapolative approach new multi-elemental Starting 45 as initial dataset, employed closed-loop system combined predictions experimental validation over 24 iterative cycles. process enabled testing 425 catalysts, ultimate identification several superior activity (average N₂ yield, %) previously reported high-performance temperature range 50–150°C. The optimal catalyst was found be Pt(1.3)-Ir(0.2)/Ba(1.5)-Co(1)/H-ZSM-5(11). Notably, Co absent original composition could predicted by human experts.

Language: Английский

Citations

0
Identification of active sites and mechanism of CO2 methanation over Ni/CeO2 catalysts DOI
Zhaorui Zhang, Zhaohui Li, Xiao Han

et al.

Journal of Rare Earths, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

Citations

0
Reductive decomposition of nitrous oxide with hydrogen at room temperature over iridium nanoparticles highly dispersed on silica DOI

Kana Sato,

Sora Momma,

Young‐Wook Song

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(3), P. 116922 - 116922

Published: May 5, 2025

Language: Английский

Citations

0
Effect of thermal and hydrothermal aging treatments on Fe-Based Zeolite Catalysts for N2O decomposition in Ammonia-Fueled Engines DOI
Anqi Li, Pan Wang, Tong Yan

et al.

Aerospace Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 110394 - 110394

Published: June 1, 2025

Language: Английский

Citations

0
Continuous N2O Capture and Reduction to N2 Using Ca-Zeolite Adsorbent and Pd/La/Al2O3 Reduction Catalyst DOI
Yuan Jing, Chenxi He, Wan Li

et al.

ACS ES&T Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 19, 2024

Language: Английский

Citations

1
A Review on Preparation of Palladium Oxide Films DOI Open Access
P. Badica, Á. Lőrinczi

Coatings, Journal Year: 2024, Volume and Issue: 14(10), P. 1260 - 1260

Published: Oct. 1, 2024

Fabrication aspects of PdO thin films and coatings are reviewed here. The work provides organizes the up-to-date information on methods to obtain films. In recent years, interest in Pd oxide for different applications has increased. Since can be converted into PdO, it is instructive pay attention preparation pure alloyed films, heterostructures, nanoparticles synthesized substrates. development presented from early reports coatings’ formation by oxidation foils wires present technologies. Modern synthesis/growth routes gathered chemical physical categories. Chemical include hydrothermal, electrochemical, electroless deposition, coating methods, such as impregnation, precipitation, screen printing, ink jet spin or dip coating, vapor deposition (CVD), atomic layer (ALD), while ones sputtering cathodic arc laser ablation, ion electron beam-induced evaporation, supersonic cluster beam deposition. Analysis publications indicates that many as-deposited Pd-oxide granular, with a high variety morphologies properties targeting very applications, they grown We note comparative assessment challenges quality among specific application generally missing and, some cases, difficult make distinction between film randomly oriented, powder-like (granular), compact material. Textured epitaxial rare if orientation observed, most obtained accidentally. Some practical details toward issues concerning also presented.

Language: Английский

Citations

0