Ozone-assisted diesel soot combustion over Mn2O3 catalysts: A tandem work of different reactive phases

Article Thermodynamics

Boosting diesel soot catalytic combustion via enhancement of solid(catalyst)-solid(soot) contact by tailoring micrometer scaled sheet-type agglomerations of CeO2-ZrO2 catalyst

Zhengzheng Yang et al.

Summary: A micrometer scaled sheet-type CeO2-ZrO2 catalyst has been developed to improve catalytic diesel soot combustion performance by enhancing solid(catalyst)-solid(soot) contact efficiency.

COMBUSTION AND FLAME (2022)

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Article Chemistry, Physical

Highly reactive and thermally stable Ag/YSZ catalysts with macroporous fiber-like morphology for soot combustion

Hanying Liang et al.

Summary: A hierarchical Ag/YSZ catalyst with macroporous fiber-like morphology was synthesized, showing significantly improved accessibility for soot combustion. The re-dispersed fine Ag nanoparticles after ageing treatments led to abundant electrophilic O- species, resulting in enhanced soot elimination efficiency in a loose contact mode, offering a new opportunity for improving catalyzed gasoline particulate filters.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Physical

Ag-doped manganese oxide catalyst for gasoline particulate filters: Effect of crystal phase on soot oxidation activity

Min June Kim et al.

Summary: The manganese oxide catalysts were synthesized using a hydrothermal method with the addition of silver to enhance active oxygen generation. In experiments under GPF conditions, Mn2O3 showed higher soot oxidation activity compared to cryptomelane due to its better regeneration of active oxygen. This study unveiled the main factor contributing to the soot oxidation activity of manganese oxide, providing insights for further research in this field.

APPLIED SURFACE SCIENCE (2021)

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Article Chemistry, Multidisciplinary

Insights into the Reactive and Deactivation Mechanisms of Manganese Oxides for Ozone Elimination: The Roles of Surface Oxygen Species

Lei Zhang et al.

Summary: Manganese oxides with varied Mn valence states but identical morphologies were successfully synthesized using a simple thermal treatment method. Among them, MnO2-H-200 showed superior ozone decomposition capacity, which was strongly associated with abundant oxygen vacancies on its surface. By combining various characterization techniques, the different O3 decomposition efficiencies among Mn3O4, Mn2O3, and MnO2 were found to be dependent on the nature of oxygen vacancies present.

LANGMUIR (2021)

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Article Chemistry, Applied

Research advances of rare earth catalysts for catalytic purification of vehicle exhausts - Commemorating the 100th anniversary of the birth of Academician Guangxian Xu

Lanyi Wang et al.

Summary: The article summarizes the increasingly prominent issue of air pollution, with vehicle exhaust emissions becoming a major source of pollution, and rare earth catalysts becoming an important choice for vehicle exhaust purification due to their unique properties. It also describes the current status, application, and role of rare earth catalysts in different vehicle exhausts, and proposes future directions for development.

JOURNAL OF RARE EARTHS (2021)

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Article Chemistry, Physical

Decreasing the catalytic ignition temperature of diesel soot using electrified conductive oxide catalysts

Xueyi Mei et al.

Summary: Researchers have successfully decreased the ignition temperature of soot combustion through an electrification strategy, leading to efficient combustion at low temperatures and improving catalyst efficiency. This method shows promising potential for reducing vehicle emissions at low exhaust temperatures.

NATURE CATALYSIS (2021)

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Article Engineering, Chemical

Synergy of NTP-La1-xAgxMn1-yCoyO3-δ Hybrid for Soot Catalytic Combustion at Low Temperature

Shixin Liu et al.

Summary: Ag and Co co-doped La1-xAgxMn1-yCoyO3-delta perovskites were prepared using the citric acid sol-gel method. When combined with non-thermal plasma (NTP), the efficiency of soot removal from diesel exhaust gas was significantly improved, with the hybrid La0.5Ag0.5Mn0.8Co0.2O3-delta showing the highest performance. The synergistic catalytic effect of NTP and La1-xAgxMn1-yCoyO3-delta was attributed to the coordination of short-living species in plasma, adsorbed oxygen, and Ag nanoparticles on the material surface.

PLASMA CHEMISTRY AND PLASMA PROCESSING (2021)

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Article Chemistry, Physical

Investigation of the ozone-induced oxidation of soot over LaMnO3 catalyst using O3/O2 temperature-programmed desorption experiments

Tae Uk Park et al.

Summary: This study investigated the catalytic redox cycle occurring on the surface of a lanthanum manganese oxide catalyst, with superoxide ions combined with Mn4+ ions playing a key role in promoting ozone-induced soot oxidation. The redox cycle involved the migration of superoxide ions over surface Mn4+ sites and the Mn4+-to-Mn3+ transition to complete the cycle of oxidation. Evidence suggested that the redox cycle exclusively occurred on the catalyst's surface.

REACTION KINETICS MECHANISMS AND CATALYSIS (2021)

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Article Chemistry, Physical

Hierarchical Porous K-OMS-2/3DOM-m Ti0.7Si0.3O2 Catalysts for Soot Combustion: Easy Preparation, High Catalytic Activity, and Good Resistance to H2O and SO2

Xuehua Yu et al.

Summary: Soot particles are a major source of air pollution, and catalytic combustion is an effective strategy for reducing them. The study successfully developed novel catalysts with high catalytic activity and stability.

ACS CATALYSIS (2021)

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Article Engineering, Environmental

Enhancement of Combustive Removal of Soot at Low Temperatures (∼ 150 °C) Using Ozone as an Oxidant and Potassium-Substituted Lanthanum Manganite as a Catalyst

Jin Soo Lee et al.

Summary: This study found that the oxidation of soot induced by ozone was greatly enhanced by using La1-xKxMnO3 as a catalyst in the temperature range of 100-150 degrees C. The degree of K-substitution had little influence on the catalytic activity of ozone-induced soot oxidation.

OZONE-SCIENCE & ENGINEERING (2021)

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Article Chemistry, Physical

Promoting soot combustion efficiency by strengthening the adsorption of NOx on the 3DOM mullite catalyst

Yongjie Chen et al.

JOURNAL OF CATALYSIS (2020)

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Article Chemistry, Physical

High-efficient non-noble metal catalysts of 3D ordered macroporous perovskite-type La2NiB'O6 for soot combustion: Insight into the synergistic effect of binary Ni and B' sites

Xuelei Mei et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

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Article Chemistry, Physical

A robust core-shell silver soot oxidation catalyst driven by Co3O4: Effect of tandem oxygen delivery and Co3O4-CeO2 synergy

Xin Wang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

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Article Chemistry, Physical

Facile synthesis of ceria-zirconia solid solutions with cubic-tetragonal interfaces and their enhanced catalytic performance in diesel soot oxidation

Zhengzheng Yang et al.

JOURNAL OF CATALYSIS (2019)

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Article Engineering, Environmental

Ozone activated Ag/CeO2 catalysts for soot combustion: The surface and structural influences

Meisheng Zhang et al.

CHEMICAL ENGINEERING JOURNAL (2019)

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Article Chemistry, Physical

Multiple strategies to decrease ignition temperature for soot combustion on ultrathin MnO2-x nanosheet array

Qiaolan Shi et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

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Article Engineering, Environmental

Tuning the K+ Concentration in the Tunnels of alpha-MnO2 To Increase the Content of Oxygen Vacancy for Ozone Elimination

Guoxiang Zhu et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2018)

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Article Chemistry, Physical

In situ DRIFTS study of O3 adsorption on CaO, γ-Al2O3, CuO, α-Fe2O3 and ZnO at room temperature for the catalytic ozonation of cinnamaldehyde

Jianfeng Wu et al.

APPLIED SURFACE SCIENCE (2017)

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Article Chemistry, Physical

Crystal facet-dependent reactivity of α-Mn2O3 microcrystalline catalyst for soot combustion

Li Cheng et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2017)

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Article Chemistry, Physical

Mesoporous manganese oxides for NO2 assisted catalytic soot oxidation

Niluka D. Wasalathanthri et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2017)

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Article Chemistry, Physical

Catalytic decomposition of gaseous ozone over manganese dioxides with different crystal structures

Jingbo Jia et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2016)

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Article Chemistry, Physical

XPS determination of Mn oxidation states in Mn (hydr)oxides

Eugene S. Ilton et al.

APPLIED SURFACE SCIENCE (2016)

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Article Chemistry, Physical

Roles of Acid Sites on Pt/H-ZSM5 Catalyst in Catalytic Oxidation of Diesel soot

Shuang Liu et al.

ACS CATALYSIS (2015)

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Article Chemistry, Physical

On the activity and stability of Pt-K/Al2O3 LNT catalysts for diesel soot and NOx abatement

R. Matarrese et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2014)

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Article Chemistry, Multidisciplinary

Low-temperature oxidation of particulate matter using ozone

Yoshihiko Itoh et al.

RSC ADVANCES (2014)

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Article Chemistry, Physical

Sulfation of Pt/Al2O3 catalyst for soot oxidation: High utilization of NO2 and oxidation of surface oxygenated complexes

Shuang Liu et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2013)

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Article Engineering, Multidisciplinary

Pilot-Scale Experiments of Continuous Regeneration of Ceramic Diesel Particulate Filter in Marine Diesel Engine Using Nonthermal Plasma-Induced Radicals

Takuya Kuwahara et al.

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS (2012)

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Article Chemistry, Physical

Potassium effect on the thermal stability and reactivity of NOx species adsorbed on Pt,Rh/La2O3 catalysts

B. S. Sanchez et al.

APPLIED CATALYSIS A-GENERAL (2011)

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Article Chemistry, Applied

Effect of soot on the storage-reduction performances of PtBa/Al2O3 LNT catalyst

N. Artioli et al.

CATALYSIS TODAY (2011)

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Article Engineering, Multidisciplinary

Continuous Regeneration of Ceramic Particulate Filter in Stationary Diesel Engine by Nonthermal-Plasma-Induced Ozone Injection

Masaaki Okubo et al.

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS (2009)

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Article Engineering, Chemical

Open issues in oxidative catalysis for diesel particulate abatement

Debora Fino et al.

POWDER TECHNOLOGY (2008)

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Article Chemistry, Inorganic & Nuclear

One-dimensional α-MnO2:: Trapping chemistry of tunnel structures, structural stability, and magnetic transitions

Liping Li et al.

JOURNAL OF SOLID STATE CHEMISTRY (2007)

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Article Chemistry, Physical

The heterogeneous reaction between soot and NO2 at elevated temperature

H Muckenhuber et al.

CARBON (2006)

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Article Chemistry, Physical

Diffuse reflectance FTIR study of the interaction of alumina surfaces with ozone and water vapor

JM Roscoe et al.

JOURNAL OF PHYSICAL CHEMISTRY A (2005)

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Article Chemistry, Physical

The role of NO2 and O2 in the accelerated combustion of soot in diesel exhaust gases

A Setiabudi et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2004)

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Article Chemistry, Physical

Effects of ozone on the catalytic combustion of carbon black

M Bokova et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2004)

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Article Engineering, Multidisciplinary

Regeneration of diesel particulate filter using nonthermal plasma without catalyst

M Okubo et al.

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS (2004)

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Article Chemistry, Physical

Infrared spectroscopy of carbon materials:: A quantum chemical study of model compounds

E Fuente et al.

JOURNAL OF PHYSICAL CHEMISTRY B (2003)

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Article Chemistry, Applied

Automotive catalytic converters: current status and some perspectives

J Kaspar et al.

CATALYSIS TODAY (2003)

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Article Chemistry, Physical

Electron transfer effects in ozone decomposition on supported manganese oxide

R Radhakrishnan et al.

JOURNAL OF PHYSICAL CHEMISTRY B (2001)

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Ozone-assisted diesel soot combustion over Mn2O3 catalysts: A tandem work of different reactive phases

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