Metallic-substrate-supported manganese oxide as Joule-heat-ignition catalytic reactor for removal of carbon monoxide and toluene in air

Li, Jinjun; Lü, Xiaofei; Wu, Feng; Qin, Shaoli; You, Zhixiong

doi:10.1016/j.cej.2017.07.128

Cited by 25 publications

(21 citation statements)

References 45 publications

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“…The spiral was then subjected to ultrasonic cleaning for 30 min, resulting in the parent alloy substrate denoted as FeCrAl-par. Individual spirals of the parent alloy were further pretreated by either calcination in air or anodization, as reported recently, 27 giving substrates denoted as FeCrAl-cal and FeCrAl-anod, respectively. The calcination was conducted in a muffle furnace at 500 °C for 2 h. The anodization process was conducted in a 500 mL glass beaker containing 250 mL of sulfuric acid (10 wt %) as the electrolyte solution under a voltage of 5 V for 30 min.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, we reported a Joule-heat-ignition reactor for catalytic oxidation of VOCs 27 that was based on the use of metal substrate-supported manganese oxide catalysts and the passage electric currents through the substrate to generate Joule heat for the ignition of VOC oxidation. The heat was generated inside the substrate and controlled by adjusting the input power, which could allow effective heat transfer, flexible temperature control and rapid ignition of reactions.…”

Section: Introductionmentioning

confidence: 99%

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Electroplated Palladium Catalysts on FeCrAlloy for Joule-Heat-Ignited Catalytic Elimination of Ethylene in Air

Lü

et al. 2017

Ind. Eng. Chem. Res.

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Palladium catalysts were electroplated onto Fe–Cr–Al alloy to build Joule-heat-ignition catalytic reactors for the complete oxidation of ethylene. The catalytic process involved directly passing electric currents through the alloy substrates to generate Joule heat, leading to a temperature increase in the supported catalysts and hydrocarbon ignition. The effects of alloy pretreatment and alumina washcoating on the Joule-heat-ignited catalytic performance were studied. The electroplated palladium catalyst supported on a calcined substrate exhibited better performance than that supported on either an anodized substrate or an untreated one, which can be attributed to the oxygen species generated in the interface between the palladium particles and the protruding oxide particles on the calcined substrate. Washcoating of the anodized substrate with alumina prior to electroplating with palladium improved the catalytic activity, which could also be due to the presence of palladium–alumina interfaces. The facile electroplating method and the Joule-heat-ignition catalytic system can be applied in catalytic processes using metallic monoliths as substrates.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electroplated Palladium Catalysts on FeCrAlloy for Joule-Heat-Ignited Catalytic Elimination of Ethylene in Air

Lü

et al. 2017

Ind. Eng. Chem. Res.

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“…7 SEM images of the pristine ( a ), pretreated alloys ( b-c ) and the supported manganese oxide catalysts ( d-e ): FeCrAl-calcination ( b , d ), FeCrAl-anodized ( c,e ). Surface metal contents of the alloy-based catalysts ( f ) (Li et al, 2017b ) …”

Section: Preparation Of Stainless Steel Catalystmentioning

confidence: 99%

“…Compared to calcination, anodic oxidation results in a much rougher and porous surface, while it takes less time and energy. Changes in the surface morphology of FeCrAl alloys after anodic oxidation and calcination were given by Li et al ( 2017b ). It can be seen that the calcination leads to protruded particles on the metal surface, while the anodized sample shows channels with diameter of 1 ~ 4 μm, which provide additional surface for the deposition of the catalytic phase (Fig.…”

Section: Preparation Of Stainless Steel Catalystmentioning

confidence: 99%

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Stainless steel catalyst for air pollution control: structure, properties, and activity

Wang

Zhao

Tang

et al. 2022

Environ Sci Pollut Res

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With the awakening of environmental awareness, the importance of air quality to human health and the proper functioning of social mechanisms is becoming increasingly prominent. The low cost and high efficiency of catalytic technique makes it a natural choice for achieving deep air purification. Stainless steel alloys have demonstrated their full potential for application in a variety of catalytic fields. The diversity of 3D networks or fibrous structures increases the turbulence within the heterogeneous catalysis, balance the temperature distribution in the reaction bed and, in combination with a highly thermally conductive skeleton, avoid agglomeration and deactivation of the active components; corrosion resistance and thermal stability are adapted to highly endothermic/exothermic or corrosive reaction environments; oxide layers formed by bulk transition metals activated by thermal treatment or etching can significantly alter the physico-chemical properties between the substrate and active species, further improving the stability of stainless steel catalysts; suitable electronic conductivity can be applied to the electrothermal catalysis, which is expected to provide guidance for the reduction of intermittent emission exhausts and the storage of renewable energy. The current applications of stainless steel as catalyst or support in the air purification have covered soot particle capture and combustion, catalytic oxidation of VOCs, SCR, and air sterilization. This paper summarizes several preparation methods and presents the relationships between the preparation process and the activity, and reviews its application and the current status of research in atmospheric environmental management, proposing the advantages and challenges of the stainless steel-based catalysts.

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Recent Advances of Monolithic Metal Mesh‐Based Catalysts for CO Oxidation

Yang,

Li,

Liu

2024

ChemCatChem

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This review systematically evaluates the research and applications of metal mesh‐based catalysts for CO oxidation. CO is a hazardous gas that affects human health and the environment. Traditional cordierite‐based catalysts have drawbacks such as complex preparation, high costs, poor stability, and limited catalytic activity, necessitating exploration of alternative solutions. Monolithic metal mesh‐based catalysts, using metal substrates like Ti, Cu, Fe, FeCrAl, stainless steel, Al and Ni, could address these problems effectively. Generally, each metal mesh requires specific pretreatments to roughen surface and facilitate the loading of active species. Plasma electrolytic oxidation is particularly effective for Ti and Al mesh. This results in a monolithic metal mesh‐based catalyst with uniform surface distribution and fully exposed active species. The review also summarizes in‐situ preparation strategies for metal mesh‐based catalysts and their progress in CO oxidation. Finally, the development potential of metal mesh‐based catalysts is discussed, emphasizing the significant challenges and future prospects for industrial applications.

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Metallic-substrate-supported manganese oxide as Joule-heat-ignition catalytic reactor for removal of carbon monoxide and toluene in air

Cited by 25 publications

References 45 publications

Electroplated Palladium Catalysts on FeCrAlloy for Joule-Heat-Ignited Catalytic Elimination of Ethylene in Air

Electroplated Palladium Catalysts on FeCrAlloy for Joule-Heat-Ignited Catalytic Elimination of Ethylene in Air

Stainless steel catalyst for air pollution control: structure, properties, and activity

Recent Advances of Monolithic Metal Mesh‐Based Catalysts for CO Oxidation

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