Characteristics of Methane Conversion under Combined Reactions of Solid Catalyst with Microwave Plasma

Kobayashi, Mariko; Yamaguchi, Tatsuaki; Kimuro, Harumi; Onoe, Kaoru

doi:10.1252/jcej.39.314

Cited by 7 publications

(9 citation statements)

References 14 publications

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“…Therefore, this study underscores the significance of the plasma-catalyst configuration and its impact on product distribution in microwave-assisted CH 4 conversion. 259 A more recent study involving microwave irradiation was conducted by Julian et al 260 focusing on the nonoxidative conversion of CH 4 using a Mo/H-ZSM-5 catalyst. Specifically, a Mo/H-ZSM-5 catalyst was coated onto a silicon carbide (SiC) monolith, demonstrating stable operation for 19 h at a reaction temperature of 700 °C.…”

Section: Microwave (Mw)mentioning

confidence: 99%

“…Nagazoe et al conducted a study on CH 4 dissociation using microwave irradiation with a Pt/Al 2 O 3 catalyst positioned downstream of the microwave plasma zone. The microwave irradiation of CH 4 predominantly produced acetylene and H 2 as products; however, the presence of the Pt/Al 2 O 3 catalyst promoted hydrogenation pathways, leading to the formation of ethylene . The research revealed that as the distance between the microwave plasma zone and the catalyst bed increased, the ethylene yield decreased.…”

Section: Plasma Catalysis For Hydrogen Generationmentioning

confidence: 99%

“…The primary benefits of microwave discharges include their ease of igniting plasma, flexibility in operating pressure, capacity to process large volume of gases, and the avoidance of gas phase contamination from electrode erosion debris . Nagazoe et al conducted a study on CH 4 dissociation using microwave irradiation with a Pt/Al 2 O 3 catalyst positioned downstream of the microwave plasma zone. The microwave irradiation of CH 4 predominantly produced acetylene and H 2 as products; however, the presence of the Pt/Al 2 O 3 catalyst promoted hydrogenation pathways, leading to the formation of ethylene .…”

Section: Plasma Catalysis For Hydrogen Generationmentioning

confidence: 99%

See 2 more Smart Citations

Plasma Catalysis for Hydrogen Production: A Bright Future for Decarbonization

Wang,

Otor,

Rivera-Castro

et al. 2024

ACS Catal.

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Thermal approaches have played a dominant role in driving chemical reactions within the chemicals and fuels industries, benefiting from ongoing enhancements in efficiency via heat integration, catalyst development, and process intensification. Nevertheless, these traditional thermal approaches remain heavily reliant on fossil fuels, and there exists an urgent demand for the implementation of renewable energy technologies to synthesize fuels, commodity chemicals, and specialty chemicals. Nonthermal plasmas have gained considerable attention in recent years as a promising solution, and the prospects of combining plasmas with suitable catalysts have become even more appealing. Moreover, the evolution of nonthermal plasma catalysis approaches for the generation of clean hydrogen could be transformative in reducing greenhouse gas emissions. This comprehensive review highlights the influential contributions in plasma catalysis for hydrogen production, discusses recent advancements, and provides future prospects for researchers aiming to advance the production of clean hydrogen.

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Section: Microwave (Mw)mentioning

confidence: 99%

Section: Plasma Catalysis For Hydrogen Generationmentioning

confidence: 99%

Section: Plasma Catalysis For Hydrogen Generationmentioning

confidence: 99%

See 1 more Smart Citation

Plasma Catalysis for Hydrogen Production: A Bright Future for Decarbonization

Wang,

Otor,

Rivera-Castro

et al. 2024

ACS Catal.

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“…The output power in the experiment is 300 W with a frequency of 2.45 GHz. Pt/Al 2 O 3 is used as plasma catalyst to catalyze methane conversion (Nagazon and Yamaguchi, 2006). The result showed that the yields of ethylene and ethane have an increase on the condition of microwave irradiation.…”

Section: The Microwave Plasmamentioning

confidence: 99%

The Advances in the Special Microwave Effects of the Heterogeneous Catalytic Reactions

Zhang

Pang

et al. 2020

Front. Chem.

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In the present, microwave field has been widely used in chemical processes as an important means of intensification. The heterogeneous catalysts coupling with microwave has been shown to have many advantages, such as high catalytic performance and stability. Our objective is to focus an up-to-date overview concerning the advances in the special microwave effects of the heterogeneous catalytic reactions including special thermal effect, microwave plasma, enhanced active groups, and the flexibility of structure. This review systematically states the action mechanism and some practical application of microwave-induced catalytic process. Finally, the potential research directions in the field of microwave-induced catalysis are prospected.

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“…Luche et al (2009) reported on the influence of reaction conditions-specifically, methane concentration and mass flow rate-on syngas production by oxidation of methane in non-thermal plasma. Nagazoe et al (2006) studied the catalytic reaction of activated species formed in microwave plasma over Pt/Al 2 O 3 fixed in a non-plasma field, and succeeded in the selective synthesis of acetylene or ethylene from methane. Li et al (2004) compared the energy efficiencies of methane conversion for four discharge systems, and reported that higher methane conversion and acetylene yield were obtained by spark discharge.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sound Wave Irradiation on Methane Conversion in DC Pulse Discharge Plasma

Okada¹,

Nakane²,

Furukawa³

et al. 2009

Chemical Product and Process Modeling

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The effects of sound wave irradiation were investigated on the efficiency of chemical reaction and product distribution in plasma field generated by DC pulse discharge. Since the discharge plasma provides high energy locally, various chemical reactions ungoverned by thermodynamics can occur. However, the discharge space is extremely confined, which restricts the conversion of feed gas. In this work, the combination of discharge plasma and sound wave irradiation, which increases the vibration motion of the medium particle, was studied. An expansion of streamer into a fan-shape was observed with the irradiation of sound wave. The expansion of the discharge space was positively correlated with the vibration speed of the medium particle (V s ). Accordingly, the effects of sound wave irradiation on the methane conversion (X CH4 ) were evaluated. When methane diluted in argon (mole fraction of methane was 0.1) was used as the feed gas, methane conversion increased with V s , and X CH4 at 3.0 m/s of V s increased to approximately twice that for no sound wave irradiation. This increase in X CH4 resulted from the improvement in the reaction probability due to expansion of the discharge field and change of discharge properties. On the other hand, hydrogen formation and oily and deposit compounds formation were slightly increased. Therefore the enhancement of reaction efficiency and the possibility of product-control of plasma reaction by sound wave combined process were suggested.

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Characteristics of Methane Conversion under Combined Reactions of Solid Catalyst with Microwave Plasma

Cited by 7 publications

References 14 publications

Plasma Catalysis for Hydrogen Production: A Bright Future for Decarbonization

Plasma Catalysis for Hydrogen Production: A Bright Future for Decarbonization

The Advances in the Special Microwave Effects of the Heterogeneous Catalytic Reactions

Effect of Sound Wave Irradiation on Methane Conversion in DC Pulse Discharge Plasma

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