Conversion mechanism of thermal plasma-enhanced CH4-CO2 reforming system to syngas under the non-catalytic conditions

Zhou, Yang; Chu, Ruizhi; Fan, Lulu; Zhao, Jianqiao; Li, Weisong; Jiang, Xiaofeng; Meng, Xiuxia; Li, Yusai; Wan, Yongzhou

doi:10.1016/j.scitotenv.2023.161453

Cited by 5 publications

(2 citation statements)

References 65 publications

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“…When the temperature drops below the point where continuing the reaction is no longer energetically advantageous, the concentration of reactants decreases, and the process repeats itself. In conclusion, radicals and other intermediates are produced during the high-temperature reaction of CO 2 and CH 4 , which then undergo further reactions to yield CO and H 2 [28]. The variation of the mass fraction of the chemical species produced from the CO 2 /CH 4 gas plasma mixture as a function of temperature is illustrated in Figure 3.…”

Section: Thermodynamic Studymentioning

confidence: 93%

Reduction of an Ilmenite Concentrate by Using a Novel CO2/CH4 Thermal Plasma Torch

El Khalloufi,

Soucy,

Lapointe

et al. 2024

Minerals

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Plasma technology has emerged as a very helpful tool in a variety of sectors, notably metallurgy. Innovators and scientists are focused on the problem of finding a more ecologically friendly way of extracting titanium and iron metal from natural ilmenite concentrate for industrial applications. A direct current (DC) plasma torch operating at atmospheric pressure is used in this study to describe a decarbonization process for reducing an ilmenite concentrate. The plasma gases employed in this torch are CO2 and CH4. The molar ratio of the gases may be crucial for achieving a satisfactory reduction of the ilmenite concentrate. As a result, two molar ratios for CO2/CH4 have been chosen: 1:1 and 2:1. During torch operation, a thin layer of graphite is formed on the cathode to establish a protective barrier, prolonging the cathode’s life. The material was analyzed using X-ray diffraction (XRD) and scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS). The output gases were analyzed using mass spectrometry (MS). In addition, a thermodynamic analysis was performed to predict the development of thermodynamically stable phases. An economic assessment (including capital expenditures (CAPEX) and operating expenditures (OPEX)) and a carbon balance were developed with the feasibility of the piloting in mind.

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Section: Thermodynamic Studymentioning

confidence: 93%

Reduction of an Ilmenite Concentrate by Using a Novel CO2/CH4 Thermal Plasma Torch

El Khalloufi,

Soucy,

Lapointe

et al. 2024

Minerals

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show abstract

“…This discovery provides a new perspective on the CRM reaction and advances our knowledge of how it converts when heated plasma is utilized to initiate it with no requirement for catalysis. [37].…”

Section: Catalytic Materials For Dry Methane Conversionmentioning

confidence: 99%

Materials Enabling Methane and Toluene Gas Treatment

Lv,

Wang

2024

Materials

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This paper summarizes the latest research results on materials for the treatment of methane, an important greenhouse gas, and toluene, a volatile organic compound gas, as well as the utilization of these resources over the past two years. These materials include adsorption materials, catalytic oxidation materials, hydrogen-reforming catalytic materials and non-oxidative coupling catalytic materials for methane, and adsorption materials, catalytic oxidation materials, chemical cycle reforming catalytic materials, and degradation catalytic materials for toluene. This paper provides a comprehensive review of these research results from a general point of view and provides an outlook on the treatment of these two gases and materials for resource utilization.

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Effect of cold plasma treatment and plasma‐activated water on physicochemical and structural properties of starch: A green and novel approach for environmental sustainability

Gupta,

Guha,

Srivastav

2024

Plasma Processes & Polymers

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Starch is a crucial part of the human dietary regimen. Still, its restricted water solubility, low viscosity, and weak heat stability are unfavorable physicochemical characteristics that restrict its use in food applications. So, in the 21st century, green and novel technologies such as cold plasma technology (CPT) and plasma‐activated water (PAW) have been employed for starch modification to improve the starch's physicochemical, digestibility, functional, structural, and thermal properties. This article provided an in‐depth evaluation of the use of cold plasma intervention in starch systems. Moreover, starch was modified due to cross‐linking, plasma etching, and depolymerization mechanisms mediated by plasma species. We may conclude that CPT and PAW are substitute methods for changing starch characteristics.

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Conversion mechanism of thermal plasma-enhanced CH4-CO2 reforming system to syngas under the non-catalytic conditions

Cited by 5 publications

References 65 publications

Reduction of an Ilmenite Concentrate by Using a Novel CO2/CH4 Thermal Plasma Torch

Reduction of an Ilmenite Concentrate by Using a Novel CO2/CH4 Thermal Plasma Torch

Materials Enabling Methane and Toluene Gas Treatment

Effect of cold plasma treatment and plasma‐activated water on physicochemical and structural properties of starch: A green and novel approach for environmental sustainability

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