Enhancement of plasma-assisted catalytic CO2 reforming of CH4 to syngas by avoiding outside air discharges from ground electrode

Nguyen, Duc Ba; Trinh, Quang Hung; Hossain, Md. Mokter; Lee, Won Gyu; Mok, Young Sun

doi:10.1016/j.ijhydene.2019.06.167

Cited by 17 publications

(13 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The process is able to hydrogenate heavy oil in the cracking process for light product generation 65 . The technique can be utilized to create other atomic species: oxygen and nitrogen atoms (air plasma) for wastewater treatment, nitrogen atoms for ammonia production, and synthesis gas production 34,66,67 …”

Section: Resultsmentioning

confidence: 99%

“…65 The technique can be utilized to create other atomic species: oxygen and nitrogen atoms (air plasma) for wastewater treatment, nitrogen atoms for ammonia production, and synthesis gas production. 34,66,67 4 | CONCLUSIONS Partially hydrogenated FAME was successfully produced in the parallel-plate DBD plasma reactor. The optimized condition was 25% H 2 , 5.5 hours of reaction time, and ambient temperature.…”

Section: Preliminary Suggestion On Largescale and Environmental-frimentioning

confidence: 98%

See 1 more Smart Citation

Improvement of oxidation stability of fatty acid methyl esters derived from soybean oil via partial hydrogenation using dielectric barrier discharge plasma

et al. 2020

View full text Add to dashboard Cite

Summary Oxidation stability is an important biodiesel property. One of the methods to improve oxidation stability is partially hydrogenated fatty acid methyl esters (H‐FAME). The present research studied the novel production technique of H‐FAME derived from soybean FAME using non‐thermal parallel‐plate dielectric barrier discharge (DBD) plasma. This green hydrogenation method does not require a catalyst and can be performed under atmospheric pressure and at room temperature. The reaction using DBD plasma could effectively initiate the hydrogenation reaction, and the results showed similar performance to catalysis technique. The optimized process parameters for 35 mL of FAME were 25% H2, 5.5 hours of reaction time, and ambient temperature. This condition exhibited the highest conversion of polyunsaturated FAMEs (C18:2 and C18:3) and the highest yield of C18:1. DBD plasma hydrogenation resulted in the reduction of iodine value from 128 to 67.4. The oxidation stability was enhanced from 2.13 to 10 hours while the cloud point increased from −1°C to 11°C (still within the ASTM D6751 standard). This plasma process is a new alternative and eco‐friendly method for H‐FAME production.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Preliminary Suggestion On Largescale and Environmental-frimentioning

confidence: 98%

Improvement of oxidation stability of fatty acid methyl esters derived from soybean oil via partial hydrogenation using dielectric barrier discharge plasma

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Indeed, in this study, the SIE is several hundred J/L; consequently, the surface temperature of the ground electrode was less than 200 °C, unlike a high surface temperature (≥200 °C) under a larger SIE (kJ/L level) in the dry reforming of methane as presented elsewhere. 26 Interestingly, the overall toxic (O 3 and NO x ) emissions at the reactor outlet are drastically reduced in the modified reactor that utilizes the secondary toxic emission formed at the ground electrode without hampering the removal efficiency of C 2 H 4 , as shown in Figure 13. Regarding practical applications, the significant reduction of the secondary toxic emissions (O 3 and NO x ) is helpful in both the negative effects of O 3 during the storage of the agricultural products and obtained requirement of the threshold limits of NO 2 and O 3 in the airborne contaminants.…”

Section: Resultsmentioning

confidence: 98%

Influence of Background Gas for Plasma-Assisted Catalytic Removal of Ethylene in a Modified Dielectric Barrier Discharge-Reactor

Saud

Nguyen

Kim

et al. 2021

ACS Agric. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

The main objective of this work was to investigate the effect of background gas on ethylene removal. Specifically, based on the O 2 content in the background gas, the effectiveness of the system in terms of C 2 H 4 abatement and recognition of reaction pathways has been identified. A comparison between packed and non-packed catalysts in a dielectric barrier discharge (DBD) plasma reactor, as well as the behavior of the catalyst-packed system in the absence and presence of water vapor in the feed gas and the effect of shielding the ground electrode with the feed gas have been studied. For the plasma system without the catalyst, the C 2 H 4 removal increased with increased specific input energy along with larger toxic byproduct (O 3 , NO x ) generation. In the presence of a catalyst, the C 2 H 4 removal was enhanced along with lower traces of toxic byproducts due to the availability of active sites for C 2 H 4 and reactive species adsorption. The results also revealed that the C 2 H 4 removal efficiency was reduced in the presence of water content in the feed gas. Furthermore, C 2 H 4 was successfully removed by a modified DBD plasma reactor (the ground electrode was shielded with the feed gas and the reactor was packed with Pd/ZSM-5 catalysts) in which the toxic byproducts formed around the ground electrode passed through the plasma−catalyst zone. Finally, the modified DBD plasma reactor resulted in reduced overall byproducts while maintaining the removal efficiency.

show abstract

“…Nguyen et al [124] studied the DRM reaction in a DBD plasma reactor coupled with a Ni/α-Al 2 O 3 catalyst in a peculiar configuration in which the ground electrode was covered with an insulating oil jacket. This was to prevent external power dissipation, which could lead to both loss of energy for the endothermic reaction and air discharge which give rise to the formation of harmful substances, for example NO x .…”

Section: Co2 Reforming Of Methanementioning

confidence: 99%

A Review about the Recent Advances in Selected NonThermal Plasma Assisted Solid–Gas Phase Chemical Processes

et al. 2020

View full text Add to dashboard Cite

Plasma science has attracted the interest of researchers in various disciplines since the 1990s. This continuously evolving field has spawned investigations into several applications, including industrial sterilization, pollution control, polymer science, food safety and biomedicine. nonthermal plasma (NTP) can promote the occurrence of chemical reactions in a lower operating temperature range, condition in which, in a conventional process, a catalyst is generally not active. The aim, when using NTP, is to selectively transfer electrical energy to the electrons, generating free radicals through collisions and promoting the desired chemical changes without spending energy in heating the system. Therefore, NTP can be used in various fields, such as NOx removal from exhaust gases, soot removal from diesel engine exhaust, volatile organic compound (VOC) decomposition, industrial applications, such as ammonia production or methanation reaction (Sabatier reaction). The combination of NTP technology with catalysts is a promising option to improve selectivity and efficiency in some chemical processes. In this review, recent advances in selected nonthermal plasma assisted solid–gas processes are introduced, and the attention was mainly focused on the use of the dielectric barrier discharge (DBD) reactors.

show abstract

Enhancement of plasma-assisted catalytic CO2 reforming of CH4 to syngas by avoiding outside air discharges from ground electrode

Cited by 17 publications

References 48 publications

Improvement of oxidation stability of fatty acid methyl esters derived from soybean oil via partial hydrogenation using dielectric barrier discharge plasma

Improvement of oxidation stability of fatty acid methyl esters derived from soybean oil via partial hydrogenation using dielectric barrier discharge plasma

Influence of Background Gas for Plasma-Assisted Catalytic Removal of Ethylene in a Modified Dielectric Barrier Discharge-Reactor

A Review about the Recent Advances in Selected NonThermal Plasma Assisted Solid–Gas Phase Chemical Processes

Contact Info

Product

Resources

About