Experimental study on chemical recuperation using hybrid dielectric barrier discharge-catalytic methane-steam reforming

Liu, Qian; Zheng, Hongtao; Ren, Yang; Pan, Gang

doi:10.1177/0957650914525611

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…Further, compared to previous work, 6 the selectivity towards CO and C 2 H 6 is found to enhance with the presence of β-Ga 2 O 3 . Although Liu et al reported a 100% selectivity for H 2 , the yield was only 20.14%, 61 which is lower compared to the H 2 yield (30%) obtained by plasma alone in the current work. Furthermore, they observed the reaction to be highly selective toward CO 2 (60% selectivity), whereas we did not observe CO 2 formation.…”

Section: Resultscontrasting

confidence: 81%

Boosting hydrogen production at room temperature by synergizing theory and experimentation

Thakkar,

Bajpai,

Kumar

et al. 2024

Preprint

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Methane is a major constituent of natural gas and is widely used in hydrogen production. However, its high symmetry poses a challenge, as breaking the strong C-H bond requires substantial energy input. Hence, there is a pressing need to develop efficient catalysts for methane conversion. By synergizing theory and experimentation, the search for a better catalyst can be accelerated, potentially boosting methane con- version processes. In the present work, theoretical findings prompted the experiments, which revealed the spontaneous dissociation of CH4 on selected facets of β-Ga2O3. Additionally, the activation barrier for ethane formation was merely 0.1 eV. NTP-assisted conversion of methane in the presence of β-Ga2O3 confirmed these findings. The formation rate of hydrogen and ethane rises to 366 µmolg−1h−1 and 86.62 µmolg−1h−1, respectively, in the presence of β-Ga2O3 , in contrast to 281.4 µmolg−1h−1 and 66 µmolg−1h−1 without catalysts. For the CH4-H2O reaction in the presence of β-Ga2O3 , there is an increase of 74.42% in the CO formation rate compared to the reaction without the catalyst. An electronic structure analysis revealed that electrophilic oxygen species on the β-Ga2O3 (-202) surface play a vital role in the decomposition of methane, facilitating C-H bond cleavage.

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Section: Resultscontrasting

confidence: 81%

Boosting hydrogen production at room temperature by synergizing theory and experimentation

Thakkar,

Bajpai,

Kumar

et al. 2024

Preprint

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“…A similar phenomenon was also observed by Liu et al. [ 314 ] These results demonstrate that plasma‐catalytic coupling is a feasible strategy to improve the efficiency of PASMR systems, and more research is needed in the future.…”

Section: Application Of Plasma Technology For Different Ch4 Reforming...supporting

confidence: 85%

Plasma‐Assisted Reforming of Methane

Feng

Sun

et al. 2022

Advanced Science

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Methane (CH4) is inexpensive, high in heating value, relatively low in carbon footprint compared to coal, and thus a promising energy resource. However, the locations of natural gas production sites are typically far from industrial areas. Therefore, transportation is needed, which could considerably increase the sale price of natural gas. Thus, the development of distributed, clean, affordable processes for the efficient conversion of CH4 has increasingly attracted people's attention. Among them are plasma technology with the advantages of mild operating conditions, low space need, and quick generation of energetic and chemically active species, which allows the reaction to occur far from the thermodynamic equilibrium and at a reasonable cost. Significant progress in plasma‐assisted reforming of methane (PARM) is achieved and reviewed in this paper from the perspectives of reactor development, thermal and nonthermal PARM routes, and catalysis. The factors affecting the conversion of reactants and the selectivity of products are studied. The findings from the past works and the insight into the existing challenges in this work should benefit the further development of reactors, high‐performance catalysts, and PARM routes.

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“…Chemically recuperated gas turbine (CRGT), as a promising advanced cycle gas turbine, can greatly improve gas turbine thermal efficiency and reduce NOx emission. , In the past decades, many scholars have done a lot of experimental and theoretical work on CRGTs. − The CRGT concept is shown in Figure . Turbine exhaust is cascaded utilized by steam reformer (SR) and steam generator (SG), respectively.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on Low-Temperature Methane Steam Reforming Technology in a Chemically Recuperated Gas Turbine

Liu

Zheng

2014

Energy Fuels

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Under the operating parameters of a chemically recuperated gas turbine (CRGT), the low-temperature methane steam reforming test bench is designed and built; systematic experimental studies about fuel steam reforming are conducted. Four different reforming forms are employed, including catalyst-only reforming, plasma-only reforming, piecewise synergistic reforming, and parallel synergistic reforming. A better reforming form for CRGT was determined by analyzing the effect of methane space velocity, steam-to-carbon ratio of fuel reforming (S/C), wall temperature, and plasma input power. All of the above factors had an effect on the reforming performance, but a direct and significant effect separately on effective carbon recovery rate, total enthalpy increasing rate, methane conversion, and fuel heating value increasing rate. The effective carbon recovery rate was taken as the chief indicator for choosing the right operating conditions, determining a best methane space velocity of 680 mL/(gcat·h). With the increase of S/C, total enthalpy increasing rate had a significant improvement; wall temperature had a positive effect on reforming, especially in synergistic catalysis. The effect of input power was linked with wall temperature in parallel synergistic reforming, with a greater effect at a higher temperature. Combining the experimental results with the theory analysis, parallel synergistic reforming is best, with a methane conversion of 51.23% and total enthalpy increasing rate of 25.73% at a wall temperature of 500 °C, an input power of 84.53 W, and an S/C value of 2.

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Experimental study on chemical recuperation using hybrid dielectric barrier discharge-catalytic methane-steam reforming

Cited by 7 publications

References 19 publications

Boosting hydrogen production at room temperature by synergizing theory and experimentation

Boosting hydrogen production at room temperature by synergizing theory and experimentation

Plasma‐Assisted Reforming of Methane

Experimental Research on Low-Temperature Methane Steam Reforming Technology in a Chemically Recuperated Gas Turbine

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