CeO<sub>2</sub>-Enhanced CO<sub>2</sub> Decomposition via Frosted Dielectric Barrier Discharge Plasma

Xia, Mengyu; Ding, Wanyan; Shen, Chenyang; Zhang, Zhitao; Liu, Changjun

doi:10.1021/acs.iecr.2c00201

Cited by 11 publications

(4 citation statements)

References 34 publications

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“…(a) Time-resolved concentrations of CO and (b) CO 2 conversion and CO yield over Ce 1– x Zr x O 2−δ (x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5). Comparison of PCLCS (over reduced Ce 0.7 Zr 0.3 O 2−δ ) and thermal chemical looping (CL) at 320 °C: (c) Time-resolved product composition, (d) CO yield and CO 2 conversion, and (e) CO 2 conversion with respect to the reaction temperature among PCLCS and state-of-the-art thermal CL CO 2 splitting works. − (f) CO 2 conversion among PCLCS and state-of-the-art NTP for CO 2 splitting. ,,− …”

Section: Resultsmentioning

confidence: 99%

Plasma Chemical Looping: Unlocking High-Efficiency CO₂ Conversion to Clean CO at Mild Temperatures

Long,

Wang,

Zhang

et al. 2024

JACS Au

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We propose a plasma chemical looping CO 2 splitting (PCLCS) approach that enables highly efficient CO 2 conversion into O 2 -free CO at mild temperatures. PCLCS achieves an impressive 84% CO 2 conversion and a 1.3 mmol g −1 CO yield, with no O 2 detected. Crucially, this strategy significantly lowers the temperature required for conventional chemical looping processes from 650 to 1000 °C to only 320 °C, demonstrating a robust synergy between plasma and the Ce 0.7 Zr 0.3 O 2 oxygen carrier (OC). Systematic experiments and density functional theory (DFT) calculations unveil the pivotal role of plasma in activating and partially decomposing CO 2 , yielding a mixture of CO, O 2 /O, and electronically/vibrationally excited CO 2 *. Notably, these excited CO 2 * species then efficiently decompose over the oxygen vacancies of the OCs, with a substantially reduced activation barrier (0.86 eV) compared to ground-state CO 2 (1.63 eV), contributing to the synergy. This work offers a promising and energy-efficient pathway for producing O 2 -free CO from inert CO 2 through the tailored interplay of plasma and OCs.

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Section: Resultsmentioning

confidence: 99%

Plasma Chemical Looping: Unlocking High-Efficiency CO₂ Conversion to Clean CO at Mild Temperatures

Long,

Wang,

Zhang

et al. 2024

JACS Au

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“…The rapid consumption of fossil fuels by industry has resulted in a large quantity of CO 2 that is being released into the atmosphere, which has caused a significant global ecological imbalance, as a result of the greenhouse effect. − In order to solve the global environmental problems, the carbon neutrality goal was proposed by the Intergovernmental Panel on Climate Change and has become an important goal to solve global environmental problems. In order to achieve carbon neutrality, convert CO 2 into valuable chemicals, actualize the resource utilization of carbon dioxide and the storage of clean energy, which has caused extensive research. − Light olefins (C 2 = –C 4 = ) are extremely important chemical materials, since they serve not only as biofuels but also as high value-added chemical precursors for products such as lubricants, polymers, and detergents. − Therefore, the technique for converting CO 2 into light olefins has attracted extensive attention worldwide.…”

Section: Introductionmentioning

confidence: 99%

Boosting Conversion of CO₂ to Light Olefins over MgO-Promoted ZnZrO/SAPO-34 Bifunctional Catalyst

Zhang

Cao

Gao

et al. 2023

Ind. Eng. Chem. Res.

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CO2 hydrogenation to produce light olefins is a hopeful route to the cyclic utilization of CO2. Although metal oxide/zeolite bifunctional catalysts show outstanding performance for CO2 hydrogenation to olefins, they still expect to further improve its performance. Here, a ternary metal oxide solid solution catalyst by incorporating MgO into ZnZrO to adjust the acid and redox active sites and coupled with SAPO-34 zeolite (noted as Mg-ZnZrO/SAPO-34) was developed. The Mg-ZnZrO/SAPO-34 catalyst exhibits light olefins yield of 5.7% that higher than those of ZnZrO/SAPO-34 catalyst (4.5%) at 390 °C. The results discovered that the introduction of MgO can neutralize the strong acid site of zeolite and generate more oxygen vacancies, and exhibit superior ability to adsorb and activate CO2 and H2. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) demonstrate that carbonate formation by CO2 adsorption of doped MgO and participation in the reaction to form more HCOO* and CH3O* species on the Mg-ZnZrO/SAPO-34 catalyst. The strategy via adjusting the acid intensity and the content of oxygen vacancies developed in this work supplies a guideline to design high-performance catalysts for CO2 utilization.

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“…DBD plasma works at atmospheric pressure and produces a low-temperature plasma. The operating parameters of plasma such as supplied power, treatment time, used gases, and their flow rate play an important role in the modification of material surfaces. , A lot of details have been summarized in the review by Liu et al Liu et al . studied CeO 2 enhanced CO 2 decomposition via frosted dielectric barrier discharge plasma.…”

Section: Introductionmentioning

confidence: 99%

Effects of Plasma Modification and Atmosphere on the Catalytic Hydrothermal Liquefaction of Chlorella

Haque

Perez

Brdecka

et al. 2022

Ind. Eng. Chem. Res.

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The development of third-generation biofuels from microalgae has been extensively researched over the last few years. Hydrothermal liquefaction (HTL) is a promising route for producing bio-oils from wet algae. The major drawback in HTL is the high temperature and high pressure that result in the high capital cost of the process. To make HTL an economical process for bio-oil production, the temperature and pressure should be reduced, which can be achieved by adding alcohol to water for HTL. The efficiency of the HTL process can also be improved by using a suitable heterogeneous catalyst with additional modifications. In this work, we investigated the effect of dielectric barrier discharge (DBD) plasma (argon and hydrogen plasma) modified zeolite Y as catalysts on the yield and quality of bio-oils produced in a hydrogen atmosphere versus air at different reaction times (0 and 15 min) and temperatures (240 and 250 °C). The mixture of solvents (50 vol % water and 50 vol % ethanol) was used in HTL to increase the yield and quality of bio-oils. Two sequential extractions were used to extract bio-oils from HTL products using dichloromethane. Different analytical techniques, such as thermal gravimetric analysis, elemental analysis, and gas chromatography−mass spectrometry, were used to understand the physicochemical properties of the bio-oils and for the determination of the higher heating value (HHV). The introduction of DBD plasma to modify zeolite Y improved the bio-oil quality and yield from HTL processes. The H 2 plasma modified catalyst enhanced the bio-oil yield at 240 °C from 46.83 ± 1.48% (240-0-H 2 -ZY) to 50.04 ± 0.88% (240-0-H 2 -ZY-HP) and from 50.24 ± 1.96% (250-0-H 2 -ZY) to 53.01 ± 0.73% (250-0-H 2 -ZY-HP) at 250 °C. The argon plasma modified catalyst reduced N-containing compounds from 29.42% (240-0-H 2 -ZY) to 2.94% (240-0-H 2 -ZY-AP) and decreased O-containing compounds from 4.02% (240-0-H 2 -ZY) to 1.38% (240-0-H 2 -ZY-AP) at 240 °C.

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CeO₂-Enhanced CO₂ Decomposition via Frosted Dielectric Barrier Discharge Plasma

Cited by 11 publications

References 34 publications

Plasma Chemical Looping: Unlocking High-Efficiency CO₂ Conversion to Clean CO at Mild Temperatures

Plasma Chemical Looping: Unlocking High-Efficiency CO₂ Conversion to Clean CO at Mild Temperatures

Boosting Conversion of CO₂ to Light Olefins over MgO-Promoted ZnZrO/SAPO-34 Bifunctional Catalyst

Effects of Plasma Modification and Atmosphere on the Catalytic Hydrothermal Liquefaction of Chlorella

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CeO2-Enhanced CO2 Decomposition via Frosted Dielectric Barrier Discharge Plasma

Cited by 11 publications

References 34 publications

Plasma Chemical Looping: Unlocking High-Efficiency CO2 Conversion to Clean CO at Mild Temperatures

Plasma Chemical Looping: Unlocking High-Efficiency CO2 Conversion to Clean CO at Mild Temperatures

Boosting Conversion of CO2 to Light Olefins over MgO-Promoted ZnZrO/SAPO-34 Bifunctional Catalyst

Effects of Plasma Modification and Atmosphere on the Catalytic Hydrothermal Liquefaction of Chlorella

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About

CeO₂-Enhanced CO₂ Decomposition via Frosted Dielectric Barrier Discharge Plasma

Plasma Chemical Looping: Unlocking High-Efficiency CO₂ Conversion to Clean CO at Mild Temperatures

Plasma Chemical Looping: Unlocking High-Efficiency CO₂ Conversion to Clean CO at Mild Temperatures

Boosting Conversion of CO₂ to Light Olefins over MgO-Promoted ZnZrO/SAPO-34 Bifunctional Catalyst