2021
DOI: 10.1021/acssuschemeng.0c07162
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Enhanced Activity of Integrated CO2 Capture and Reduction to CH4 under Pressurized Conditions toward Atmospheric CO2 Utilization

Abstract: Direct conversion of dilute CO2 contained in power plant or industrial exhaust gas and the atmosphere into high-concentration hydrocarbons without a need of separate CO2 capture and purification processes is one of the awaited technologies in envisioned low-carbon societies. In this study, we investigated the performance of integrated CO2 capture and reduction to CH4 over Nibased dual functional catalysts promoted with Na, K and Ca. Ni/Na-γ-Al2O3 exhibited the highest activity for integrated CO2 (5% CO2) captu… Show more

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Cited by 87 publications
(66 citation statements)
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“…A similar process using a Ni/Na-g-Al 2 O 3 dual-function material has also been proposed; 100 ppm CO 2 feeds were converted to 11.5% CH 4 in a cyclic sorption and hydrogenation process. 349 Opportunities for passive contacting with CO 2 in the air, and leveraging existing civil and industrial infrastructure. 'Passive' contactors have been proposed as novel DAC technologies suitable for specific applications.…”
Section: Assessment Of Alternative Processes For Direct Air Capturementioning
confidence: 99%
“…A similar process using a Ni/Na-g-Al 2 O 3 dual-function material has also been proposed; 100 ppm CO 2 feeds were converted to 11.5% CH 4 in a cyclic sorption and hydrogenation process. 349 Opportunities for passive contacting with CO 2 in the air, and leveraging existing civil and industrial infrastructure. 'Passive' contactors have been proposed as novel DAC technologies suitable for specific applications.…”
Section: Assessment Of Alternative Processes For Direct Air Capturementioning
confidence: 99%
“…73 Recent progress in dual-function materials, which are active for both CO 2 capture and utilization, offers a new perspective on system design. [74][75][76] DAC and reduction take place in sequence so that regeneration can be avoided. In practice, the sorbent particle size, packing surface area, and height/diameter ratios of contactors, among others, should be assessed.…”
Section: Xuancan Zhu Is An Assistantmentioning
confidence: 99%
“…83 Because a DAC facility can provide on-site CO 2 generation anywhere, its application is advantageous in addition to its environmental benefits. Recently, the potential application of adsorption-based DAC in indoor air removal, 115,191,193,208,209 CO 2 fertilization, 178,210 biomass production, [211][212][213][214][215] fuel production (CH 4 , 68,70,75,[216][217][218][219][220][221][222] methanol, 71,[223][224][225][226] aviation fuel, 73,[227][228][229][230][231][232] hydrocarbons 233 ), chemicals (Fischer-Tropsch process, 234,235 carbon nanotubes, 236 dimethyl carbonate, 237 syngas 238,239 ), mineralization, [240][241][242][243][244] storage, 245,246 enhanced oil recovery (EOR), …”
Section: Overview Of Adsorption-based Dac Technologiesmentioning
confidence: 99%
“…For example, there are some reports on the chemical conversion of CO 2 by using low-concentration CO 2 . [11][12][13] Very recently, CO 2 conversion to CH 4 with low CO 2 concentration gas (100-400 ppm) was successfully achieved, though it requires rather high temperature and pressurized condition.…”
Section: Direct Use Of Comentioning
confidence: 99%