Energy efficient catalytic CO2 desorption: mechanism, technological progress and perspective

Carbon Capture Science & Technology, Journal Year: 2023, Volume and Issue: 6, P. 100099 - 100099

Published: Jan. 13, 2023

High energy penalty in amine-based solvent regeneration process is a critical challenge industrial application for post-combustion CO2 capture technology. Recently, many efforts have been made to devise strategies lowering the requirement, such as using efficient blended amine systems combine advantages of different amines and/or adding solid acid catalysts. This perspective aims at reviewing most recent advances and opportunities reduce cost by applying various catalysts process. By analyzing non-catalytic mechanism solutions (including single solutions), we can further explore plausible catalytic desorption over CO2-loaded solution. A wide range reported, including Brønsted/Lewis catalysts, acid-base bifunction metal oxide ion mediated nanofluids absorbents carbonic anhydrases, their performance CO2-amine-water discussed detail. The main analytical techniques determining peculiar physico-chemical properties described. effects on regarding cyclic capacity, rate consumption are depth. Furthermore, structure-activity relationships stability continuous use carefully elaborated. Finally, types that assemble highest quality some considerations implication illustrated. review provide guidance future development new In this regard, addition solution which synthesized loading supporting material, especially bi-functional catalyst, seems be recommendable strategy.

Language: Английский

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Ni-functionalized Ca@Si yolk-shell nanoreactors for enhanced integrated CO2 capture and dry reforming of methane via confined catalysis

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 348, P. 123838 - 123838

Published: April 24, 2024

The emerging integrated CO2 capture and utilization (ICCU) potentially contributes to net zero emissions with low cost high efficiency. catalytic performance in ICCU process is highly restricted by the equilibriums of carbonate decomposition dry reforming methane (DRM). Here, we engineer a unique yolk-shell dual functional nanoreactor construction improve via confined catalysis. By tailoring carbonates kinetics confining diffusion path, ∼92% conversion achieved over (Ni/Ca)@Si shows no distinct activity loss 10 cycles at 650 °C. formed Ca2SiO4 shells restrain sintering CaO yolks acting as physical barriers, stabilize Ni particle size. It also confirmed on situ DRIFTS that DRM might occur carbonyls, formates CHO intermediates, which species are dependent Ni-carbonates interfaces.

Language: Английский

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Integrated CO₂ capture and utilization: a review of the synergistic effects of dual function materials

Catalysis Science & Technology, Journal Year: 2024, Volume and Issue: 14(4), P. 790 - 819

Published: Jan. 1, 2024

Recent years have witnessed rapid advancements in carbon capture, storage, and utilization (CCUS) technologies, which are key to reducing greenhouse gas emissions improving sustainable development.

Language: Английский

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Two-dimensional carbide/nitride (MXene) materials in thermal catalysis

Journal of Materials Chemistry A, Journal Year: 2022, Volume and Issue: 10(37), P. 19444 - 19465

Published: Jan. 1, 2022

In this article, we systematically summarize MXenes as both catalysts and supports in thermal catalysis, emphasizing the termination groups, active sites, metal–MXene interactions.

Language: Английский

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Recent progress in calcium looping integrated with chemical looping combustion (CaL-CLC) using bifunctional CaO/CuO composites for CO2 capture: A state-of-the-art review

Fuel, Journal Year: 2022, Volume and Issue: 334, P. 126630 - 126630

Published: Nov. 8, 2022

Language: Английский

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An investigation of the Ni/carbonate interfaces on dual function materials in integrated CO2 capture and utilisation cycles

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 338, P. 123053 - 123053

Published: June 28, 2023

Language: Английский

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Upgrading CO2 from simulated power plant flue gas via integrated CO2 capture and dry reforming of methane using Ni-CaO

Separation and Purification Technology, Journal Year: 2022, Volume and Issue: 308, P. 122956 - 122956

Published: Dec. 19, 2022

Integrated CO2 capture and utilisation via dry reforming of methane (ICCU-DRM) represents a promising profitable route for directly capturing converting from various sources. However, the influence realistic flue gas conditions on ICCU-DRM remains unknown challenging. Herein, we investigated presence H2O O2 in power plant integrated DRM using Ni10-CaO dual functional material (DFM). It is found that promoted kinetics capture, while oxidised Ni into NiO prohibited performance captured during DRM. Specifically, delay pre-reduction coverage catalytic sites by formed CaCO3 decreased process efficiency. The reduction would instantly generate hinder contact between CH4 Ni, resulting lower initial (DRM) ICCU. Due to occurrence decomposition DRM, following step produce CO gas, which could be problematic, owing carbon gasification reactions. An extra steam (CSG) after effectively remove most deposited by-produce syngas. Subsequently, small amount residue CSG preferentially combusted then CaO instead generating CO. This study demonstrates feasibility challenges under simulated provides potential insights future investigation deployment this process.

Language: Английский

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CO2 capture from H2O and O2 containing flue gas integrating with dry reforming methane using Ni-doping CaO dual functional materials

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 468, P. 143712 - 143712

Published: May 25, 2023

Reducing carbon emissions remains a formidable challenge under present energy demands and structures. Integrated CO2 capture utilisation (ICCU) provides promising pathway for directly capturing simultaneously utilising from the diluted exhaust gas. Dry reforming of methane (DRM) can be integrated into step catalytic conversion captured with advantages two greenhouse gases to yield valuable syngas (CO + H2). The process has great challenges materials development efficient performance, in particular realistic conditions such as presence O2 H2O flue This work investigated ICCU-DRM using simulated (10 % 6.7 6.0 H2O) Ni-CaO dual functional materials, aiming optimise Ni loading metal support interaction. It is found that would significantly sinter further affect morphologies CaO adsorbents, resulting poorer performances. More notably, was firstly oxidised during subsequently went through pre-reduction period DRM step. Increased decreased difficulty activation; however, it derived more severe deposition. To avert direct contact deposition gas, extra steam gasification introduced, higher contributed selectively yielding by-product. Ni10-CaO DFM optimally performed <150 s delay, ∼85 ∼2 H2:CO ratio ∼75 CO selectivity CSG at 650 °C. interaction between poorly contributes performance due poor reducibility accessibility, particle size effects only play spectators this process.

Language: Английский

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Machine learning in absorption-based post-combustion carbon capture systems: A state-of-the-art review

Fuel, Journal Year: 2023, Volume and Issue: 353, P. 129265 - 129265

Published: July 25, 2023

Language: Английский

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Prussian blue derived Ca-Fe bifunctional materials for chemical looping CO2 capture and in-situ conversion

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 320, P. 123975 - 123975

Published: May 1, 2023

Language: Английский

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