The role of reverse Boudouard reaction during integrated CO2 capture and utilisation via dry reforming of methane

Chemical Engineering Journal, Год журнала: 2024, Номер 491, С. 151668 - 151668

Опубликована: Апрель 26, 2024

Integrated carbon capture and utilisation (ICCU) is an emerging technology for simultaneous CO2 adsorption conversion into value-added products. This provides a more sustainable approach compared to storage. Dual-functional materials (DFMs) that couple sorbents (e.g. CaO) catalysts Ni) enable direct of sorbed reactions like dry reforming methane (DRM). However, the potential interactions between sorbent catalyst components within DFMs may induce distinct mechanisms individual materials. Elucidating these synergies interfacial phenomena vital guiding rational design DFMs. article investigates respective roles Ni/SiO2 sol–gel synthesised CaO in integrated via (ICCU-DRM) using decoupling approach. Through decoupled reactor experiments, it found activates react with deposits from CH4 decomposition, achieving maximal CO H2 yields 43.41 mmol g−1 46.78 as well 87.2 % at 650 °C. Characterisation shows coke would encapsulate Ni nanoparticles be active Boudouard reaction, indicating sufficient catalyst-sorbent contact necessary spillover. In-situ DRIFTS reveals no obvious CH4-CaCO3 reaction occurs, chemisorption on enables reverse which further verified by DFT calculations. The findings elucidate dependent synergistic CaO/CaCO3 ICCU-DRM, highlight importance catalyst-adsorbent optimising dual-functional

Язык: Английский

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Electrosynthesis of CO from an electrically pH-shifted DAC post-capture liquid using a catalyst:support amide linkage

Joule, Год журнала: 2025, Номер unknown, С. 101883 - 101883

Опубликована: Март 1, 2025

Язык: Английский

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Utilizing Limestone Alone for Integrated CO2 Capture and Reverse Water-Gas Reaction in a Fixed Bed Reactor: Employing Mass and Gas Signal Analysis

Processes, Год журнала: 2024, Номер 12(8), С. 1548 - 1548

Опубликована: Июль 24, 2024

The integrated CO2 capture and utilization coupled with the reverse water-gas shift reaction (ICCU-RWGS) presents an alternative pathway for converting captured into CO in situ. This study investigates effectiveness of three calcium-based materials (natural limestone, sol-gel CaCO3, commercial CaCO3) as dual-functional (DFMs) ICCU-RWGS process at intermediate temperatures (650–750 °C). Our approach involves a fixed-bed reactor mass spectrometry situ Fourier transform infrared (FTIR) measurements to examine cyclic behavior, detailed physical chemical properties, morphology. FTIR results revealed dominance RWGS route exhibited self-catalytic activity across all materials. Particularly, natural limestone demonstrated yield 12.7 mmol g−1 100% selectivity 81% conversion. Over 20th cycle, decrease capacity was observed: CaCO3 showed reductions 44%, 61%, 59%, respectively. suggests inevitable deactivation during reactions process, while skeleton structure effectively prevents agglomeration Ca-based materials, particularly CaCO3. These insights, cost-effectiveness CaO-alone DFMs, offer promising avenues efficient economically viable processes.

Язык: Английский

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Recent advances in graphitic carbon nitride-based heterojunction for biomedical applications

Chemical Engineering Journal, Год журнала: 2024, Номер 500, С. 157464 - 157464

Опубликована: Ноя. 1, 2024

Язык: Английский

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Waste tires to blue hydrogen by integrating plasma gasification process, CO2 capture and cascade power generation: New process development and technical feasibility analysis

Energy, Год журнала: 2024, Номер unknown, С. 134227 - 134227

Опубликована: Дек. 1, 2024

Язык: Английский

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Progress in carbon capture and impurities removal for high purity hydrogen production from biomass thermochemical conversion

Carbon Capture Science & Technology, Год журнала: 2024, Номер unknown, С. 100345 - 100345

Опубликована: Ноя. 1, 2024

Язык: Английский

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Bio-mitigation of CO2: The co-production of phycocyanin and optically pure (R)-γ-valerolactone with perfect enantiomeric excess

Bioresource Technology, Год журнала: 2024, Номер unknown, С. 131895 - 131895

Опубликована: Ноя. 1, 2024

Язык: Английский

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RDF gasification as a municipal solid waste management according to circular economy concept – Experimental studies

Fuel, Год журнала: 2024, Номер 385, С. 134093 - 134093

Опубликована: Дек. 16, 2024

Язык: Английский

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