Exploring the role of surface and porosity in CO2 capture by CaO-based adsorbents through response surface methodology (RSM) and artificial neural networks (ANN) DOI Creative Commons

Enrique Martínez de Salazar Martínez,

María Alexandre-Franco,

Alberto J. Nieto-Sánchez

и другие.

Journal of CO2 Utilization, Год журнала: 2024, Номер 83, С. 102773 - 102773

Опубликована: Май 1, 2024

In this study, synthetic CaCO3 materials were utilized as precursors for CaO-based CO2 sorbents. The investigation examined how various operating parameters—such synthesis temperature (ST), stirring rate (SR), and surfactant percentage (SP)—impact the properties of adsorbents. Samples firstly characterized by X-ray diffraction Scanning Electron Microscopy (SEM), which revealed that prevalence calcite or aragonite crystal phases in can be tuned adequately choosing dose (Triton-X100®), so it used a habit growth modifier. calcination process applied to leads formation partially sinterized cubic crystals CaO, accompanied minor quantities (< 5 %) additional compounds like Ca(OH)2 CaSO4. Specific surface area (SBET) porosity determined measuring N2 adsorption isotherms. A sample with an unprecedented value SBET large 116 m2/g was prepared under optimal conditions. pore volumes successfully correlated uptake capacity samples. is more influential experiments carried out diluted atmosphere. When pure used, influence meso- micropore (Vme Vmi) clearly predominant, suggests latter case diffusion through porous texture samples plays remarkable role. double-way approach Response Surface Methodology (RSM) use Artificial Neural Networks (ANNs) has been analyze Within operational interval, excellent results obtained flow, RSM ANNs have demonstrated very efficient tool correlate behavior sorbents Valuable information on (i) importance different factors study; (ii) their CaO-derived sorbents; (iii) subsequent capture performance obtained. suggest four parameters statistically significant uptake. These are SR, square its interaction SP, SP. Additionally, study assessed stability over 11 consecutive calcination-carbonation cycles. By strategy conditions, almost negligible shrinkage effect achieved, resulting sustained throughout

Язык: Английский

Chemical looping CO2 capture and in-situ conversion: Fundamentals, process configurations, bifunctional materials, and reaction mechanisms DOI Creative Commons
Bo Jin,

Kerun Wei,

Tong Ouyang

и другие.

Applications in Energy and Combustion Science, Год журнала: 2023, Номер 16, С. 100218 - 100218

Опубликована: Ноя. 4, 2023

As an emerging and promising technology to debate the energy environment issues raised by anthropogenic CO2 emissions, chemical looping capture in-situ conversion (CL-ICCC) exhibits merit of high efficiency, low cost, safety achieve integrated (ICCC) eliminating purification, compression, transportation, storage procedures. However, interpretation state-of-the-art CL-ICCC are still unclear, which contribute a harmful effect on promoting this for industrial applications. Herein, work presents timely review giving fundamental discussions definition, process configuration, bifunctional material, reaction mechanism thermo-economic behavior. Based product distributions (syngas, CO, CH4, C2H4/C3H6), systems using abundant materials with flexible combinations sorbents catalysts classified satisfy demand customers. Lots moderating strategies proposed enhance activity stability meanwhile, is revealed explain underlying reason superior performance. The challenges future prospectives from aspects microscopic mechanism, material rational design, equipment development system integration optimization discussed provide possible suggestions. This aims illustrate more clearly accelerate its commercial demonstration.

Язык: Английский

Процитировано

24
Experimental investigation of integrated CO2 capture and conversion to syngas via calcium looping coupled with dry reforming of CH4 DOI
Θεόδωρος Παπαλάς,

Dimitrios Lypiridis,

Andy N. Antzaras

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 485, С. 149866 - 149866

Опубликована: Фев. 20, 2024

Язык: Английский

Процитировано

14
Mechanochemical synthesis of Ni/MgO dual functional materials at room temperature for CO2 capture and methanation DOI

Zhan-Kuo Guo,

Su Gao,

Shu-Xiang Xiang

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 481, С. 148599 - 148599

Опубликована: Янв. 8, 2024

Язык: Английский

Процитировано

13
Material design and prospect of dual-functional materials for integrated carbon dioxide capture and conversion DOI Creative Commons
Bowen Lu,

Yu Fan,

Xinyu Zhi

и другие.

Carbon Capture Science & Technology, Год журнала: 2024, Номер 12, С. 100207 - 100207

Опубликована: Март 11, 2024

Large amounts of CO2 were discharged into the atmosphere, resulting in a severe greenhouse effect and inducing ecological environmental problems that threaten human survival. Integrated carbon dioxide capture conversion (ICCC) with Dual Functional Materials (DFMs) was promising process to emission flue gas convert it value-added chemicals, reducing energy consumption economic cost. The catalytic component DFMs enhances hydrogen source activation promotes carbonate hydrogenation produce high chemicals. achieved regeneration dual-functional materials, which is key realizing ICCC process. This research focuses on development different sources (hydrogen or light alkanes) for recent years. In addition, reaction mechanism components modification discussed improve in-situ activity Finally, future prospects anticipated guide application scenarios

Язык: Английский

Процитировано

13
Integrated CO2 Capture and Utilization: Selection, Matching, and Interactions between Adsorption and Catalytic Sites DOI Creative Commons
Hongman Sun, Shuzhuang Sun, Tong Liu

и другие.

ACS Catalysis, Год журнала: 2024, Номер 14(20), С. 15572 - 15589

Опубликована: Окт. 5, 2024

Integrated CO2 capture and utilization (ICCU) can achieve the conversion of captured into value-added products in a single reactor, enabling it to be one fundamental approaches eliminating emissions future. The rational design dual-functional materials (DFMs) combining adsorption catalytic sites is crucial realizing an efficient ICCU process. This Perspective promotes understanding through integrated methanation, reverse water gas shift, dry reforming methane, other technologies, focusing on selection matching between DFMs for enhanced performance. Interactions are pivotal mechanism studies directing catalyst design. proximity effect induced adsorbent–catalyst interaction comprehensively evaluated provide perspective principle DFMs. will theoretical foundations selecting DFMs, promoting comprehensive enhancement performance, thus facilitating carbon reduction goals.

Язык: Английский

Процитировано

13
The role of reverse Boudouard reaction during integrated CO2 capture and utilisation via dry reforming of methane DOI Creative Commons
Xiaotong Zhao, Shuzhuang Sun, Yuanyuan Wang

и другие.

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

Процитировано

12
Collaborative Influence of Ni Single Atoms and Oxygen Defects on Bi3O4Br for Boosting Light-Driven CO2 Hydrogenation to CH4 DOI

Weidan Meng,

Xinyuan Sui, Yu Liu

и другие.

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер 366, С. 125033 - 125033

Опубликована: Янв. 6, 2025

Язык: Английский

Процитировано

2
Achieving zero CO2 emissions from integrated biomass gasification with CO2 capture and utilization (IGCCU) DOI Creative Commons
Yuan Zhu, Bingxin Li, Jie Miao

и другие.

Chemical Engineering Journal, Год журнала: 2023, Номер 474, С. 145767 - 145767

Опубликована: Авг. 30, 2023

Biomass energy plays a crucial role in mitigating carbon emissions. However, the existing gasification technology faces challenges such as releasing undesirable CO2 produced syngas. Here we propose new concept for achieving zero emissions by integrating with capture and utilization (IGCCU) first time. During lignin gasification, valuable syngas (H2/CO) can be produced, gaseous products simultaneously captured CaO. After completing process, effectively converted to CO switching carrier gas from N2 H2. The results show that entire process achieves carbonation hydrogenation at 400 °C 550 °C, respectively. This approach allows significant reduction yield 0.95 mmol g−1CaO g−1lignin (benchmark experiment) nearly 0, using CaO an adsorbent catalyst. disappeared was into of CO, introducing H2 sorbent regeneration stage. Furthermore, excellent cyclic stability has been achieved after five cycles consistent 100% conversion during

Язык: Английский

Процитировано

20
Integrated Carbon Dioxide Capture and Utilization for the Production of CH4, Syngas and Olefins over Dual‐Function Materials DOI

Juanting Li,

He Xu, Rongrong Hu

и другие.

ChemCatChem, Год журнала: 2024, Номер 16(15)

Опубликована: Апрель 12, 2024

Abstract The massive emission of carbon dioxide produces the greenhouse effect and poses a threat to survival modern civilization. search for new management strategies has been at forefront scientific research over past few decades. Integrated capture utilization (ICCU), which aims CO 2 convert it in situ into high value‐added products or fuels, is considered be more attractive innovative than alternative strategies. This paper introduces adsorption capacity characteristics solid sorbents different operating temperatures. On this basis, recent on ICCU technology combined with methanation, reverse water−gas shift reaction, dry reforming alkanes dehydrogenation novel dual‐function materials presented, development direction future prospects are discussed.

Язык: Английский

Процитировано

8
Feasibility of green mechanochemical synthesis for dual function materials preparation DOI Creative Commons
Maila Danielis, Loukia-Pantzechroula Merkouri, Andrea Braga

и другие.

Journal of CO2 Utilization, Год журнала: 2024, Номер 86, С. 102895 - 102895

Опубликована: Авг. 1, 2024

Dual function materials (DFMs) are key for the integrated capture of CO2 from waste gas streams and its valorisation to valuable chemicals, such as syngas. To be able in commercial applications, DFMs require both high capacity catalytic activity, achieved by optimising synergistic interactions among metals, support adsorbent components. obtain increased interaction, dry milling process can used a sustainable, solvent free, green synthesis method. In this work, we report performance RuNi bimetallic supported on CeO2-Al2O3 promoted with CaO Na2O, synthesised mild-energy mechanochemical process. The show generally comparable, sometimes superior, activity Reverse Water-Gas Shift (RWGS) reaction CO production at 650 °C compared their counterpart prepared conventional impregnation method, underlining potential method highly functional DFMs. Remarkably, stability also maintained when O2 is present step, indicating real exhaust-gases applications. Also, direct air reported, further benefits approach creating versatile

Язык: Английский

Процитировано

7