Challenges and Opportunities: Metal–Organic Frameworks for Direct Air Capture

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(43)

Published: Oct. 12, 2023

Abstract Global reliance on fossil fuel combustion for energy production has contributed to the rising concentration of atmospheric CO 2 , creating significant global climate challenges. In this regard, direct air capture (DAC) from atmosphere emerged as one most promising strategies counteract harmful effects environment, and further development commercialization technology will play a pivotal role in achieving goal net‐zero emissions by 2050. Among various DAC adsorbents, metal–organic frameworks (MOFs) show great potential due their high porosity ability reversibly adsorb at low concentrations. However, adsorption efficiency cost‐effectiveness these materials must be improved widely deployed sorbents. To that end, perspective provides critical discussion several types benchmark MOFs have demonstrated capacities, including an assessment stability, mechanism, capture‐release cycling behavior, scale‐up synthesis. It then concludes highlighting limitations addressed go research laboratory implementation devices scale so they can effectively mitigate change.

Language: Английский

---

Upgrading recovered carbon black (rCB) from industrial-scale end-of-life tires (ELTs) pyrolysis to activated carbons: Material characterization and CO2 capture abilities

Environmental Research, Journal Year: 2024, Volume and Issue: 247, P. 118169 - 118169

Published: Jan. 18, 2024

The current study presents for the first time how recovered carbon black (rCB) obtained directly from industrial-scale end-of-life tires (ELTs) pyrolysis sector is applied as a precursor activated carbons (ACs) with application in CO2 capture. rCB shows better physical characteristics, including density and structure, well chemical properties, such consistent composition low impurity concentration, comparison to pyrolytic char. Potassium hydroxide air combination heat treatment (500–900 °C) were agents conventional activation of material. ACs tested their potential capture CO2. Ultimate proximate analysis, Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy energy dispersive X-ray (SEM-EDS), Raman spectroscopy, thermogravimetric analysis (TGA), N2/CO2 adsorption isotherms used material characterization methods. Analysis revealed that KOH-activated at 900 °C (AC-900K) exhibited highest surface area pore volume increased 6 3 times compared pristine rCB. Moreover, AC-900K possessed well-developed dual porosity, corresponding 22% 78% micropore mesopore volume, respectively. At 0 25 °C, also showed capacity equal 30.90 cm3/g 20.53 1 bar, along stable cyclic regeneration after 10 cycles. high dependence uptake on width below 0.7–0.8 nm was identified. selectivity towards relation N2 reached values 350.91 (CO2/N2 binary mixture) 59.70 (15% CO2/85% N2).

Language: Английский

---

Materials challenges on the path to gigatonne CO2 electrolysis

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(8), P. 535 - 549

Published: June 24, 2024

Language: Английский

---

Medium-pressure hydrogen storage on activated carbon derived from biomass conversion

Fuel, Journal Year: 2024, Volume and Issue: 363, P. 130975 - 130975

Published: Jan. 21, 2024

Language: Английский

---

Hydroxyl-Incorporated Microporous Polymer Comprising 3D Triptycene for Selective Capture of CO₂ over N₂ and CH₄

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

The rising CO2 concentration in the atmosphere contributes significantly to global warming, necessitating effective carbon capture techniques. Amine-based solvents are widely employed for chemisorption of CO2, although they have drawbacks, such as degradation, corrosion, and high regeneration energy requirements. Physical adsorption utilizing microporous adsorbents is a viable alternative that offers excellent efficiency selectivity capture. This work presents facile one-pot synthesis 3D-triptycene-containing hyper-cross-linked polymer (TBPP-OH) possessing hydroxyl groups. presence triptycene units TBPP-OH polymeric structure gives several desirable features, inherent microporosity, larger surface area, improved thermal stability. showed considerable microporosity (%Vmic = 70%), BET-specific area (SABET) 838 m2 g–1, good stability (Td 372 °C char yield > 60%) which makes it promising adsorbent A strong affinity was shown by with Qst 32.9 kJ/mol demonstrating superior capacity 2.77 mmol/g at 273 K 1 bar pressure where volume micropore plays significant role. values over N2 CH4 were also estimated be reasonably indicating potential separation different applications. mechanism investigated using Langmuir dual-site models.

Language: Английский

---

Advancements in biomass waste conversion to sustainable biofuels via gasification

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159151 - 159151

Published: Jan. 6, 2025

Language: Английский

---

Carbon Dioxide Capture by Emerging Innovative Polymers: Status and Perspectives

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(30)

Published: May 6, 2024

Abstract A significant amount of research has been conducted in carbon dioxide (CO 2 ) capture, particularly over the past decade, and continues to evolve. This review presents most recent advancements synthetic methodologies CO capture capabilities diverse polymer‐based substances, which includes amine‐based polymers, porous organic polymeric membranes, covering publications last 5 years (2019–2024). It aims assist researchers with new insights approaches develop innovative materials improved capturing capacity, efficiency, sustainability, cost‐effective, thereby addressing current obstacles storage sooner meeting net‐zero emission target.

Language: Английский

---

A review on development of post-combustion CO2 capture technologies: Performance of carbon-based, zeolites and MOFs adsorbents

Fuel, Journal Year: 2024, Volume and Issue: 371, P. 132103 - 132103

Published: June 9, 2024

Language: Английский

---

Enhancing carbon dioxide uptake in biochar derived from husk biomasses: Optimizing biomass particle size and steam activation conditions

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113352 - 113352

Published: June 17, 2024

This research focuses on developing activated biochars for CO2 adsorption, evaluating the impact of particle size and steam activation conditions almond shells (AS), pistachio (PS), nut (NS), three crops that are grown worldwide. A literature review was carried out characteristic parameters a biomass must have to produce biochar an acceptable quality capture CO2. Initially, physicochemical characterization selected biomasses conducted, revealing high levels volatiles (78–84 wt%), carbon (41–53 inherent metals (Ca, K, Mg Na). process involved pyrolysis under pre-established conditions, followed by adsorption analysis using thermogravimetry. Interestingly, intermediate-sized (ranging from 2 1.4 mm) exhibited higher uptake. Once optimal determined, were further optimized varying temperature. In this regard, these established at 900 °C 30 min, flow rate 0.15 mL/min pressure 1 bar. study highlighted heterogeneity, resulting in distinct morphologies (microporous PS biochars, mesoporous NS AS biochars) content compared raw materials. However, O/C H/C ratios fell as severity rose. On researching holding times constant temperature °C, similar trends observed, with biochars. Finally, based results, 2.81, 2.12 1.76 mmol/g PS, respectively, shorter (15 min)

Language: Английский

---

Techno-economic analysis of carbon capture and utilization technologies and implications for China

Renewable and Sustainable Energy Reviews, Journal Year: 2024, Volume and Issue: 199, P. 114550 - 114550

Published: May 10, 2024

Language: Английский

---