Tuning the composition of highly stable mixed-metal MOFs by microwave-assisted hydrothermal method for ultra-high selective and simultaneous capture of CO2 and H2S

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154479 - 154479

Published: Aug. 7, 2024

Language: Английский

---

CO₂ Capture from Flue Gas on a Pilot Scale Using Porous Carbon Prepared from Cotton Stalk Crop Residues through an Industrially Viable Activation Process

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(10), P. 4714 - 4729

Published: Feb. 29, 2024

With the aim to capture CO2 from flue gas, porous carbon was derived abundantly available, nonfodder crop residue─cotton stalk via thermochemical methodology. The precursor treated with a new combination of chemical activating agents (NaOH and K2SO4) in stoichiometric proportions converted single-step activation. transition using this place conventional KOH activation production offers an attractive industrial opportunity, due substantial drop cost manufacturing. Extensive characterizations were performed on carbon, which included XRD, XPS, Raman spectra, SEM, TEM. Nitrogen adsorption–desorption isotherm analysis at 77 K revealed BET-specific surface areas 1797 m2/g, along uptake capacities 4.77, 2.49, 1.71 mmol/g 273, 298, 313 K, respectively. Furthermore, breakthrough curve adsorption fixed-bed column studied different flow rates temperatures gas (11 ± 0.2% 89 N2) analyze equilibrium capacity adsorbent dynamic conditions. As proof concept, packed cartridge emanating pilot-scale diesel-fired boiler studied. This demonstrated that cartridges can efficiently practically remove especially small-scale applications.

Language: Английский

---

Valorization of diverse waste-derived nanocellulose for multifaceted applications: A review

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: unknown, P. 136130 - 136130

Published: Oct. 1, 2024

Language: Английский

---

Improving CO2 adsorption efficiency of an amine-modified MOF-808 through the synthesis of its graphene oxide composites

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Aug. 14, 2024

This research developed a novel composite of MOF-NH2 and graphene oxide (GO) for enhanced CO2 capture. Employing the response surface methodology-central design (RSM-CCD) experiments design, various MOF-NH2/GO samples with GO loadings from 0 to 30 wt% were synthesized. The results SEM, XRD, EDS, BET analysis revealed that materials maintained their MOF crystal structure, confirmed by X-ray diffraction, exhibited unique texture, high porosity, oxygen-enriched chemistry. influence temperature (25–65 °C) pressure (1–9 bar) on adsorption capacity was assessed using volumetric system. Optimum conditions obtained at weight percent 22.6 GO, 25 °C, 9 bar maximum 303.61 mg/g. incorporation amino groups capacity. Isotherm kinetic analyses indicated Freundlich Fractional-order models best described behavior. Thermodynamic showed process exothermic, spontaneous, physical, enthalpy changes − 16.905 kJ/mol, entropy 0.030 kJ/mol K, Gibs energy 7.904 kJ/mol. Mass transfer diffusion coefficients increased higher loadings. Regenerability tests demonstrated performance resilience, only 5.79% decrease in efficiency after fifteen cycles. These findings suggest significant potential these composites capture technologies.

Language: Английский

---

A critical review on 3D-printed adsorbents, membranes, and catalysts for carbon dioxide capture, separation, and conversion

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 472, P. 143522 - 143522

Published: Aug. 30, 2024

Language: Английский

---