Adsorption characteristics of hexadecyl ammonium with different numbers of carbon chains in montmorillonite and the structure of the prepared composites

Qiu, Jun; Wu, Peng; Jiang, Shan; Cui, Kaibo; Chen, Guowei; Liu, Dongliang; Cui, Guangwen

doi:10.1007/s10934-021-01114-z

Cited by 1 publication

(1 citation statement)

References 37 publications

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“…Free energy refers to the part of internal energy that is reduced within the system that can be converted into work during a thermodynamic process. The Gibbs free energy in the adsorption process 31 refers to the increase of the free energy of the system with the increase of the unit area of the adsorbent under constant temperature and pressure. The adsorption free energy ΔG can be used to determine the adsorption mechanism, and its formula is:…”

Section: Adsorption Free Energy Analysismentioning

confidence: 99%

Adsorption of CO₂ by surface modified coal-based activated carbons: kinetic and thermodynamic analysis

Liu

Zhang

Chen

et al. 2022

Polish Journal of Chemical Technology

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The effects of different surface modifiers on the CO2 adsorption capacity of coal-based activated carbons were studied, and the diffusion behavior, adsorption kinetics and thermodynamic parameters of CO2 in activated carbons were analyzed. The results show that compared with ethylene glycol, 1,2-propylenediamine and zinc chloride, potassium hydroxide and sodium hydroxide can greatly improve CO2 adsorption capacity. The adsorption rate is faster, and the adsorption capacity is larger, with the maximum CO2 adsorption capacity being 33.54 mL/g. Fick’s law can well describe the diffusion behavior of CO2 in activated carbon. The addition of a surface modifier can increase the diffusion coefficient. The diffusion of CO2 in activated carbon falls into the category of crystal diffusion. The adsorption kinetics of CO2 before and after surface modification follow the Bangham equation. During the adsorption process, δ H < 0, δ G < 0, δ S < 0. Surface modification can reduce adsorption heat and promote adsorption, and the adsorption process is dominated by physisorption.

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Section: Adsorption Free Energy Analysismentioning

confidence: 99%

Adsorption of CO₂ by surface modified coal-based activated carbons: kinetic and thermodynamic analysis

Liu

Zhang

Chen

et al. 2022

Polish Journal of Chemical Technology

View full text Add to dashboard Cite

show abstract

Adsorption characteristics of hexadecyl ammonium with different numbers of carbon chains in montmorillonite and the structure of the prepared composites

Cited by 1 publication

References 37 publications

Adsorption of CO₂ by surface modified coal-based activated carbons: kinetic and thermodynamic analysis

Adsorption of CO₂ by surface modified coal-based activated carbons: kinetic and thermodynamic analysis

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Adsorption characteristics of hexadecyl ammonium with different numbers of carbon chains in montmorillonite and the structure of the prepared composites

Cited by 1 publication

References 37 publications

Adsorption of CO2 by surface modified coal-based activated carbons: kinetic and thermodynamic analysis

Adsorption of CO2 by surface modified coal-based activated carbons: kinetic and thermodynamic analysis

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Product

Resources

About

Adsorption of CO₂ by surface modified coal-based activated carbons: kinetic and thermodynamic analysis

Adsorption of CO₂ by surface modified coal-based activated carbons: kinetic and thermodynamic analysis