CO2 capture by coal ash-derived zeolites- roles of the intrinsic basicity and hydrophilic character

Beltrao-Nuñes, Ana-Paola; Sennour, Radia; Aruş, Vasilica-Alisa; Anoma, Sarah; Pires, Marçal; Roy, René; Azzouz, Abdelkrim

doi:10.1016/j.jallcom.2018.11.133

Cited by 43 publications

(29 citation statements)

References 71 publications

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“…The basic strength accounts for CO 2 retention strength, and is proportional to the CO 2 desorption temperature. 30,[32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] For this purpose, 45-50 mg of each material sample was prone to previous saturation with dry and O 2 -free CO 2 and then to a 5 C min À1 heating rate from 20 C to a given temperature threshold under 5 mL min À1 nitrogen stream. This temperature threshold was evaluated as the stability range through TGA by means of a TA Instruments TGA (Q500)/discovery MS equipment.…”

Section: Materials Characterizationmentioning

confidence: 99%

Insights into the metal retention role in the antibacterial behavior of montmorillonite and cellulose tissue-supported copper and silver nanoparticles

et al. 2021

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Section: Materials Characterizationmentioning

confidence: 99%

Insights into the metal retention role in the antibacterial behavior of montmorillonite and cellulose tissue-supported copper and silver nanoparticles

et al. 2021

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“…Coal fly ash (CFA) is a typical coal-based solid waste that is produced in enormous amounts [ 1 , 2 ]. The production of CFA is expected to increase with economic increases, particularly in China, where the economy has displayed spectacular gross domestic product (GDP) growth in the last 30 years [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Study on the Overall Reaction Pathways and Structural Transformations during Decomposition of Coal Fly Ash in the Process of Alkali-Calcination

et al. 2021

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In this research, phase transformation and the role of NaOH on the structure of coal fly ash (CFA) during an alkali-calcination process were identified by a combination of X-ray powder diffraction (XRD), Fourier transform infrared (FTIR) and deconvolution analysis. The variation in the different functional groups and structural parameters of the raw and post-alkali calcinated CFA were analysed by deconvolution of the FTIR results, conducted with a Gaussian approach. The results, firstly, provide a deep insight into the functional groups in CFA. In CFA systems, the vibration signals of Q0, Q1, Q2 and Q3 were detected and the dominant structural units associated with Si tetrahedron groups were isolated to Q3 and Q2. Deconvolution analysis of the band from 400 to 1400 cm−1 showed that the added NaOH resulted in an increase in Q1 at the cost of Q3 and Q2 and the degree of reaction of the CFA was, therefore, decreased. Concurrently, it was established that the changes in the Gaussian peak component were related to the calcination temperature and time that allowed us to tailor the model of the structural decomposition of CFA.

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“…Amine-loaded porous materials such as activated carbonaceous materials, ,, silica support zeolites, ,− and porous polymers − appear to be feasible when used as adsorbents. Watcharop et al prepared mesoporous alumina-support amines as CO 2 adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Solid Amine Microspherical Adsorbent with High CO₂ Adsorption Capacity

2020

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Amine-skeleton solid-amine materials are promising adsorbents for CO 2 capture from flue gas. Here, a novel solid-amine microsphere was synthesized by cross-linking the skeleton poly(ethylenimine) (PEI) with ethylene glycol diglycidyl ether in a facile one-pot W/O emulsion system. The material had a remarkable CO 2 adsorption capacity of 7.28 mmol/g in the presence of moisture at 20 °C, 0.1 bar. The highest ratio of breakthrough capacity to saturation capacity was ca. 84%. According to kinetic simulation, the Avrami kinetic model could better describe the adsorption process of CO 2 under different temperatures, in which the value of R 2 was above 0.99 and n was between 1 and 2, indicating that both physical and chemical adsorption mechanisms were performed during adsorption. Moreover, the material had a high swelling speed. Equilibrium was established within 30 s, and the swelling ratio was 271% at equilibrium. The saturated adsorbent could be easily regenerated with a regeneration efficiency of 94.63% after six cycles. The PEI microsphere appears to be a promising candidate material for CO 2 capture from flue gas.

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CO2 capture by coal ash-derived zeolites- roles of the intrinsic basicity and hydrophilic character

Cited by 43 publications

References 71 publications

Insights into the metal retention role in the antibacterial behavior of montmorillonite and cellulose tissue-supported copper and silver nanoparticles

Insights into the metal retention role in the antibacterial behavior of montmorillonite and cellulose tissue-supported copper and silver nanoparticles

Study on the Overall Reaction Pathways and Structural Transformations during Decomposition of Coal Fly Ash in the Process of Alkali-Calcination

Preparation of a Solid Amine Microspherical Adsorbent with High CO₂ Adsorption Capacity

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CO2 capture by coal ash-derived zeolites- roles of the intrinsic basicity and hydrophilic character

Cited by 43 publications

References 71 publications

Insights into the metal retention role in the antibacterial behavior of montmorillonite and cellulose tissue-supported copper and silver nanoparticles

Insights into the metal retention role in the antibacterial behavior of montmorillonite and cellulose tissue-supported copper and silver nanoparticles

Study on the Overall Reaction Pathways and Structural Transformations during Decomposition of Coal Fly Ash in the Process of Alkali-Calcination

Preparation of a Solid Amine Microspherical Adsorbent with High CO2 Adsorption Capacity

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Preparation of a Solid Amine Microspherical Adsorbent with High CO₂ Adsorption Capacity