Adsorption of acetone, ethyl acetate and toluene by beta zeolite/diatomite composites: preparation, characterization and adsorbability

Yu, Shuyi; Wang, Xiaoyu; Liu, Fang; Xiao, Kunkun; Kang, Chunli

doi:10.1007/s11356-022-21308-5

Cited by 8 publications

(3 citation statements)

References 44 publications

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“…In order to describe the adsorption process of toluene on the Pseudo first-order model often best describes adsorption processes that are dominated by physical adsorption [50]. The combination of physical adsorption and chemical adsorption, where chemical adsorption dominates, is described using a pseudo second-order model [51].…”

Section: Adsorption Kinetics Of Ldhs With Different Solventmentioning

confidence: 99%

The role of layered double hydroxides shell in enhancing the adsorption capacity of NaY zeolite for toluene in wet conditions

Li,

Yin,

et al. 2024

Environmental Engineering Research

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Surface modification of zeolite is known to enhance its adsorption capacity for volatile organic compounds (VOCs). In this study, a hydrophobic adsorbent, NaY@LDHs, with layered double hydroxides (LDHs) as the shell and NaY zeolite as the core, was successfully synthesized. It was found that treating LDHs with ethanol can result in a larger specific surface area and pore volume, enhancing the adsorption performance of toluene under wet conditions. SEM imaging reveals that the LDHs shell grows vertically on the surface of the NaY zeolite. The dynamic adsorption experiment of toluene showed that under humid conditions, NaY@LDHs exhibited a saturated adsorption capacity of 32.42 mg/g, representing a significant 87% increase compared to the parent NaY zeolite. The kinetic results show that the adsorption of toluene on NaY@LDHs is primarily physical adsorption, and other factors influence the adsorption process in addition to intraparticle diffusion. Therefore, the air layer formed by the LDHs shell on the surface of NaY zeolite imparts a hydrophobic effect, making NaY@LDHs a promising material for adsorbing volatile organic compounds in a wet environment.

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Section: Adsorption Kinetics Of Ldhs With Different Solventmentioning

confidence: 99%

The role of layered double hydroxides shell in enhancing the adsorption capacity of NaY zeolite for toluene in wet conditions

Li,

Yin,

et al. 2024

Environmental Engineering Research

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show abstract

“…These structures not only possess a high specific surface area, but also maintain high cycle stability, as shown in Figure 11, which make the GQDs@ZIF-8 composite an ideal candidate for the highly efficient removal of VOCs. The adsorption capacity and adsorption rate of previous adsorbents for toluene and ethyl acetate are shown in Figure 12 [44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59]. Compared with other adsorbents, the GQDs@ZIF-8 composites exhibit excellent performance both in adsorption capacity and in removal percentage due to their unique nano-micro hierarchical pore structures generated from the optimized matching of GQDs and ZIF-8.…”

Section: Adsorption Performance Of Gqds@zif-8 Composites For Toluene ...mentioning

confidence: 99%

“…Figure 12. Comparison between previous works and this work on the adsorption properties ofGQDs@ZIF-8 composites for toluene (a)[44][45][46][47][48][49][50][51] and ethyl acetate (b)[52][53][54][55][56][57][58][59].…”

mentioning

confidence: 90%

Preparation and Adsorption Performance Study of Graphene Quantum Dots@ZIF-8 Composites for Highly Efficient Removal of Volatile Organic Compounds

Cheng

et al. 2022

Nanomaterials

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Based on the large specific surface area and excellent adsorption potential of graphene quantum dots (GQDs) and zeolitic imidazolate framework-8 (ZIF-8) materials, a GQDs@ZIF-8 composite was constructed to achieve optimal matching of the microstructure and to acquire efficient adsorption of volatile organic compounds (VOCs). GQDs and ZIF-8 were synthesized and then compounded by the solution co-deposition method to obtain GQDs@ZIF-8 composites. GQDs were uniformly decorated on the surface of the ZIF-8 metal–organic framework (MOF), effectively restraining the agglomeration, improving the thermal stability of ZIF-8 and forming abundant active sites. Thus, the VOC removal percentage and adsorption capacity of the GQDs@ZIF-8 composites were significantly improved. Toluene and ethyl acetate were chosen as simulated VOC pollutants to test the adsorption performance of the composites. The results showed that, after the addition of GQDs, the adsorption property of GQDs@ZIF-8 composites for toluene and ethyl acetate was obviously improved, with maximum adsorption capacities of 552.31 mg/g and 1408.59 mg/g, respectively, and maximum removal percentages of 80.25% and 93.78%, respectively, revealing extremely high adsorption performance. Compared with raw ZIF-8, the maximum adsorption capacities of the composites for toluene and ethyl acetate were increased by 53.82 mg/g and 104.56 mg/g, respectively. The kinetics and isotherm study revealed that the adsorption processes were in accordance with the pseudo-first-order kinetic model and the Freundlich isotherm model. The thermodynamic results indicated that the adsorption process of the GQDs@ZIF-8 composites was a spontaneous, endothermic and entropy increase process. This study provides a new way to explore MOF-based adsorption materials with high adsorption capacity which have broad application prospects in VOC removal fields.

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The effect of rare earth catalysts for the conversion of sucrose to lactic acid

Song,

Jin,

Chen

et al. 2024

Biomass Conv. Bioref.

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Adsorption of acetone, ethyl acetate and toluene by beta zeolite/diatomite composites: preparation, characterization and adsorbability

Cited by 8 publications

References 44 publications

The role of layered double hydroxides shell in enhancing the adsorption capacity of NaY zeolite for toluene in wet conditions

The role of layered double hydroxides shell in enhancing the adsorption capacity of NaY zeolite for toluene in wet conditions

Preparation and Adsorption Performance Study of Graphene Quantum Dots@ZIF-8 Composites for Highly Efficient Removal of Volatile Organic Compounds

The effect of rare earth catalysts for the conversion of sucrose to lactic acid

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