Elaboration of FAU-type zeolite beads with good mechanical performances for molecular decontamination

Rioland, Guillaume; Bullot, Laetitia; Daou, T. Jean; Simon‐Masseron, Angélique; Chaplais, Gérald; Faye, Delphine; Fiani, Emmanuel; Patarin, Joël

doi:10.1039/c5ra23258a

Cited by 26 publications

(33 citation statements)

References 48 publications

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“…Synthetic aluminosilicate zeolites are among the most widely produced zeolites and used in many applications in research and industry [ 5 , 6 , 7 , 8 ]. However, commercialized powder zeolites often present a low molecular sieve performance limiting the mass transfer of reactant and product molecules and causing deactivation of adsorbents [ 9 , 10 , 11 , 12 , 13 , 14 ]. A secondary dust contamination due to particles breeding could also occur [ 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

“…In order to overcome these constraints, zeolite crystal size reduction (<100 nm) through nanozeolite preparation [ 15 ], and assembly of nanozeolites into hierarchical porous materials by introducing secondary larger porosity into the zeolite’s intrinsic microporous framework, have been proposed [ 16 , 17 , 18 , 19 , 20 ]. Also, binding additives have been used as post-synthetic modification agents to convert the zeolite powder into pellets, tablets, films or other shapes suitable for practical use [ 10 , 11 ]. However, binding additives introduced in amounts of up to 50% ( w / w ) affect the zeolite’s adsorption properties and block its pores.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Binderless ZK-4 Zeolite Microspheres at High Temperature

et al. 2018

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Binderless zeolite macrostructures in the form of ZK-4 microspheres were prepared using anion-exchange resin beads as shape-directing macrotemplates. The particles were synthesized under hydrothermal conditions at different temperatures and treatment times. The influence of the different synthesis parameters was investigated by X-ray diffraction, scanning electron microscopy, fluorescence X, nitrogen adsorption measurements and 29Si solid-state NMR. Fully crystalline spheres similar in size and shape to the original resin beads were obtained by a hydrothermal treatment at the highest temperatures (150–180 °C) for a short treatment time of 24 h. The synthesized microspheres showed to be promising in the molecular decontamination of volatile organic compounds (VOCs).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Binderless ZK-4 Zeolite Microspheres at High Temperature

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Synthetic aluminosilicate zeolites are among the most widely produced zeolites and used in many applications in research and industry [5][6][7][8]. However, commercialized powder zeolites often present a low molecular sieve performance limiting the mass transfer of reactant and product molecules and causing deactivation of adsorbents [9][10][11][12][13][14]. A secondary dust contamination due to particles breeding could also occur [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…In order to overcome these constraints, zeolite crystal size reduction (<100 nm) through nano-zeolite preparation [15], and assembly of nano-zeolite into hierarchical porous materials by introducing secondary larger porosity into zeolite intrinsic microporous framework have been proposed [16][17][18][19][20]. Also, binding additives have been used as post-synthetic modification agents to convert the zeolite powder into pellets, tablets, films or other shapes suitable for practical use [10,11]. However, binding additives introduced in amounts of up to 50% (w/w) affect the zeolite's adsorption properties and block its pores.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Binderless ZK-4 Zeolite Microspheres at High Temperature

Fawaz

Salam

Nouali

et al. 2018

Preprint

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Binderless zeolite macrostructures in the form of ZK-4 microspheres were prepared using anion exchange resin beads as shape directing macrotemplates. The particles were synthesized under hydrothermal conditions at different temperatures and treatment times. The influence of the different synthesis parameters was investigated by X-ray diffraction, scanning electron microscopy, fluorescence X, nitrogen adsorption measurements and 29Si solid NMR. Fully crystalline spheres similar in size and shape to the original resin beads were obtained by a hydrothermal treatment at the highest temperatures (150 - 180 °C) for a short treatment time of 24 h. The synthesized microspheres showed to be promising in the molecular decontamination of Volatile Organic Compounds (VOCs).

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“…They are the result of a combination of AlO 4 and SiO 4 tetrahedra. Zeolites are often used in adsorption and catalytic applications due to their high thermal stability and interesting adsorption properties [9–15]. Today, 231 different zeolite structures have been discovered, but only some of them are currently used in industry [16–19].…”

Section: Introductionmentioning

confidence: 99%

Prediction of the mechanical properties of zeolite pellets for aerospace molecular decontamination applications

Rioland¹,

Dutournié²,

Faye³

et al. 2016

Beilstein J. Nanotechnol.

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Zeolite pellets containing 5 wt % of binder (methylcellulose or sodium metasilicate) were formed with a hydraulic press. This paper describes a mathematical model to predict the mechanical properties (uniaxial and diametric compression) of these pellets for arbitrary dimensions (height and diameter) using a design of experiments (DOE) methodology. A second-degree polynomial equation including interactions was used to approximate the experimental results. This leads to an empirical model for the estimation of the mechanical properties of zeolite pellets with 5 wt % of binder. The model was verified by additional experimental tests including pellets of different dimensions created with different applied pressures. The optimum dimensions were found to be a diameter of 10–23 mm, a height of 1–3.5 mm and an applied pressure higher than 200 MPa. These pellets are promising for technological uses in molecular decontamination for aerospace-based applications.

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Elaboration of FAU-type zeolite beads with good mechanical performances for molecular decontamination

Abstract: FAU-type zeolite beads were formed through an shearer/mixer using organic binder (carboxymethylcellulose (CMC)) or inorganic binder (anhydrous sodium metasilicate (Na2SiO3)).

Cited by 26 publications

References 48 publications

Synthesis of Binderless ZK-4 Zeolite Microspheres at High Temperature

Synthesis of Binderless ZK-4 Zeolite Microspheres at High Temperature

Synthesis of Binderless ZK-4 Zeolite Microspheres at High Temperature

Prediction of the mechanical properties of zeolite pellets for aerospace molecular decontamination applications

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