Binderless zeolite LTA beads with hierarchical porosity for selective CO2 adsorption in biogas upgrading

Boer, Dina G.; Langerak, Jort; Bakker, Benny; Pescarmona, Paolo P.

doi:10.1016/j.micromeso.2022.112208

Cited by 14 publications

(15 citation statements)

References 44 publications

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“…The trend of the adsorption capacity of HCPs for the gases follows the sequence of CO 2 > CH 4 > CO, similar to that of their polarities, which follow the sequence CO 2 (29.11 × 10 −25 /cm 3 ) > CH 4 (25.93 × 10 −25 /cm 3 ) > CO (19.5 × 10 −25 / cm 3 ). 36,37 The uptakes of CO 2 in HCP-1 and HCP@ MAO(Fe) reach 1.23 and 1.07 mmol/g, respectively, which is the same as the trend of the BET surface area. The value of S BET(HCP)-1 /S BET(HCP@MAO(Fe)) is up to 1.8, which is much higher than the ratio of the CO 2 adsorption capacity of Q (HCP-1) /Q (HCP@MAO(Fe)) = 1.1.…”

Section: Adsorption Of Co 2 Co and Chsupporting

confidence: 61%

Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation

Wang,

Chen,

Yao

et al. 2023

Energy Fuels

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The morphology and regeneration ability of adsorbents are important for gas pressure swing adsorption and separation. Herein, HCP-1 (a hyper-crosslinked polymer) and HCP@MAO(Fe) (a hyper-crosslinked polymer modified by ferrocene) with a spherical morphology are synthesized by a post-crosslinking reaction of chloromethylated styrene-divinylbenzene (Cl-St-DVB) beads for the separation of CO2/CO and CO2/CH4. Both static adsorption and dynamic separation tests verified that HCP@MAO(Fe) has the best gas adsorption and separation performance. The highest adsorption capacity of CO2 reached 1.24 mmol/g. The IAST selectivity of CO2/CO is up to 20.6. Moreover, HCP@MAO(Fe) can be regenerated by simple vacuum operation, contributing to the low value of adsorption enthalpy (24.5 KJ/mol). The adsorption mechanism between CO2 and the resin framework was also studied by experiments and electrostatic potential map analysis. A stronger interaction can be found between CO2 and HCP@MAO(Fe) as a result of the higher Mulliken charge of the cyclopentadiene structure.

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Section: Adsorption Of Co 2 Co and Chsupporting

confidence: 61%

Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation

Wang,

Chen,

Yao

et al. 2023

Energy Fuels

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“…Binderless zeolite LTA beads have been synthesized using resin beads as a hard template. 160 The resin beads were added to the zeolite synthesis mixture and resin-zeolite composite beads were formed. The resin was then removed by calcination, yielding hierarchically porous binderless zeolite beads (0.5−1 mm).…”

Section: Toward Industrial Application: Zeolites In Macroscopic Formatmentioning

confidence: 99%

“…Binderless zeolite LTA beads have been synthesized using resin beads as a hard template . The resin beads were added to the zeolite synthesis mixture and resin-zeolite composite beads were formed.…”

Section: Toward Industrial Application: Zeolites In Macroscopic Formatmentioning

confidence: 99%

Zeolites as Selective Adsorbents for CO₂ Separation

Boer

Langerak²,

Pescarmona

2023

ACS Appl. Energy Mater.

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Zeolites are a very versatile class of materials that can display selective CO2 adsorption behavior and thus find applications in carbon capture, storage, and utilization (CCSU). In this contribution, the properties of zeolites as CO2 adsorbents are reviewed by critically presenting and discussing their assets and limitations. For this purpose, we first provide an overview of the CO2 adsorption mechanisms on different types of zeolites. Then, we systematically discuss the relationship between the physicochemical properties of zeolites (framework type, Si/Al ratio, and extra-framework cations) and their performance as CO2 adsorbents for the separation of CO2/CH4 (biogas) and CO2/N2 (flue gas) mixtures. Based on the trends and properties identified, we provide a comparison of the different zeolites and highlight their advantages and drawbacks for applicability in CO2 adsorption. Finally, we present the state of the art in the shaping of zeolites in macroscopic format, which is a key step toward their industrial utilization as adsorbents.

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“…The post-treatment method consisted of strongly blending calcined defective zeolites with silica sol binder, alkaline hydrothermal conversion, and subsequent calcination, which is complex and energy-consuming. Boer et al synthesized binderless zeolite LTA adsorbents with a macroscopic bead format and hierarchical porosity, reaching higher CO 2 /CH 4 selectivity and similar CO 2 adsorption compared to commercial zeolite LTA pellets containing a binder [16]. The synthesis utilized Amberlite IRA-900 anion-exchange resin beads as a hard template, which was subsequently removed using high-temperature calcination.…”

Section: Introductionmentioning

confidence: 99%

Spherical Binderless 4A/5A Zeolite Assemblies: Synthesis, Characterization, and Adsorbent Applications

Li,

Wang,

Gao

et al. 2024

Molecules

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Zeolite microspheres have been successfully applied in commercial-scale separators such as oxygen concentrators. However, further enhancement of their applications is hampered by the post-synthetic shaping process that formulates the zeolite powder into packing-sized spherical bodies with various binders leading to active site blockage and suboptimal performance. Herein, binderless zeolite microspheres with a tunable broad size range from 2 µm to 500 µm have been developed with high crystallinity, sphericity over 92%, monodispersity with a coefficient of variation (CV) less than 5%, and hierarchical pore architecture. Combining precursor impregnation and steam-assisted crystallization (SAC), mesoporous silica microspheres with a wide size range could be successfully transformed into zeolite. For preserved size and spherical morphology, a judicious selection of the synthesis conditions is crucial to ensure a pure phase, high crystallinity, and hierarchical architecture. For the sub-2-µm zeolite microsphere, low-temperature prolonged aging was important so as to suppress external zeolization that led to a large, single macroporous crystal. For the large 500 µm sphere, ultrasound pretreatment and vacuum impregnation were crucial and facilitated spatially uniform gel matrix dispersion and homogenous crystallization. The obtained zeolite 5A microspheres exhibited excellent air separation performance, while the 4A microspheres displayed ammonium removal capabilities. This work provides a general strategy to overcome the existing limitations in fabricating binder-free technical bodies of zeolites for various applications.

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Binderless zeolite LTA beads with hierarchical porosity for selective CO2 adsorption in biogas upgrading

Cited by 14 publications

References 44 publications

Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation

Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation

Zeolites as Selective Adsorbents for CO₂ Separation

Spherical Binderless 4A/5A Zeolite Assemblies: Synthesis, Characterization, and Adsorbent Applications

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Binderless zeolite LTA beads with hierarchical porosity for selective CO2 adsorption in biogas upgrading

Cited by 14 publications

References 44 publications

Hyper-Crosslinked Resins Modified by Ferrocene for CO2/CO and CO2/CH4 Separation

Hyper-Crosslinked Resins Modified by Ferrocene for CO2/CO and CO2/CH4 Separation

Zeolites as Selective Adsorbents for CO2 Separation

Spherical Binderless 4A/5A Zeolite Assemblies: Synthesis, Characterization, and Adsorbent Applications

Contact Info

Product

Resources

About

Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation

Hyper-Crosslinked Resins Modified by Ferrocene for CO₂/CO and CO₂/CH₄ Separation

Zeolites as Selective Adsorbents for CO₂ Separation