3D-printed SAPO-34 monoliths for gas separation

Couck, Sarah; Cousin-Saint-Remi, Julien; Perre, Stijn Van Der; Baron, Gino V.; Minas, Clara; Ruch, Patrick; Denayer, Joeri

doi:10.1016/j.micromeso.2017.07.014

Cited by 107 publications

(77 citation statements)

References 30 publications

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“…Currently, printing methods are not limited to utilising inks comprised of plastics for art exhibitions and may also employ inks comprised of ceramics, metals, graphene additives, and even stimuli-responsive hydrogel composites [129] for prototyping and industrial applications [130][131][132]. Recently scaffolds [133], membranes [134][135][136], carbons [137], zeolites [138][139][140], aminosilicate adsorbents [141], and heterogeneous catalytic systems [142] by taking advantage of this technique.…”

Section: D Printing Methodsmentioning

confidence: 99%

Hierarchical Metal–Organic Frameworks with Macroporosity: Synthesis, Achievements, and Challenges

et al. 2019

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HIGHLIGHTS• The advantages of macroporous metal-organic frameworks (MOFs) in comparison with micro-and mesoporous MOFs are discussed.• A range of synthetic methods for the fabrication and characterisation of hierarchical MOFs with macroporosity are reviewed.• The applications, advancements, and challenges of each method are compared and assessed in detail.ABSTRACT Introduction of multiple pore size regimes into metalorganic frameworks (MOFs) to form hierarchical porous structures can lead to improved performance of the material in various applications.In many cases, where interactions with bulky molecules are involved, enlarging the pore size of typically microporous MOF adsorbents or MOF catalysts is crucial for enhancing both mass transfer and molecular accessibility. In this review, we examine the range of synthetic strategies which have been reported thus far to prepare hierarchical MOFs or MOF composites with added macroporosity. These fabrication techniques can be either pre-or post-synthetic and include using hard or soft structural template agents, defect formation, routes involving supercritical CO 2 , and 3D printing. We also discuss potential applications and some of the challenges involved with current techniques, which must be addressed if any of these approaches are to be taken forward for industrial applications.

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Section: D Printing Methodsmentioning

confidence: 99%

Hierarchical Metal–Organic Frameworks with Macroporosity: Synthesis, Achievements, and Challenges

et al. 2019

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“…At a channel scale, the chemical reactions are influenced by mass and heat transfer, which makes the flow regime, and the shape and size of the channels important subjects of study that may significantly improve the yield of the reactor if they are manipulated correctly. There is interest in 3D printed substrates, which allows the fabrication of many geometrical configurations . That, complemented with the increasing power of computers, opens a wide range of options for designers to optimize substrates and reactors.…”

Section: Introductionmentioning

confidence: 99%

Effect of substrate geometry and flow condition on the turbulence generation after a monolith

2020

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This paper reports a study of turbulence generation after a monolith honeycomb. Large eddy simulation is used to analyze the turbulence generated when steady, turbulent, or pulsating flow leaves a monolith channel. Substrates with different cell densities, wall thicknesses, and channel cross‐sectional shapes are investigated. The results show that the magnitude of the turbulence generated depends on the wall thickness and monolith void fraction, though not much on the cell density. For pulsating flow, different frequency of the pulsations produced only slightly different results, however, the amplitude of the pulsations is proportional to the magnitude of the turbulence generated. The outflow of the channels can act as a jet and trigger turbulence along a distance from 10 to 30 channel diameters, significantly affecting the total pressure drop and the inlet conditions for elements in series downstream, such as particulate filters or other substrates.

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“…Some of the technologies that can find a commercial path in the near future are hydrocolloids [20,21], powder compression [22][23][24], and casting [25]. Recently, 3D printing is being used for the production of shapes [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Extrusion and Characterization of High Si/Al Ratio ZSM-5 Using Silica Binder

et al. 2020

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Biogas upgrading is a key operation for transforming raw biogas into valuable biomethane that can be used as fuel or transported through pipelines. Pressure swing adsorption (PSA) is one possible technique that can be used for upgrading. ZSM-5 with high silica/aluminum (Si/Al) ratio has a reasonable CO2/CH4 selectivity and an almost linear CO2 adsorption isotherm, which can reduce power consumption. Extrusion of zeolites uses Al-based binders which can result in a denaturation and in a decrease of Si/Al ratio, promoting a steeper CO2 isotherm and also impacting the water adsorption. In this work, we have extruded a ZSM-5 (with a Si/Al = 200) using only silica-based binder. Different samples were obtained using different extrusion paste compositions and operating conditions and their textural properties characterized. The mechanical strength of the samples as well as the CO2, CH4, and H2O adsorption equilibrium isotherms at 303–343 K were measured. Our results show that it is possible to produce extrudates with mechanical resistance comparable to (or higher than) commercial zeolite materials with surface area reductions lower than 10% and little or no impact on the CO2/CH4 selectivity.

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3D-printed SAPO-34 monoliths for gas separation

Cited by 107 publications

References 30 publications

Hierarchical Metal–Organic Frameworks with Macroporosity: Synthesis, Achievements, and Challenges

Hierarchical Metal–Organic Frameworks with Macroporosity: Synthesis, Achievements, and Challenges

Effect of substrate geometry and flow condition on the turbulence generation after a monolith

Extrusion and Characterization of High Si/Al Ratio ZSM-5 Using Silica Binder

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