Separation of Amyl Alcohol Isomers in ZIF‐77

Bueno-Pérez, Rocío; Gutiérrez‐Sevillano, Juan José; Dubbeldam, David; Merkling, Patrick J.; Calero, Sofı́a

doi:10.1002/cphc.201500319

Cited by 8 publications

(6 citation statements)

References 20 publications

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“…These two isomers share the characteristic of possessing an exceptionally bulky and rigid environment around one of their carbon atoms: based on their heavy‐atom skeleton, they are the only isomers in the study that are dibranched on the same carbon atom. As a consequence, they cannot enter narrow channels or pores; this was previously observed in zeolitic imidazolate framework ZIF‐77.…”

Section: Resultsmentioning

confidence: 77%

Cadmium–BINOL Metal–Organic Framework for the Separation of Alcohol Isomers

Bueno-Pérez

Merkling

Gómez‐Álvarez

et al. 2016

Chemistry A European J

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The large‐scale isolation of specific isomers of amyl alcohols for applications in the chemical, pharmaceutical, and biochemical industries represents a challenging task due to the physicochemical similarities of these structural isomers. The homochiral metal–organic framework cadmium–BINOL (BINOL=1,1′‐bi‐2‐naphthol) is suitable for the separation of pentanol isomers, combining adsorption selectivities above 5 with adsorption capacities of around 4.5 mol kg−1. Additionally, a slight ability for separation of racemic mixtures of 2‐pentanol is also detected. This behavior is explained based on matching shapes, strength of host–guest interactions, and on the network of hydrogen bonds. The last of these explains both the relative success and shortfalls of prediction methods at high loadings (ideal adsorbed solution theory) or at low coverage (separation factors), which are therefore useful here at a qualitative level, but not accurate in quantitative terms. Finally, the high selectivity of cadmium–BINOL for 1‐pentanol over its isomers offers prospects for practical applications and some room for optimizing conditions.

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Section: Resultsmentioning

confidence: 77%

Cadmium–BINOL Metal–Organic Framework for the Separation of Alcohol Isomers

Bueno-Pérez

Merkling

Gómez‐Álvarez

et al. 2016

Chemistry A European J

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“…Figure shows the vapor phase adsorption isotherms of the main ABE fermentation products on the 3D-printed ZIF-8 monoliths. The isotherms of acetone, n- butanol, and ethanol show a distinct type-V shape (i.e., sigmoidal shape), which is consistent with previously published data on pure ZIF-8 powder. − This shows that the fundamental adsorption mechanism of these components on ZIF-8 are well-retained after shaping the MOF powder into monoliths via 3D-printing.…”

Section: Resultsmentioning

confidence: 99%

3D-Printed ZIF-8 Monoliths for Biobutanol Recovery

Claessens

Dubois

Lefevere

et al. 2020

Ind. Eng. Chem. Res.

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We report the use of 3D-printed ZIF-8 adsorbent monoliths for the recovery of biobutanol from model fermentation mixtures. Two ZIF-8 monoliths, obtained by layer-by-layer printing, with different fiber thickness (250 and 600 μm), front channel size (350 μm × 350 μm and 760 μm × 760 μm), and side channel size (<60 and 260 μm) were studied. Equilibrium isotherms of acetone−butanol−ethanol (ABE) fermentation products showed that both monoliths retained a high saturation capacity (0.2 g/g) for n-butanol and a low saturation capacity for water (0.04 g/g). Mixture breakthrough experiments demonstrate that a high amount of butanol is adsorbed (0.2 g/g) in dynamic conditions, close to the pure component capacity. When increasing the carrier gas flow rate, broadening of the n-butanol breakthrough profile was observed for the 250 μm fiber monolith, while no broadening of the profile was observed for the 600 μm fiber monolith. Computational fluid dynamics (CFD) simulations show that the small side channels of the 250 μm monolith (<60 μm) leads to maldistribution of the flow at the inlet. Finally, the thermal regeneration of the monoliths was investigated, showing the capacity of the ZIF-8 monoliths could be fully restored for different adsorption−desorption cycles.

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“…Reactive adsorption of biochemicals using novel solid sorbents is an alternative to reactive extraction that has been used by us and others (82)(83)(84)(85). The key properties of any viable solid sorbent-although often quite system specific-generally include high and/or tunable surface area for accommodating large capacities of sorbate, high selectivity to the specific chemical, and high working capacity.…”

Section: Adsorbent-based Separationmentioning

confidence: 99%

A Review of Biorefinery Separations for Bioproduct Production via Thermocatalytic Processing

Nguyen

DeJaco

Mittal

et al. 2017

Annu. Rev. Chem. Biomol. Eng.

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With technological advancement of thermocatalytic processes for valorizing renewable biomass carbon, development of effective separation technologies for selective recovery of bioproducts from complex reaction media and their purification becomes essential. The high thermal sensitivity of biomass intermediates and their low volatility and high reactivity, along with the use of dilute solutions, make the bioproducts separations energy intensive and expensive. Novel separation techniques, including solvent extraction in biphasic systems and reactive adsorption using zeolite and carbon sorbents, membranes, and chromatography, have been developed. In parallel with experimental efforts, multiscale simulations have been reported for predicting solvent selection and adsorption separation. We discuss various separations that are potentially valuable to future biorefineries and the factors controlling separation performance. Particular emphasis is given to current gaps and opportunities for future development.

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Separation of Amyl Alcohol Isomers in ZIF‐77

Cited by 8 publications

References 20 publications

Cadmium–BINOL Metal–Organic Framework for the Separation of Alcohol Isomers

Cadmium–BINOL Metal–Organic Framework for the Separation of Alcohol Isomers

3D-Printed ZIF-8 Monoliths for Biobutanol Recovery

A Review of Biorefinery Separations for Bioproduct Production via Thermocatalytic Processing

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