Absolute Molecular Sieve Separation of Ethylene/Ethane Mixtures with Silver Zeolite A

Aguado, Sónia; Bergeret, G.; Daniel, Cécile; Farrusseng, David

doi:10.1021/ja305663k

Cited by 207 publications

(127 citation statements)

References 19 publications

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“…Clearly, the pore limiting size (for the access of guest gas molecule into the MOF crystal) is 3.96 Å, while the largest cavity within the channel is 4.6 Å in diameter. Note that the empirical kinetic diameters of C 2 H 2 /C 2 H 4 are ∼3.3/4.2 Å (3.32 × 3.34 × 5.70 Å 3 for C 2 H 2 versus 3.28 × 4.18 × 4.84 Å 3 for C 2 H 4 ), respectively46474849. For ethylene, its kinetic diameter is slightly larger than the channel pore opening of UTSA-100a, and much larger than the interchannel window size.…”

Section: Resultsmentioning

confidence: 99%

Microporous metal–organic framework with dual functionalities for highly efficient removal of acetylene from ethylene/acetylene mixtures

et al. 2015

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The removal of acetylene from ethylene/acetylene mixtures containing 1% acetylene is a technologically very important, but highly challenging task. Current removal approaches include the partial hydrogenation over a noble metal catalyst and the solvent extraction of cracked olefins, both of which are cost and energy consumptive. Here we report a microporous metal–organic framework in which the suitable pore/cage spaces preferentially take up much more acetylene than ethylene while the functional amine groups on the pore/cage surfaces further enforce their interactions with acetylene molecules, leading to its superior performance for this separation. The single X-ray diffraction studies, temperature dependent gas sorption isotherms, simulated and experimental column breakthrough curves and molecular simulation studies collaboratively support the claim, underlying the potential of this material for the industrial usage of the removal of acetylene from ethylene/acetylene mixtures containing 1% acetylene at room temperature through the cost- and energy-efficient adsorption separation process.

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Section: Resultsmentioning

confidence: 99%

Microporous metal–organic framework with dual functionalities for highly efficient removal of acetylene from ethylene/acetylene mixtures

et al. 2015

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“…In earlier works numerous researchers have reported the adsorption equilibrium and kinetics of ethane, ethylene and their mixtures on various adsorbents with different adsorption mechanisms. The most studied adsorbents are: activated carbons [11], zeolites [12][13][14][15][16], -complexation based adsorbents [17][18][19][20][21][22][23], and CMS [24]. Table S1 in the Supporting Information shows a concise summary of the main results obtained on these studies.…”

Section: Introductionmentioning

confidence: 99%

Ethane/ethylene separation on a copper benzene-1,3,5-tricarboxylate MOF

Martins

Ribeiro

Ferreira

et al. 2015

Separation and Purification Technology

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“…It was demonstrated that some degree of weak π‐complexation exists between Ag + and N 2 , resulting in high N 2 /O 2 selectivity at low pressure and impeded N 2 desorption. Aguado et al further investigated the ethylene/ethane separation performance in AgX . Although the ethylene uptake capacity does not change much, the interaction between AgX and ethylene is intensified as indicated by the steep isotherm and elevated heat of adsorption with respect to NaX …”

Section: Zeolites For Adsorptive Light Olefin/paraffin Separationsmentioning

confidence: 92%

Alternatives to Cryogenic Distillation: Advanced Porous Materials in Adsorptive Light Olefin/Paraffin Separations

Wang

Peh

Zhao

2019

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As primary feedstocks in the petrochemical industry, light olefins such as ethylene and propylene are mainly obtained from steam cracking of naphtha and short chain alkanes (ethane and propane). Due to their similar physical properties, the separations of olefins and paraffins—pivotal processes to meet the olefin purity requirement of downstream processing—are typically performed by highly energy‐intensive cryogenic distillation at low temperatures and high pressures. To reduce the energy input and save costs, adsorptive olefin/paraffin separations have been proposed as promising techniques to complement or even replace cryogenic distillation, and growing efforts have been devoted to developing advanced adsorbents to fulfill this challenging task. In this Review, a holistic view of olefin/paraffin separations is first provided by summarizing how different processes have been established to leverage the differences between olefins and paraffins for effective separations. Subsequently, recent advances in the development of porous materials for adsorptive olefin/paraffin separations are highlighted with an emphasis on different separation mechanisms. Last, a perspective on possible directions to push the limit of the research in this field is presented.

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Absolute Molecular Sieve Separation of Ethylene/Ethane Mixtures with Silver Zeolite A

Abstract: Absolute ethylene/ethane separation is achieved by ethane exclusion on silver-exchanged zeolite A adsorbent. This molecular sieving type separation is attributed to the pore size of the adsorbent, which falls between ethylene and ethane kinetic diameters.

Cited by 207 publications

References 19 publications

Microporous metal–organic framework with dual functionalities for highly efficient removal of acetylene from ethylene/acetylene mixtures

Microporous metal–organic framework with dual functionalities for highly efficient removal of acetylene from ethylene/acetylene mixtures

Ethane/ethylene separation on a copper benzene-1,3,5-tricarboxylate MOF

Alternatives to Cryogenic Distillation: Advanced Porous Materials in Adsorptive Light Olefin/Paraffin Separations

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