Tuning ethylene gas adsorption via metal node modulation: Cu-MOF-74 for a high ethylene deliverable capacity

Liao, Yijun; Zhang, Lin; Weston, Mitchell H.; Morris, William; Hupp, Joseph T.; Farha, Omar K.

doi:10.1039/c7cc04160h

Cited by 65 publications

(55 citation statements)

References 37 publications

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“…It can be seen that the XRD pattern of Cu/Fe-MOF-74m aintains the primary peaks of MOF-74 at around6 .8 and 11.88,c orrespondingt o[ 210] and [300] planeso fM OF-74 crystal, which confirmst hat Cu/Fe-MOF-74 has been synthesized successfully. [22][23][24] The XRD spectra of the prepared FeCu@C-800 shown in Figure3Ad isplays peaks located at 43.5, 50.8, and 74.78.T he Scheme1.Schematicrepresentation of the process for preparation of FeCu@C-800 and FeCu@C-N. diffractionp eak positions of alloy in FeCu@C-800 are not much differentf rom pure Cu (PDF#04-0836) and they are attributed to the (111), (200), and (220) diffractions of metallic copper, respectively.T his indicates that Cu-Fe alloy nanoparticles still maintain the crystal structure of Cu. This is mainly because the atomic radius of iron atom is similart ot hat of copper atom and the lattice parameters of the Cu are unchanged when a part of coppera toms in the lattice are replaced by iron atoms.…”

Section: Resultsmentioning

confidence: 99%

Pyrolytic Carbon‐coated Cu‐Fe Alloy Nanoparticles with High Catalytic Performance for Oxygen Electroreduction

Qiao

Kong

et al. 2019

Chemistry An Asian Journal

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Well-dispersed carbon-coated or nitrogen-doped carbon-coated copper-iron alloy nanoparticles (FeCu@Co r FeCu@CÀN) in carbon-based supports are obtained using a bimetallic metal-organic framework (Cu/Fe-MOF-74)o ra mixture of Cu/Fe-MOF-74 and melamine as sacrificial templates and an active-component precursor by using apyrolysis method.T he investigation resultsa ttest formation of CuÀ Fe alloy nanoparticles. The obtained FeCu@Cc atalyst exhibits ac atalytic activity with ah alf-wave potential of 0.83 Vf or oxygen reduction reaction (ORR) in alkalinem edium, comparable to that on commercial Pt/C catalyst (0.84 V).T he cata-lytic activity of FeCu@CÀNf or ORR (E half-wave = 0.87 V) outshinesa ll reported analogues. The excellent performance of FeCu@CÀNs hould be attributedt oachange in the energy of the d-band center of Cu resulting from the formationo f the copper-iron alloy,t he interaction between alloy nanoparticlesa nd supports and N-dopingi nt he carbon matrix. Moreover,F eCu@C and FeCu@CÀNs how better electrochemicals tability and methanol tolerance than commercial Pt/C and are expected to be widely used in practical applications.

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Section: Resultsmentioning

confidence: 99%

Pyrolytic Carbon‐coated Cu‐Fe Alloy Nanoparticles with High Catalytic Performance for Oxygen Electroreduction

Qiao

Kong

et al. 2019

Chemistry An Asian Journal

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“…Although the MOF‐74 family has outstanding adsorption selectivity toward olefin over paraffin as well as excellent gas adsorption capacity, the strong interaction between olefin and the UMS leads to rectangular sorption isotherms that are unfavorable for gas desorption during regeneration processes. Liao et al reported the dependence of ethylene adsorption in MOF‐74 on different metal constituents . It was found that Cu‐MOF‐74 exhibits a much more gradual increase in the ethylene uptake with rising pressure compared to other MOF‐74 counterparts.…”

Section: Metal–organic Framework For Adsorptive Light Olefin/paraffimentioning

confidence: 91%

“…The ethylene deliverable capacity, defined as the gas uptake difference between 100 mbar and 1 bar, is 3.6 ± 0.2 mmol g −1 for Cu‐MOF‐74, which is the highest among all the MOFs being studied in this work. The relatively weak binding of C 2 H 4 to Cu‐MOF‐74 was attributed to the Jahn–Teller distortion of the Cu coordination geometry . In order to examine if MOF‐74 is suitable for practical gas separation application, Mg‐MOF‐74 was synthesized and shaped into extrudates as the adsorbent for adsorptive ethylene/ethane separation .…”

Section: Metal–organic Framework For Adsorptive Light Olefin/paraffimentioning

confidence: 99%

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

Wang

Peh

Zhao

2019

Small

220

139

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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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“…The synthesis of HKUST and a series of MMOF-74 (where M = Mg 2+ , Zn 2+ , Co 2+ , or Ni 2+ ) was adapted from the work of Omar Farha's group [30], affording gram-scale amounts of the target materials. Scaling up of MOFs synthesis often leads to the formation of undesired phases.…”

Section: Mof Synthesismentioning

confidence: 99%

Easy Processing of Metal–Organic Frameworks into Pellets and Membranes

et al. 2020

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Herein, we present a simple and inexpensive method for the immobilization of Metal–Organic Framework (MOF) particles in the form of pellets and membranes. This processing procedure is possible using polymethacrylate polymer (PMMA) as a binding or coating agent, improving stability and significantly increasing the water repellency. HKUST and MMOF-74 (M = Mg2+, Zn2+, Co2+ or Ni2+) are stable with the processing and high loadings of MOF materials into the processed pellet or membranes. These methods can provide the know-how for the immobilization of MOFs for, for example, application in air purification and the removal of toxic compounds and are well-suited for deployment in air purification devices.

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Tuning ethylene gas adsorption via metal node modulation: Cu-MOF-74 for a high ethylene deliverable capacity

Cited by 65 publications

References 37 publications

Pyrolytic Carbon‐coated Cu‐Fe Alloy Nanoparticles with High Catalytic Performance for Oxygen Electroreduction

Pyrolytic Carbon‐coated Cu‐Fe Alloy Nanoparticles with High Catalytic Performance for Oxygen Electroreduction

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

Easy Processing of Metal–Organic Frameworks into Pellets and Membranes

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