Kinetic separation of carbon dioxide and methane on a copper metal–organic framework

Bao, Zongbi; Alnemrat, Sufian; Yu, Leshu; Vasiliev, Igor; Ren, Qilong; Lü, Xiuyang; Deng, Shuguang

doi:10.1016/j.jcis.2011.01.103

Cited by 102 publications

(54 citation statements)

References 32 publications

(44 reference statements)

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“…Values of D L , ξ 0 , ξ 1 , ξ 2 , and ξ 3 , calculated according to Eqs. (8)(9)(10)(11)(12) are summarized in Table 5. Among the mass transfer resistances, the experimental values of ξ 1 is the smallest, revealing that the macropore and micropore diffusions are the major contributors of the lumped mass transfer resistance.…”

Section: Dynamic Quantities Of N 2 Ch 4 and Co 2 Adsorption On Al-bdcmentioning

confidence: 99%

“…Obviously, finding a satisfactory adsorbent that can be used to separate the CO 2 and N 2 from CH 4 with high-efficiency has been a critical issue for the unconventional natural gas upgrading. Considerable research efforts have been carried out to identify and to develop an applicable adsorbent with high adsorption selectivity and capacity for NG treating, including advanced zeolites materials, carbon-based materials, and metal-organic frameworks (MOFs) (2,(7)(8)(9). However, the separation efficiency of the conventional adsorbents cannot meet the requirements for CH 4 /N 2 or CH 4 /CO 2 separation, because the higher polarizability of molecular sieves and the chaotic pores of activated carbons (AC) weaken their separation efficiency greatly (1,2,5,7).…”

Section: Introductionmentioning

confidence: 99%

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Experimental Evaluation of the Adsorption, Diffusion, and Separation of CH₄/N₂and CH₄/CO₂Mixtures on Al-BDC MOF

Sun

Ren

et al. 2014

Separation Science and Technology

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Adsorption equilibrium, thermodynamics, and kinetics of CH 4 , N 2 , and CO 2 were investigated by volumetric-chromatographic and inverse gas chromatographic (IGC) methods on the Al-BDC MOF. The binary adsorption data from the volumetric-chromatographic experiments represents that the Al-BDC MOF has a high CO 2 /CH 4 selectivity ca. 11 and a CH 4 /N 2 selectivity ca. 4.3 at 303 K, and appears to be a good candidate for the CH 4 separation. The initial adsorption heats of CH 4 , N 2 , and CO 2 on the Al-BDC MOF were determined to be 15.3, 11.5, and 32.2 kJmol −1 by IGC method, respectively. Moreover, the micropore diffusivities of N 2 , CH 4 and CO 2 in the Al-BDC MOF at 303 K were also estimated to be 1.58 × 10 −7 cm 2 /s, 7.04 × 10 −8 cm 2 /s, and 3.95 × 10 −9 cm 2 /s, respectively. The results indicate that micropores play a crucial role in the adsorptive separation of the CH 4 /N 2 and CH 4 /CO 2 mixtures, and the IGC method is a validity manner to estimate the thermodynamic and kinetic parameters of MOF adsorbents.

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Section: Dynamic Quantities Of N 2 Ch 4 and Co 2 Adsorption On Al-bdcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of the Adsorption, Diffusion, and Separation of CH₄/N₂and CH₄/CO₂Mixtures on Al-BDC MOF

Sun

Ren

et al. 2014

Separation Science and Technology

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“…21,22 As a result, MOFs are highly attractive components for advanced structures and functionalized materials for applications including catalysis, 23,24 drug delivery, 25,26 sensing, 27 and gas separation. [28][29][30][31][32][33][34] As an outstanding alternative for gas separation, MOFs, as well as functionalized MOFs by post-synthetic modification, have been tentatively utilized for removal of C 2 H 2 from C 2 H 4 . Yang et al 35 have reported NOTT-300 having supramolecular interactions with hydrocarbons reaching a rather high C 2 H 2 uptake of 6.34 mmol/g, but its selectivity for C 2 H 2 and C 2 H 4 was only 2.30 at 1.0 bar far away from the requirement for industrial production.…”

Section: Introductionmentioning

confidence: 99%

Efficient adsorption separation of acetylene and ethylene via supported ionic liquid on metal‐organic framework

et al. 2016

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Ionic liquid (IL) supported metal‐organic framework (MOF) was utilized to efficiently separate acetylene from ethylene. A common IL, 1‐butyl‐3‐methylimidazolium acetate ([Bmim][OAc]), was encapsulated into a hydrothermally stable MOF, namely MIL‐101(Cr). Characterization techniques including FTIR, Powder X‐ray diffraction, BET, and thermal gravimetric analysis were used to confirm successful encapsulation of the IL within MIL‐101(Cr). Adsorption isotherms of acetylene and ethylene in the IL‐encapsulated MOF were tested. From the results, the MOF composite retained a relatively high adsorption capacity. Remarkably, the adsorption selectivity of acetylene/ethylene has dramatically increased from 3.0 to 30 in comparison with the parent MIL‐101(Cr). Furthermore, the potential of industrial practice was examined by breakthrough and regeneration experiments. It not only satisfies the industrial production of removal of low level of acetylene from ethylene, but also is notably stable during the adsorption‐desorption process. The high designability of ILs combined with richness of MOFs’ structures exploits a novel blueprint for gas separation. © 2016 American Institute of Chemical Engineers AIChE J, 63: 2165–2175, 2017

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“…Up to now, only very few frameworks have been imaged in their integral form, such as the MIL (Matériaux de l'Institut Lavoisier) family, with the framework pores determined using a conventional apparatus functioning at 200 kV acceleration voltage furnished by a LaB6 gun. A severe challenge is the uncertainty of MOFs below the electron beam, with their long‐range order destroyed after a few seconds of illumination by the electron beam. The TEM images of Cu‐BTC and hybrid MWCNTs@Cu‐BTC are presented in Figures and , which show that the porous host structure is still intact after loading and short exposure to air (~10 min).…”

Section: Resultsmentioning

confidence: 99%

The Role of Multiwall Carbon Nanotubes in Cu‐BTC Metal‐Organic Frameworks for CO₂ Adsorption

Ullah

Shariff

Bustam

et al. 2016

J Chinese Chemical Soc

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The discovery of natural gas fields with a high content of CO2 in world gas reservoirs poses new challenges for CO2 capture. This work investigates the use of the metal‐organic framework (MOF) Cu‐BTC and hybrid MWCNTs@Cu‐BTC for CO2 adsorption. Cu‐BTC and hybrid MWCNTs@Cu‐BTC were synthesized by the solvothermal method. The results of imaging of intact MOF pores in Cu‐BTC and hybrid MWCNTs@Cu‐BTC nanocrystals by high‐resolution transmission electron microscopy (HRTEM) under liquid nitrogen conditions are presented. Physical characterizations of the solid adsorbents were made by using a selection of different techniques, including field‐emission scanning electron microscopy (FESEM), X‐ray powder diffraction (XRD), Fourier transform infrared (FT‐IR) spectroscopy, thermogravimetric analysis (TGA), Brunauer–Emmet–Teller (BET) surface area, and CO2 adsorption and physisorption measurements. HRTEM and FESEM confirmed that Cu‐BTC has an octahedral shape and that the surface morphology of Cu‐BTC changes by the intercalation of MWCTNs. The results show that the modified Cu‐BTC improved the CO2 adsorption compared to pure Cu‐BTC. The increase in the CO2 uptake capabilities of hybrid MWCNTs@Cu‐BTC was ascribed to the intercalation of MWCNTs with Cu‐BTC crystals. The CO2 sorption capacities of Cu‐BTC and hybrid MWCNTs@Cu‐BTC were found to increase from 1.91701 to 3.25642 mmol/g at ambient conditions.

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Kinetic separation of carbon dioxide and methane on a copper metal–organic framework

Cited by 102 publications

References 32 publications

Experimental Evaluation of the Adsorption, Diffusion, and Separation of CH₄/N₂and CH₄/CO₂Mixtures on Al-BDC MOF

Experimental Evaluation of the Adsorption, Diffusion, and Separation of CH₄/N₂and CH₄/CO₂Mixtures on Al-BDC MOF

Efficient adsorption separation of acetylene and ethylene via supported ionic liquid on metal‐organic framework

The Role of Multiwall Carbon Nanotubes in Cu‐BTC Metal‐Organic Frameworks for CO₂ Adsorption

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Kinetic separation of carbon dioxide and methane on a copper metal–organic framework

Cited by 102 publications

References 32 publications

Experimental Evaluation of the Adsorption, Diffusion, and Separation of CH4/N2and CH4/CO2Mixtures on Al-BDC MOF

Experimental Evaluation of the Adsorption, Diffusion, and Separation of CH4/N2and CH4/CO2Mixtures on Al-BDC MOF

Efficient adsorption separation of acetylene and ethylene via supported ionic liquid on metal‐organic framework

The Role of Multiwall Carbon Nanotubes in Cu‐BTC Metal‐Organic Frameworks for CO2 Adsorption

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Product

Resources

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Experimental Evaluation of the Adsorption, Diffusion, and Separation of CH₄/N₂and CH₄/CO₂Mixtures on Al-BDC MOF

Experimental Evaluation of the Adsorption, Diffusion, and Separation of CH₄/N₂and CH₄/CO₂Mixtures on Al-BDC MOF

The Role of Multiwall Carbon Nanotubes in Cu‐BTC Metal‐Organic Frameworks for CO₂ Adsorption