Molecular sieving of ethylene from ethane using a rigid metal–organic framework

Lin, Rui‐Biao; Li, Libo; Zhou, Huijuan; Wu, Hui; He, Cong; Li, Shun; Krishna, Rajamani; Li, Jinping; Zhou, Wei; Chen, Banglin

doi:10.1038/s41563-018-0206-2

Cited by 589 publications

(388 citation statements)

References 42 publications

Supporting

Mentioning

376

Contrasting

Unclassified

Order By: Relevance

“…This difference in diffusion rates may be exploited for separation if the pore sizes of adsorbents can be carefully engineered. In the extreme scenario, ethane cannot diffuse through the pores due to steric hindrance while ethylene can still access the pores …”

Section: General Strategies To Separate Light Olefins and Paraffinsmentioning

confidence: 99%

“…These features along with the breakthrough experiments demonstrate the huge potential of Mg‐gallate for practical application . Another recently reported MOF for steric separation of C 2 H 4 from C 2 H 6 is UTSA‐280 reported by Lin et al The rotation of ligand C 4 O 4 2− in this MOF is constrained by the coordination bonds between oxygens from the ligand and Ca 2+ , leading to rigid cylindrical channels with the aperture size of 3.2 × 4.5 and 3.8 × 3.8 Å 2 (Figure b,d). These narrow channels, like those in M‐gallate, serve as the checkpoints to stop bulkier C 2 H 6 molecules from diffusing into the pores, leading to excellent C 2 H 4 adsorption selectivity over C 2 H 6 in UTSA‐280.…”

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

confidence: 99%

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

confidence: 99%

See 2 more Smart Citations

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

Wang

Peh

Zhao

2019

Small

212

139

View full text Add to dashboard Cite

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.

show abstract

Section: General Strategies To Separate Light Olefins and Paraffinsmentioning

confidence: 99%

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

confidence: 99%

See 1 more Smart Citation

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

Wang

Peh

Zhao

2019

Small

212

139

View full text Add to dashboard Cite

show abstract

“…Compared with energy‐intensive cryogenic distillation, adsorptive separation has been proposed as a cost‐efficient and energy‐saving alternative/supplementary technology . In recent years, metal–organic frameworks (MOFs), as a novel class of customizable porous solid materials, have been intensively studied for ethylene/ethane separation, due to their extraordinarily high porosities, tunable pore environments, and modifiable functionality …”

Section: Introductionmentioning

confidence: 99%

Moisture stability of ethane‐selective Ni(II), Fe(III), Zr(IV)‐based metal–organic frameworks

Chen

et al. 2019

AIChE Journal

View full text Add to dashboard Cite

Metal-organic frameworks (MOFs) combined with selective adsorption capacity of ethane over ethylene and good moisture stability are highly urged by adsorption industrial community. Here, the moisture stability mechanism of Zr-bptc, UiO-66, PCN-245, and Ni(bdc)(ted) 0.5 were investigated by moisture stability experiments, and computational simulation of metal node-linker breaking energy caused by water.Results show that the moisture stability follows the order of Zr-bptc > UiO-66 > PCN-245 > Ni(bdc)(ted) 0.5 . The different moisture stability for these MOFs is likely attributed to the bond strength between metal center and ligands, the coordination number of metal center, the hydrophobicity of framework, as well as the degree of interpenetrated framework. Additionally, comparing with ethyleneselective MOFs, ethane-selective MOFs have fewer coordinatively unsaturated metal sites. Breakthrough experiments indicated that Zr-bptc is the promising material for ethane/ethylene separation. K E Y W O R D S adsorption, ethane-selective MOFs, ethylene/ethane separation, moisture stability, Zr-bptc

show abstract

“…However, the use of traditional porous materials,s uch as zeolites, [5,6] and activated carbon [7] to separate ternary propyne/propadiene/ propylene gas mixtures has not been realized yet, possibly because of the similar physical properties,s tructure,a nd molecular sizes of propyne,p ropadiene,a nd propylene (Scheme 1). [9][10][11][12][13] Much effort has been devoted to the use of MOFs for the separation of binary gas mixtures, such as acetylene/ethylene, [14][15][16][17][18][19] ethylene/ethane, [14,[20][21][22] carbon dioxide/methane, [23,24] carbon dioxide/nitrogen, [25,26] acetylene/carbon dioxide, [27,28] krypton/xenon, [29] propyne/ propylene, [30,31] and propylene/propane. monotonous structure,l ack of specific binding sites) owing to their welldefined structure,f ine-tunable pore size,a nd customdesigned functional groups.…”

mentioning

confidence: 99%

Robust Microporous Metal–Organic Frameworks for Highly Efficient and Simultaneous Removal of Propyne and Propadiene from Propylene

Peng

Pham

et al. 2019

Angew Chem Int Ed

Self Cite

View full text Add to dashboard Cite

Simultaneous removal of trace amounts of propyne and propadiene from propylene is an important but challenging industrial process.W ereport herein aclass of microporous metal-organic frameworks (NKMOF-1-M)w ith exceptional water stability and remarkably high uptakes for both propyne and propadiene at lowp ressures. NKMOF-1-M separated at ernary propyne/propadiene/propylene (0.5 :0.5 :99.0) mixture with the highest reported selectivity for the production of polymer-grade propylene (99.996 %) at ambient temperature, as attributed to its strong binding affinity for propyne and propadiene over propylene.Moreover,wewere able to visualizep ropyne and propadiene molecules in the single-crystal structure of NKMOF-1-M through ac onvenient approach under ambient conditions,w hich helped to precisely understand the binding sites and affinity for propyne and propadiene.T hese results provide important guidance on using ultramicroporous MOFs as physisorbent materials.

show abstract

Molecular sieving of ethylene from ethane using a rigid metal–organic framework

Cited by 589 publications

References 42 publications

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

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

Moisture stability of ethane‐selective Ni(II), Fe(III), Zr(IV)‐based metal–organic frameworks

Robust Microporous Metal–Organic Frameworks for Highly Efficient and Simultaneous Removal of Propyne and Propadiene from Propylene

Contact Info

Product

Resources

About