A stable microporous framework with multiple accessible adsorption sites for high capacity adsorption and efficient separation of light hydrocarbons

Zhang, Xiaoxia; Guo, Xing-Zhe; Chen, Shui-Sheng; Kang, Hongwei; Zhao, Yue; Gao, Ji‐Xing; Xiong, Guang-Zu; Hou, Lei

doi:10.1016/j.cej.2023.143170

Cited by 18 publications

(8 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Obviously, the maximum gas adsorption capacities under 100 kPa follow the sequence, CO 2 > C 2 H 6 > C 3 H 8 , which should be because C 3 H 8 with the largest kinetic diameter (4.3–5.118 Å) accumulates less in the limited pore volume of 1a compared smaller C 2 H 6 (4.443 Å) and CO 2 (3.3 Å) molecules. Although the adsorption amount of CO 2 at 298 K and 1 atm is lower than some MOFs, such as ZJNU-19 (106.5 cm 3 g –1 ), Ni 2 (L) 2 (HCOO) 2 ·4H 2 O (71.6 cm 3 g –1 ), and ZJNU-88 (99.2 cm 3 g –1 ), it is still more than some MOFs, such as UPC-71 (8.7 cm 3 g –1 ), [Cu 4 (μ 4 -SO 4 )(tpt) 4 ]·[SO 4 ] (20.84 cm 3 g –1 ), and UPC-72 (17.7 cm 3 g –1 ) . Furthermore, cyclic gas sorption isotherms for CO 2 at 298 K have been measured (Figure S10).…”

Section: Resultsmentioning

confidence: 91%

Porous MOF Featuring 2D Intersecting Channels Based on a Pentanuclear Mn₅(COO)₁₀CO₃ Cluster with Upgrading of Pipeline Natural Gas

Li,

Wang,

Duan

et al. 2023

Inorg. Chem.

View full text Add to dashboard Cite

Natural gas plays a crucial role in daily and industrial production, but the impurities contained in natural gas limit its further use. It is very important to develop adsorbents that can separate CH4 from multicomponent mixtures, but there are still many challenges and problems. Herein, a novel porous MOF {[Mn5(pbdia)2(CO3)(H2O)2] ↔ 5H2O ↔ 2DMF} n (pbdia = 2,2’-(5-carboxy-1,3-phenylene)bis(oxy) diterephthalic acid) was successfully synthesized based on a flexible pentacarboxylic acid ligand and a unique pentanuclear Mn5(COO)10CO3 cluster. The MOF reveals a 3D porous structure with 2D intersecting channels, which shows high C3H8, C2H6, and CO2 adsorption capacities and affinities over CH4. Moreover, the ideal adsorption solution theory selectivities of C3H8/CH4, C2H6/CH4, and CO2/CH4 can reach 263.0, 27.0, and 7.7, respectively, suggesting a potential for removing the low content of C3H8, C2H6, and CO2 from pipeline natural gas, which was further confirmed by breakthrough curves and GCMC simulations.

show abstract

Section: Resultsmentioning

confidence: 91%

Porous MOF Featuring 2D Intersecting Channels Based on a Pentanuclear Mn₅(COO)₁₀CO₃ Cluster with Upgrading of Pipeline Natural Gas

Li,

Wang,

Duan

et al. 2023

Inorg. Chem.

View full text Add to dashboard Cite

show abstract

“…MOFs with small pores tend to have lower maximum adsorption capacities for C 3 H 8 but higher selectivity. For example, Ni 2 (L) 2 ((HCOO) 2 ·4H 2 O can adsorb 86.0 mL/g of C 3 H 8 at 298 K and 1 bar, but it exhibits a very high IAST selectivity toward C 3 H 8 /CH 4 (370.5). Notably, DMOF-TF demonstrates both a high gas uptake for C 3 H 8 and a considerable C 3 H 8 /CH 4 separation selectivity of 124.7 at 298 K, indicating its significant potential for the separation of light hydrocarbons.…”

Section: Resultsmentioning

confidence: 99%

Microporous Fluorinated MOF with Multiple Adsorption Sites for Efficient Recovery of C₂H₆ and C₃H₈ from Natural Gas

Yan,

Zheng,

Song

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Purifying C 2 H 6 /C 3 H 8 from a ternary natural gas mixture through adsorption separation is an important but challenging process in the petrochemical industry. To address this challenge, the industry is exploring effective strategies for designing high-performance adsorbents. In this study, we present two metal−organic frameworks (MOFs), DMOF-TF and DMOF-(CF 3 ) 2 , which have fluorinated pores obtained by substituting linker ligands in the host material. This pore engineering strategy not only provides suitable pore confinement but also enhances the adsorption capacities for C 2 H 6 /C 3 H 8 by providing additional binding sites. Theoretical calculations and transient breakthrough experiments show that the introduction of F atoms not only improves the efficiency of natural gas separation but also provides multiple adsorption sites for C 2 H 6 /C 3 H 8 −framework interactions.

show abstract

“…Specifically, whereas the C 3 H 8 /CH 4 (5:85) IAST selectivity for CMOM-7 exceeds that of MIL-100(Fe) (33.3), 37 MIL-101-Fe-NH 2 (42.5), 40 Zn-BPZ-SA (65.7), 38 Fe-pyz (89), 54 it is lower than that of MOF-303 (5114), 36 Ni(TMBDC)(DABDC) 0.5 (274), 34 CFA-1-NiCl 2 -2.3 (382.7), 55 and ZUL-C2 (741). 56 The C 3 H 8 /C 2 H 6 (1:1) IAST selectivity of CMOM-7 exceeds ECUT-Th-10 (9.31), 39 UiO-67 (∼9.5), 39 MFM-202a (∼7), 57 NIIC-20-Bu (10.4), 41 and Ni 2 (L) 2 (HCOO) 2 (H 2 O) 4 (L = 3-hydroxy-4-(4H-1,2,4-triazol-4-yl)benzoate) 58 but is lower than NIIC-20-Et (29.0), 41 NIIC-20-Pr (28.0), 41 and NIIC-20-Gl (25.2). 41 …”

Section: Methodsmentioning

confidence: 99%

Ultramicroporous Lonsdaleite Topology MOF with High Propane Uptake and Propane/Methane Selectivity for Propane Capture from Simulated Natural Gas

Deng,

Zhao,

Gao

et al. 2023

ACS Materials Lett.

View full text Add to dashboard Cite

Propane (C 3 H 8 ) is a widely used fuel gas. Metal− organic framework (MOF) physisorbents that are C 3 H 8 selective offer the potential to significantly reduce the energy footprint for capturing C 3 H 8 from natural gas, where C 3 H 8 is typically present as a minor component. Here we report the C 3 H 8 recovery performance of a previously unreported lonsdaleite, lon, topology MOF, a chiral metal−organic material, [Ni(S-IEDC)(bipy)(SCN)] n , CMOM-7. CMOM-7 was prepared from three low-cost precursors: Ni(SCN) 2 , Sindoline-2-carboxylic acid (S-IDECH), and 4,4′-bipyridine (bipy), and its structure was determined by single crystal Xray crystallography. Pure gas adsorption isotherms revealed that CMOM-7 exhibited high C 3 H 8 uptake (2.71 mmol g −1 ) at 0.05 bar, an indication of a higher affinity for C 3 H 8 than both C 2 H 6 and CH 4 . Dynamic column breakthrough experiments afforded high purity C 3 H 8 capture from a gas mixture comprising C 3 H 8 /C 2 H 6 /CH 4 (v/v/v = 5/10/85). Despite the dilute C 3 H 8 stream, CMOM-7 registered a high dynamic uptake of C 3 H 8 and a breakthrough time difference between C 3 H 8 and C 2 H 6 of 79.5 min g −1 , superior to those of previous MOF physisorbents studied under the same flow rate. Analysis of crystallographic data and Grand Canonical Monte Carlo simulations provides insight into the two C 3 H 8 binding sites in CMOM-7, both of which are driven by C−H•••π and hydrogen bonding interactions.

show abstract

A stable microporous framework with multiple accessible adsorption sites for high capacity adsorption and efficient separation of light hydrocarbons

Cited by 18 publications

References 60 publications

Porous MOF Featuring 2D Intersecting Channels Based on a Pentanuclear Mn₅(COO)₁₀CO₃ Cluster with Upgrading of Pipeline Natural Gas

Porous MOF Featuring 2D Intersecting Channels Based on a Pentanuclear Mn₅(COO)₁₀CO₃ Cluster with Upgrading of Pipeline Natural Gas

Microporous Fluorinated MOF with Multiple Adsorption Sites for Efficient Recovery of C₂H₆ and C₃H₈ from Natural Gas

Ultramicroporous Lonsdaleite Topology MOF with High Propane Uptake and Propane/Methane Selectivity for Propane Capture from Simulated Natural Gas

Contact Info

Product

Resources

About

A stable microporous framework with multiple accessible adsorption sites for high capacity adsorption and efficient separation of light hydrocarbons

Cited by 18 publications

References 60 publications

Porous MOF Featuring 2D Intersecting Channels Based on a Pentanuclear Mn5(COO)10CO3 Cluster with Upgrading of Pipeline Natural Gas

Porous MOF Featuring 2D Intersecting Channels Based on a Pentanuclear Mn5(COO)10CO3 Cluster with Upgrading of Pipeline Natural Gas

Microporous Fluorinated MOF with Multiple Adsorption Sites for Efficient Recovery of C2H6 and C3H8 from Natural Gas

Ultramicroporous Lonsdaleite Topology MOF with High Propane Uptake and Propane/Methane Selectivity for Propane Capture from Simulated Natural Gas

Contact Info

Product

Resources

About

Porous MOF Featuring 2D Intersecting Channels Based on a Pentanuclear Mn₅(COO)₁₀CO₃ Cluster with Upgrading of Pipeline Natural Gas

Porous MOF Featuring 2D Intersecting Channels Based on a Pentanuclear Mn₅(COO)₁₀CO₃ Cluster with Upgrading of Pipeline Natural Gas

Microporous Fluorinated MOF with Multiple Adsorption Sites for Efficient Recovery of C₂H₆ and C₃H₈ from Natural Gas