scholarly journals Gram-Scale Synthesis of an Ultrastable Microporous Metal-Organic Framework for Efficient Adsorptive Separation of C2H2/CO2 and C2H2/CH4

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5121
Author(s):  
Nuo Xu ◽  
Yunjia Jiang ◽  
Wanqi Sun ◽  
Jiahao Li ◽  
Lingyao Wang ◽  
...  
Keyword(s):  
Large Scale ◽  
Metal Organic Framework ◽  
Separation Performance ◽  
Solution Theory ◽  
Ambient Conditions ◽  
Efficient Separation ◽  
Pyridinedicarboxylic Acid ◽  
Metal Organic ◽  
Breakthrough Experiments ◽  
Organic Framework

A highly water and thermally stable metal-organic framework (MOF) Zn2(Pydc)(Ata)2 (1, H2Pydc = 3,5-pyridinedicarboxylic acid; HAta = 3-amino-1,2,4-triazole) was synthesized on a large scale using inexpensive commercially available ligands for efficient separation of C2H2 from CH4 and CO2. Compound 1 could take up 47.2 mL/g of C2H2 under ambient conditions but only 33.0 mL/g of CO2 and 19.1 mL/g of CH4. The calculated ideal absorbed solution theory (IAST) selectivities for equimolar C2H2/CO2 and C2H2/CH4 were 5.1 and 21.5, respectively, comparable to those many popular MOFs. The Qst values for C2H2, CO2, and CH4 at a near-zero loading in 1 were 43.1, 32.1, and 22.5 kJ mol−1, respectively. The practical separation performance for C2H2/CO2 mixtures was further confirmed by column breakthrough experiments.

scholarly journals Exploiting equilibrium-kinetic synergetic effect for separation of ethylene and ethane in a microporous metal-organic framework

2020 ◽  
Vol 6 (15) ◽  
pp. eaaz4322 ◽  
Author(s):  
Qi Ding ◽  
Zhaoqiang Zhang ◽  
Cong Yu ◽  
Peixin Zhang ◽  
Jun Wang ◽  
...  
Keyword(s):  
Performance Enhancement ◽  
Metal Organic Framework ◽  
Synergetic Effect ◽  
Adsorption Heat ◽  
Separation Performance ◽  
Separation Mechanism ◽  
Physiochemical Properties ◽  
Metal Organic ◽  
Breakthrough Experiments ◽  
Organic Framework

Physisorption is a promising technology to cut cost for separating ethylene (C2H4) from ethane (C2H6), the most energy-intensive separation process in the petrochemical industry. However, traditional thermodynamically selective adsorbents exhibit limited C2H4/C2H6 selectivity due to their similar physiochemical properties, and the performance enhancement is typically at the expense of elevated adsorption heat. Here, we report highly-efficient C2H4/C2H6 adsorption separation in a phosphate-anion pillared metal-organic framework ZnAtzPO4 exploiting the equilibrium-kinetic synergetic effect. The periodically expanded and contracted aperture decorated with electronegative groups within ZnAtzPO4 enables effective trapping of C2H4 and impedes the diffusion of C2H6, offering an extraordinary equilibrium-kinetic combined selectivity of 32.4. The adsorption heat of C2H4 on ZnAtzPO4 (17.3 to 30.0 kJ mol−1) is substantially lower than many thermodynamically selective adsorbents because its separation capability only partially relies on thermodynamics. The separation mechanism was explored by computational simulations, and breakthrough experiments confirmed the excellent C2H4/C2H6 separation performance of ZnAtzPO4.

scholarly journals Efficient separation of 1,3-butadiene from C4 hydrocarbons by flexible metal-organic framework with gate-opening effect

2021 ◽  
Author(s):  
Wang Lu ◽  
Hongliang Huang ◽  
Zhu Hejin ◽  
Chang Yanjiao ◽  
Guo Xiangyu ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Regeneration Ability ◽  
Water Stability ◽  
Separation Processes ◽  
Efficient Separation ◽  
Gate Opening ◽  
Metal Organic ◽  
Flexible Metal ◽  
Breakthrough Experiments ◽  
Organic Framework

Efficient and economical separation of 1,3-butadiene (C4H6) from C4 hydrocarbons is imperative yet challenging in industrial separation processes. Herein, a guest-induced flexible Mn-bpdc MOF has been employed to separate C4H6 from C4 hydrocarbons, including n-butene (n-C4H8), iso-butene (iso-C4H8), n-butane (n-C4H10) and iso-butane (iso-C4H10). Significantly, C4H6 can instantaneously induce gate-opening of Mn-bpdc MOF at 0.13 bar and 298 K, thus significant amounts of C4H6 can be adsorbed, while other C4 hydrocarbons cannot induce the gate-opening even at 1 bar. The uptake selectivities of Mn-bpdc MOF for C4H6/n-C4H8 and C4H6/iso-C4H8 are up to 40.0 and 45.0 at 298 K and 1 bar, respectively, both surpassing all the reported adsorbents. In addition, breakthrough experiments verified that C4H6/n-C4H8, C4H6/iso-C4H8, C4H6/n-C4H10 and C4H6/iso-C4H10 mixture can be efficiently separated. More importantly, Mn-bpdc possesses excellent water stability and outstanding regeneration ability for C4H6 separation, making it a new benchmark for C4H6 purification.

A highly stable MOF with a rod SBU and a tetracarboxylate linker: unusual topology and CO2adsorption behaviour under ambient conditions

2014 ◽  
Vol 50 (31) ◽  
pp. 4047-4049 ◽  
Author(s):  
Ru-Jin Li ◽  
Mian Li ◽  
Xiao-Ping Zhou ◽  
Dan Li ◽  
Michael O'Keeffe
Keyword(s):  
Gas Adsorption ◽  
Metal Organic Framework ◽  
Solution Theory ◽  
Ambient Conditions ◽  
Ideal Adsorbed Solution Theory ◽  
Metal Organic ◽  
Adsorbed Solution ◽  
Adsorbed Solution Theory ◽  
Organic Framework

A Mn-based rod metal–organic framework (MOF), ROD-6, with a new lrk net is synthesized and studied with Ideal Adsorbed Solution Theory (IAST) for selective gas adsorption.

A novel anion-pillared metal–organic framework for highly efficient separation of acetylene from ethylene and carbon dioxide

2021 ◽  
Vol 9 (14) ◽  
pp. 9248-9255
Author(s):  
Quan-Li Qian ◽  
Xiao-Wen Gu ◽  
Jiyan Pei ◽  
Hui-Min Wen ◽  
Hui Wu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Metal Organic Framework ◽  
Ambient Conditions ◽  
Efficient Separation ◽  
Highly Efficient ◽  
Functional Surfaces ◽  
Metal Organic ◽  
Stable Anion ◽  
Capture Capacity ◽  
Organic Framework

A novel water-stable anion-pillared MOF material with suitable rhombic pores and functional surfaces exhibits high C2H2 capture capacity and simultaneously high C2H2/CO2 and C2H2/C2H4 selectivities under ambient conditions.

A novel copper(ii)–lanthanum(iii) metal organic framework as a selective catalyst for the aerobic oxidation of benzylic hydrocarbons and cycloalkenes

2016 ◽  
Vol 6 (11) ◽  
pp. 3727-3736 ◽  
Author(s):  
P. Cancino ◽  
A. Vega ◽  
Andrea Santiago-Portillo ◽  
Sergio Navalon ◽  
Mercedes Alvaro ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Organic Framework ◽  
Aerobic Oxidation ◽  
Selective Catalyst ◽  
Pyridinedicarboxylic Acid ◽  
Metal Organic ◽  
Organic Framework

The synthesis and catalytic activity of a novel heteronuclear CuII and LaIII metal organic framework (MOF) having pyridinedicarboxylic acid (CuLa-MOF) is reported.

scholarly journals γ-Cyclodextrin metal–organic framework for efficient separation of chiral aromatic alcohols

RSC Advances ◽  
2017 ◽  
Vol 7 (58) ◽  
pp. 36297-36301 ◽  
Author(s):  
Cheng-Xiong Yang ◽  
Yu-Zhen Zheng ◽  
Xiu-Ping Yan
Keyword(s):  
Stationary Phase ◽  
Chiral Stationary Phase ◽  
Metal Organic Framework ◽  
Hplc Separation ◽  
Efficient Separation ◽  
Aromatic Alcohols ◽  
Metal Organic ◽  
Organic Framework

A γ-cyclodextrin metal–organic framework was applied as an efficient chiral stationary phase for HPLC separation of chiral aromatic alcohols.

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