Anionic Ni-Based Metal-Organic Framework with Li(I) Cations in the Pores for Efficient CH/CO Separation.

Acetylene (CH) is widely used as a raw material for producing various downstream commodities in the petrochemical and electronic industry. Therefore, the acquisition of high-purity CH from a CH/CO mixture produced by partial methane combustion or thermal hydrocarbon cracking is of great significance yet highly challenging due to their similar physical and chemical properties. Herein, we report an anionic metal-organic framework (MOF) named LIFM-210, which has Li cations in the pores and shows a higher adsorption affinity for CH than CO.

MIL-101-Cr/Fe/Fe-NH for Efficient Separation of CH and CH from Simulated Natural Gas.

Adsorptive separation based on porous solid adsorbents has emerged as an excellent effective alternative to energy-intensive conventional separation methods in a low energy cost and high working capacity manner. However, there are few stable mesoporous metal-organic frameworks (MOFs) for efficient purification of methane from other light hydrocarbons in natural gas. Herein, we report a series of stable mesoporous MOFs, MIL-101-Cr/Fe/Fe-NH, for efficient separation of CH and CH from a ternary mixture CH/CH/CH.

Nitro-Decorated Microporous Covalent Organic Framework (TpPa-NO) for Selective Separation of CH from a CH/CH/CO Mixture and CO Capture.

A nitro-decorated microporous covalent organic framework, TpPa-NO, has been synthesized in a gram scale with a one-pot reaction. It can effectively selectively separate CH from a CH/CH/CO mixture and capture CO from CO/N based on ideal adsorption solution theory calculations and transient breakthrough experiments. Theoretical calculations illustrated that the hydrogen atoms of imine bonds, carbonyl oxygen, and nitro group show high affinity toward CH and CO, playing vital roles in efficient separation.

A Series of Functionalized Zirconium Metal-Organic Cages for Efficient CO/N Separation.

Global warming associated with CO emission has led to frequent extreme weather events in recent years. Carbon capture using porous solid adsorbents is promising for addressing the greenhouse effect. Herein, we report a series of robust metal-organic cages (MOCs) featuring various functional groups, such as methyl and amine groups, for CO/N separation.

Method for Synthesis of Zeolitic Imidazolate Framework-Derived LiCoO/CNTs@AlF with Enhanced Lithium Storage Capacity.

Metal-organic framework-derived lithium cobaltate nanoparticles were fabricated by annealing of the ZIF-67 precursor with LiCO under air, followed by homogeneous AlF coating and carbon nanotubes (CNTs) wrapping. The as-prepared AlF-coated LiCoO/CNTs electrode can act as a potential cathode for enhanced lithium storage at both room temperature and an elevated temperature of 50 °C.

Four new Zn(ii) and Cd(ii) coordination polymers using two amide-like aromatic multi-carboxylate ligands: synthesis, structures and lithium-selenium batteries application.

Four new coordination polymers, {[Zn(3-PBI)(HO)]·2DMF} (1), [Cd(3-PBI)(DMF)] (2), {[Zn(μ-O)(4-PBI)]·3DMF} (3), {[Cd(4-PBI)(HO)]·13HO} (4), have been constructed from two isomeric flexible multi-carboxylate ligands, 3-HPBI = 5-(3-(pyridin-3-yl)benzamido)isophthalic acid and 4-HPBI = 5-(3-(pyridin-4-yl)benzamido)isophthalic acid. Structural analysis reveals that compound 1 is a one-dimensional (1D) ladder-like chain assembled by Zn(ii) ions and 3-PBI ligands, which further extend into a 3D supramolecular structure through π⋯π stacking and interlayer (O-H⋯O) hydrogen bonding interactions. In compound 2, Cd metal ions are connected by carboxylate groups to form [Cd(COO)] secondary building units (SBUs).