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Fluorocarbons are industrially important chemicals and materials for their adsorption and separation have applications in refrigeration and environmental technologies. Here, the authors investigate the adsorption behaviour of fluorocarbons on a series of metal-organic frameworks.

Metal-organic frameworks are promising candidates for capturing and sequestering carbon dioxide. Chen and co-workers report a metal-organic framework that exhibits high uptake of carbon dioxide at ambient conditions, and is a potentially useful adsorbent for post-combustion carbon dioxide capture.

Designing efficient adsorbents for trace gas removal remains a serious challenge. Here, the authors show promise in layered 2D metal−organic frameworks, often overlooked in favor of 3D frameworks, for separating trace acetylene from ethylene with enhanced performance and high stability.

C₂H₄ is one of the most important chemical raw materials. Here, the authors report that tuning of pore structure shifts the multi-component gas separation function, enabling one-step production of high-purity C₂H₄ in the quaternary mixture.

The dynamic transformation of Cu ions during the selective catalytic reduction of NO_x on Cu zeolites is well documented, although the function of the zeolite framework has not been fully understood. Here the authors unravel the role of anionic Al sites in the zeolite framework in regulating the mobility and reactivity of Cu cations during catalysis.

The removal of acetylene from ethylene/acetylene mixtures is an industrially important but challenging task. Here the authors report a microporous metal–organic framework with optimized pore/cage space design and chemical functionalization, capable of removing acetylene from low concentration mixtures.

Ethylene (C₂H₄) purification from multi-component mixtures by physical adsorption is a great challenge in the chemical industry. Here authors present a GeF6^2- anion embedded MOF ZNU-6 with customized pore structure and pore chemistry for benchmark one-step C₂H₄ recovery from C₂H₂ and CO₂ with record C₂H₄ productivity.

The separation of propadiene from propyne/propadiene mixtures remains challenging. Here, the authors report a sorbent screening protocol and show that metal-organic frameworks (MOFs) with open metal sites and cage-based molecule traps exhibit high performance for propyne/propadiene separation.

Separating ethylene from ethane is highly challenging as they have very similar physical properties. Here, a metal–organic framework is reported that, owing to its pore size and rigidity, adsorbs ethylene but almost completely excludes ethane under ambient conditions.

Separation of ethylene from C2 ternary mixture with high working capacity is a challenging task. Here, the authors report a Th-azole framework (Azole-Th-1) for highly efficient purification of ethylene from C₂H₄/C₂H₆ and C₂H₄/C₂H₂/C₂H₆ mixtures, respectively.

Microimaging techniques, such as interference and infrared microscopy, can be used as a tool to directly monitor guest profiles within nanoporous materials. Observation of the variation in these profiles leads to unprecedented insight into transport phenomena, including intracrystalline diffusion and surface permeation.