We herein report the construction of a new heteropore COF which consists of two different kinds of micropores with unprecedented shapes. It exists as hollow microspheres and exhibits an extremely high volatile iodine uptake (up to 481 wt%) by encapsulating iodine in the inner cavities and porous shells of the microspheres.
Porous
liquids, a new porous material with fluidity, can be applied
in numerous fields, such as gas storage and/or separation. In this
work, the separation of binary gas mixtures CO2/N2 and CO2/CH4 with porous liquids was examined
by molecular dynamics (MD) simulations. The pure gas adsorption capacity
was analyzed with different concentrations of porous liquids. The
dependence of the separation effect of a gas mixture on the total
pressure and temperature was investigated. Meanwhile, for both CO2/N2 and CO2/CH4 systems,
the adsorption and separation effects of porous liquids with a cage:solvent
ratio of 1:12 are better than those of 1:91 and 1:170. The results
of the spatial distribution function and/or trajectories indicated
that porous liquids prefer CO2, leading to the location
of CO2 in the channels formed in porous liquids. However,
N2 and CH4 are hardly adsorbed into the bulk.
The diffusion of gas molecules follows the order of CO2 > N2 (for CO2/N2) and CH4 > CO2 (for CO2/CH4) in
the bulk
and N2 > CO2 (for CO2/N2) and CH4 > CO2 (for CO2/CH4) at the interface of porous liquids. Upon increasing the
concentrations of porous liquids, the working capacities of CO2 show small decreases in CO2/N2 and
CO2/CH4 systems, but the sorbent selection parameters
are higher in pressure- and temperature-swing adsorption processes.
The porous liquid with a cage:solvent ratio of 1:12 is more suitable
for the separation of CO2/N2 and CO2/CH4 systems than ratios of 1:91 and 1:170.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.