Ultramicroporous materials(pore dimension<7Å,as defined by IUPAC)have emerged as an intriguing class of porous substances with exceptional potential in molecular separation.Current benchmark materials includin...Ultramicroporous materials(pore dimension<7Å,as defined by IUPAC)have emerged as an intriguing class of porous substances with exceptional potential in molecular separation.Current benchmark materials including zeolites face inherent limitations in achieving hyperfine control of pore metrics,which hinder their ability to discriminate and separate molecules of very close dimensions and properties.Metal-organic frameworks,constructed by deliberate connections of metal nodes and organic linkers,have offered a great solution in addressing these challenges due to their atomic precision that allows angstrom-level engineering of pore width[1-3].展开更多
Methane storage and onboard delivery using metal-organic frameworks(MOFs)have undergone significant development and benchmark materials with promising performance have been realized.It is still quite challenging to re...Methane storage and onboard delivery using metal-organic frameworks(MOFs)have undergone significant development and benchmark materials with promising performance have been realized.It is still quite challenging to realize simultaneously high gravimetric and volumetric working capacities.This work analyzed the state-of-the-art MOFs with a focus on the effect of pore volume and storage temperature/pressure to achieve optimized performance.The optimal MOF pore volume range increases for storage at a slightly reduced temperature(270 K)and elevated pressure(100 bar).A new benchmark of volumetric working capacity(248 cm^(3)[STP]cm^(-3))and gravimetric working capacity(0.46 g g^(-1))was discovered with a highly porous MOF,NPF-200,at 100-5 bar and 270 K.展开更多
基金support from the National Key R&D Program of China(2023YFA1507601)the National Natural Science Foundation of China(52373213,22301176)the Shanghai Pujiang Program(23PJ1405000).
文摘Ultramicroporous materials(pore dimension<7Å,as defined by IUPAC)have emerged as an intriguing class of porous substances with exceptional potential in molecular separation.Current benchmark materials including zeolites face inherent limitations in achieving hyperfine control of pore metrics,which hinder their ability to discriminate and separate molecules of very close dimensions and properties.Metal-organic frameworks,constructed by deliberate connections of metal nodes and organic linkers,have offered a great solution in addressing these challenges due to their atomic precision that allows angstrom-level engineering of pore width[1-3].
基金the Deputyship for Research&Innovation,Ministry of Education,in Saudi Arabia for funding this research work through Project number(DRI-KSU-572)support from the National Natural Science Foundation of China(No.22108007).
文摘Methane storage and onboard delivery using metal-organic frameworks(MOFs)have undergone significant development and benchmark materials with promising performance have been realized.It is still quite challenging to realize simultaneously high gravimetric and volumetric working capacities.This work analyzed the state-of-the-art MOFs with a focus on the effect of pore volume and storage temperature/pressure to achieve optimized performance.The optimal MOF pore volume range increases for storage at a slightly reduced temperature(270 K)and elevated pressure(100 bar).A new benchmark of volumetric working capacity(248 cm^(3)[STP]cm^(-3))and gravimetric working capacity(0.46 g g^(-1))was discovered with a highly porous MOF,NPF-200,at 100-5 bar and 270 K.
