An ultramicroporous multi-walled metal–organic framework for efficient C₂H₂/CO₂ separation under humid conditions

Abstract

An infinite multi-walled ultramicroporous MOF has been designed and prepared from a classical H3TATB linker and In(iii) ions, exhibiting good C2H2/CO2 separation performance in both dry and humid gas phases.

Building Stable Pillar-Layered Metal–Organic Frameworks: Introduction of Unsaturated Bonds for Enhanced Efficiency in C2H2/CO2 Separation

“…This observation suggests that a portion of the CO 2 was desorbed and replaced by C 2 H 2 until a breakthrough equilibrium was reached. This phenomenon can be attributed to the significant affinity difference between these two gases . The breakthrough experiments were ended when the outlet gas concentrations became constant, indicating that efficient C 2 H 2 /CO 2 separation was achieved with Zn-L .…”

“…This phenomenon can be attributed to the significant affinity difference between these two gases. 40 The breakthrough experiments were ended when the outlet gas concentrations became constant, indicating that efficient C 2 H 2 /CO 2 separation was achieved with Zn-L. The interval between the C 2 H 2 and CO 2 retention time for Zn-L N=N is 36.2 min g −1 , which are lower than that of some top-level MOFs, such as SNNU-45 (113 min g −1 ) 41 and ATC-Cu (213 min g −1 ), 42 but are comparable to those of ZJU-196a (6.3 min g −1 ), 43 Zn(azbpz) (15 min g −1 ), 44 and so on as shown in Figure 3f and Table S5.…”