Figure captions:
Figure 1. Schematic illustration of the representative porous
structures in MOFs: (a) One-dimensional channel, (b) Cage type pore, and
(c) Interlayer cavity.
Figure 2. (a, b) The crystal structures and channel shapes of
Zn2(bpy)(btec). (c) Comparison of molecular size
difference of C2H2 and
C2H4 (Color code: Zn, green; O, red; N,
light blue; C, gray).
Figure 3. (a) Single-component sorption isotherms of
C2H2,
C2H4, and CO2 at 298 K
for Zn2(bpy)(btec). (b, c) IAST selectivities of
C2H2/C2H4(1/99) and C2H2/CO2(50/50) mixtures on some benchmark materials. (d) Adsorption isotherms
of C2H2 for
Zn2(bpy)(btec) at 288-308 K. (e)
C2H4 and CO2 uptakes of
different MOF materials at 1 bar and 298 K. (f) Comparison of
C2H2/C2H4(1/99) and C2H2/CO2(50/50) IAST selectivities and
C2H2-C2H4-CO2uptake ratios of different adsorbents at 1 bar and 298 K.
Figure 4. Experimental breakthrough (298 K, 1 bar) and
desorption (333 K, 1 bar) curves for
C2H2/C2H4(1/99) (a, b) and
C2H2/CO2 (50/50) (c, d)
mixtures on Zn2(bpy)(btec).
Figure 5. (a, b) Single-component adsorption isotherms of
CH4, C2H2,
C2H4,
C2H6,
C3H4,
C3H6,
C3H8, CO2,
H2, O2, and N2 in
Zn2(bpy)(btec) at 298 K. (c, d) Multi-component
breakthrough (298 K, 1 bar) and desorption (333 K, 1 bar) curves for
CH4/C2H2/C2H4/C2H6/C3H6/C3H8/CO2/H2(30/1/10/25/10/10/1/13) mixtures on Zn2(bpy)(btec).
Figure 6. Calculated C2H2molecule binding sites in Zn2(bpy)(btec) by GCMC
simulation. Color code: Zn (green), O (red), N (light blue), C (gray),
and C2H2 (blue).
Figure 7. (a) Scale-up synthesis of
[Zn2(bpy)(btec)(H2O)2]·2H2O.
(b) TG and DSC curves for as-synthesized
[Zn2(bpy)(btec)(H2O)2]·2H2O.
(c, d) PXRD patterns of
[Zn2(bpy)(btec)(H2O)2]·2H2O
after different treatment. (e) Comparison of the heat and water
stability of some benchmark MOF materials.