Crosslinked porphyrin-based polyimides: Tunable porosity parameters and carbon dioxide adsorption
writer：關紹巍
keywords：交聯反應，多孔結構
source：期刊
Issue time：2019年
A series of crosslinked porphyrin-based
polyimides (PPBPI-CRs) were synthesized from 5,10,15,20-tetra[4-[(3-aminophenyl)ethynyl]phenyl]porphyrin
(TAPEPP) and several dianhydrides via
polymerization and crosslinking reactions. PPBPI-CRs exhibited excellently
thermal and chemical stabilities. Meanwhile, PPBPI-CRs revealed decreased
Brunauer-Emmett-Teller (BET) surface areas (628 - 115 m2 g-1)
and enlarged pore sizes with increased conjugate and molecular sizes of
dianhydrides. Moreover, PPBPI-CRs had carbon dioxide uptakes (0.67 - 2.33 mmol
g-1 at 273 K and 1 bar) and CO2 isosteric enthalpies of
adsorption (19.7 - 29.6 kJ mol-1) as well as CO2/N2
selectivities (42.5, 32.21, 36.91 and 74.65).