2011
DOI: 10.1021/ja2087773
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Sulfonate-Grafted Porous Polymer Networks for Preferential CO2 Adsorption at Low Pressure

Abstract: A porous polymer network (PPN) grafted with sulfonic acid (PPN-6-SO(3)H) and its lithium salt (PPN-6-SO(3)Li) exhibit significant increases in isosteric heats of CO(2) adsorption and CO(2)-uptake capacities. IAST calculations using single-component-isotherm data and a 15/85 CO(2)/N(2) ratio at 295 K and 1 bar revealed that the sulfonate-grafted PPN-6 networks show exceptionally high adsorption selectivity for CO(2) over N(2) (155 and 414 for PPN-6-SO(3)H and PPN-6-SO(3)Li, respectively). Since these PPNs also … Show more

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Cited by 528 publications
(449 citation statements)
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“…The CO 2 -philic functionalities are introduced into the porous polymers through ''knitting'' method in recent research studies. The functionalities include amino (-NH 2 ), acetyl (-COCH 3 ), formyl (-CHO) and nitro (-NO 2 ) groups (He et al 2015;Lu et al 2011). Additionally, the introduction of N 2 -rich polar moieties such as carbazole and triazine groups is also an impressive route to increase CO 2 adsorption capacity.…”
Section: Microporous Organic Polymers (Mops)mentioning
confidence: 99%
See 1 more Smart Citation
“…The CO 2 -philic functionalities are introduced into the porous polymers through ''knitting'' method in recent research studies. The functionalities include amino (-NH 2 ), acetyl (-COCH 3 ), formyl (-CHO) and nitro (-NO 2 ) groups (He et al 2015;Lu et al 2011). Additionally, the introduction of N 2 -rich polar moieties such as carbazole and triazine groups is also an impressive route to increase CO 2 adsorption capacity.…”
Section: Microporous Organic Polymers (Mops)mentioning
confidence: 99%
“…The higher microporosity and impregnation of adsorbent material with N-functionality or carboxylic acid group elevate the heat of CO 2 adsorption for various adsorbent materials (Gadipelli and Guo 2015). Lu et al (2011) grafted PPN with sulfonic acid and its lithium salt, which significantly increased the CO 2 -uptake capacity and isosteric heat of CO 2 adsorption under ambient conditions. Multi-walled carbon nanotubes (CNTs) and amine-grafted CNT presented heats of CO 2 adsorption around 11.8 and 18.9 kJ mol -1 , respectively, which revealed the effect of incorporation of amine on heat of CO 2 adsorption.…”
Section: Heat Of Co 2 Adsorption Of the Adsorbentsmentioning
confidence: 99%
“…), another subfamily of porous material, has also been proposed. [71][72][73][74] From these types of materials, we discuss selected ones that offer the best compromise between selectivity, uptake, kinetics and the energy input for desorption in CO 2 capture.…”
Section: Discussionmentioning
confidence: 99%
“…CO 2 -uptake capacity of a metal oxide is primarily dominated by the factors such as surface area, pore volume, pore functionality and pore size [28]. BET surface area measurement, pore volume and average pore sizes presented in Table 2 indicates the significant role of CO 2 to influence the particle structure.…”
Section: -40mentioning
confidence: 98%