Rational Fabrication of Polyethylenimine-Linked Microbeads for Selective CO<sub>2</sub> Capture

Mane, Sachin; Gao, Zhen-Yu; Li, Yuxia; Liu, Xiaoqin; Sun, Lin‐Bing

doi:10.1021/acs.iecr.7b04212

Cited by 36 publications

(27 citation statements)

References 69 publications

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“…20,21 Similar results where precursors containing amino group improved the interaction between CO 2 molecules and the pore wall contributed to the improved selectivity have been reported elsewhere. 8,[33][34][38][39][40] The selectivity of HCP-MAAM-2 was found to be 53 at 273 K and dropped to 38 at 298 K. The corresponding purity of CO 2 stream at the two temperatures was 91% and 88% respectively. As the temperature decreases, adsorption capacity increases, while selectivity increases, which is a common adsorption behaviour.…”

Section: Co 2 /N 2 Selectivitymentioning

confidence: 95%

Eco-Friendly Fabrication of a Highly Selective Amide-Based Polymer for CO₂ Capture

Fayemiwo

Chiarasumran

Nabavi

et al. 2019

Ind. Eng. Chem. Res.

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Porous polymeric adsorbents for CO 2 capture (HCP-MAAMs) were fabricated by copolymerisation of methacrylamide (MAAM) and ethylene glycol dimethacrylate (EGDMA) using acetonitrile and azobisisobutyronitrile as a porogen and initiator, respectively. The X-ray photoelectron and Fourier transform infrared spectra revealed a high density of amide groups in the polymer matrix of HCP-MAAMs, which enabled high selectivity to CO 2. The polymers BET surface area and total pore volume was up to 277 m 2 g-1 and 0.91 cm 3 g-1 , respectively. The highest CO 2 uptake at 273 K and 1 bar CO 2 pressure was 1.45 mmol g-1 and the heat of adsorption was 27-35 kJ mol-1. The polymer with the lowest crosslinking density exhibited unprecedented CO 2 /N 2 selectivity of 394 at 273 K. Life cycle assessment revealed a lower environmental impact of HCP-MAAMs compared to molecularly imprinted polymers. HCP-MAAMs are eco-friendly CO 2 adsorbents owing to their low regeneration energy, environmentally benign fabrication process, and high selectivity.

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Section: Co 2 /N 2 Selectivitymentioning

confidence: 95%

Eco-Friendly Fabrication of a Highly Selective Amide-Based Polymer for CO₂ Capture

Fayemiwo

Chiarasumran

Nabavi

et al. 2019

Ind. Eng. Chem. Res.

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“…Isosteric heat of adsorption (-Qst) was determined from adsorption data at two different temperatures using nonlinear curve fitting (Figure S7). Figure demonstrates that the -Qst values of NUT-16 and SnPCs vary from 23 to 42 kJ mol –1 for initial adsorption of CO 2 . NUT-16 and SnPCs revealed the declined -Qst, which is caused by the occupation of active sites.…”

Section: Resultsmentioning

confidence: 96%

“…Isosteric heat of adsorption (-Qst) was determined from adsorption data at two different temperatures using nonlinear curve fitting (Figure S7). 59 Dynamic breakthrough experiments were further conducted to assess the separation performance of adsorbents. A binary CO 2 /CH 4 (50/50) mixture was employed and the results are shown in Figure S8.…”

Section: ■ Resultsmentioning

confidence: 99%

Development of High Yielded Sn-Doped Porous Carbons for Selective CO₂Capture

Mane

Liu

et al. 2019

ACS Sustainable Chem. Eng.

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The use of porous carbons for selective CO2 separation attracts increasing attention. Owing to low thermostability of porous polymers, low yield is the major concern of porous carbons. To obtain porous carbons with high yield, the development of thermostable porous polymers is highly expected. Herein, high yielded (70% for 700 °C and 64% for 800 °C) Sn-doped porous carbons (SnPCs) have been constructed through KOH-assisted carbonization of Sn-containing polymer. Notably, SnPC-700 (218.5 mg·g–1) demonstrates higher CO2 adsorption capacity than the reference sample prepared without KOH, SnPC-700r (188.3 mg·g–1), indicating the importance of KOH-assisted activation. Carbonization temperature has an effect on the adsorption capacity of resultant materials, and high carbonization temperature leads to better adsorption capacity on CO2. SnPC-800 is able to capture 242.8 mg·g–1 of CO2, which is better than some benchmarks including BILP-7 (193.0 mg·g–1), PAF-1–450 (196.4 mg·g–1), and FCTF-1 (205.5 mg·g–1). More importantly, SnPC-800 demonstrates good selectivity of CO2 over CH4 (31.1). Thus, high yield and good performance upon CO2 adsorption capacity and selectivity over CH4 make SnPCs attractive candidates for the removal of CO2 from natural gas.

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“…On the other hand, polar functional sorbents also enhance affinity for atmospheric moisture which results into decreased CO 2 uptake. 4,5 Moreover, porous polymer network-6 (PPN-6) after tethering with alkylamines exhibited a high isosteric heat of adsorption (Q st ), with a value up to 60 kJ mol À1 contributes to chemisorption which results into energyintensive regeneration of adsorbent. 6 Thus, functional sorbents have the drawbacks of low adsorption capacity and high heat of adsorption.…”

Section: Introductionmentioning

confidence: 99%

Role of aromatic ring spacer in homo‐coupled conjugated microporous polymers in selective CO₂ separation

Mane

Kanase

Mohite

2022

J of Applied Polymer Sci

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To obtain high purity of natural and flue gases, the development of adsorbent with appropriate structure is of great importance. As a result, there is an urgent need to investigate the role of aromatic ring spacer in adsorbent in high CO 2 capture. For this, conjugated microporous polymers (CMPs) were fabricated through homo-coupling reaction of 1,3,5-tribromobenzene (TBB) and 1,3,5-triethynylbenzene (TEB). It was observed that, CMP-A (without spacer) demonstrates high CO 2 uptake over CMP-B (with spacer). CMP-A demonstrates CO 2 uptake of 212.1 mg g À1 which is obviously higher than benchmark adsorbents under the analogous conditions. In addition, the obtained CO 2 uptake is also higher than metal-organic framework (MOF) and energyintensive carbon-based adsorbents. CMP-A revealed high CO 2 /N 2 selectivity (78.5) over CMP-B (56.1). It was noticed that CMP-A demonstrates excellent CO 2 /CH 4 and CO 2 /N 2 selectivity over CMP-B at 273 K. This is mainly due to appropriate structure in CMP-A (without spacer). The obtained CO 2 /N 2 selectivity (78.5) is higher than recently reported adsorbents under the similar experimental conditions.

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Rational Fabrication of Polyethylenimine-Linked Microbeads for Selective CO₂ Capture

Cited by 36 publications

References 69 publications

Eco-Friendly Fabrication of a Highly Selective Amide-Based Polymer for CO₂ Capture

Eco-Friendly Fabrication of a Highly Selective Amide-Based Polymer for CO₂ Capture

Development of High Yielded Sn-Doped Porous Carbons for Selective CO₂Capture

Role of aromatic ring spacer in homo‐coupled conjugated microporous polymers in selective CO₂ separation

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Rational Fabrication of Polyethylenimine-Linked Microbeads for Selective CO2 Capture

Cited by 36 publications

References 69 publications

Eco-Friendly Fabrication of a Highly Selective Amide-Based Polymer for CO2 Capture

Eco-Friendly Fabrication of a Highly Selective Amide-Based Polymer for CO2 Capture

Development of High Yielded Sn-Doped Porous Carbons for Selective CO2Capture

Role of aromatic ring spacer in homo‐coupled conjugated microporous polymers in selective CO2 separation

Contact Info

Product

Resources

About

Rational Fabrication of Polyethylenimine-Linked Microbeads for Selective CO₂ Capture

Eco-Friendly Fabrication of a Highly Selective Amide-Based Polymer for CO₂ Capture

Eco-Friendly Fabrication of a Highly Selective Amide-Based Polymer for CO₂ Capture

Development of High Yielded Sn-Doped Porous Carbons for Selective CO₂Capture

Role of aromatic ring spacer in homo‐coupled conjugated microporous polymers in selective CO₂ separation