Carbon dioxide adsorption over zeolite-like metal organic frameworks (ZMOFs) having a sod topology: Structure and ion-exchange effect

Chen, Chao; Kim, Jun; Yang, Da-Ae; Ahn, Wha‐Seung

doi:10.1016/j.cej.2011.01.096

Cited by 108 publications

(51 citation statements)

References 44 publications

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“…For the purpose of comparison, Ta ble 2S in the Supporting Information shows the CO 2 adsorption capacities of differentm aterials under different temperature and pressure conditions. [35][36][37][38] In general,t he total amount of adsorbed CO 2 molecules depends mainly on the surfacea rea,p orosity,a nd PV of the mesoporous materials. The abundantp resence of nitrogen surface groups of MCN materials is also responsible for the enhancement of CO 2 uptake, but the correlation and effect of different nitrogen functional groupso nC O 2 captureh as not been systematically clarified previously.A sd iscussed, the total amount of CO 2 uptake is higherf or the MCN sample carbonized at 900 8Ct han for those synthesized at other temperatures;t his indicates that the types of quaternary nitrogen were relatively greater and contributed to improved CO 2 capture more than pyridinic and pyrrolic functionalities at each adsorption temperature.…”

Section: High-pressure Co 2 Adsorptionmentioning

confidence: 99%

Effect of Heat Treatment on the Nitrogen Content and Its Role on the Carbon Dioxide Adsorption Capacity of Highly Ordered Mesoporous Carbon Nitride

Lakhi

Park

Joseph

et al. 2017

Chemistry An Asian Journal

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Mesoporous carbon nitrides (MCNs) with rod-shaped morphology and tunable nitrogen contents have been synthesized through a calcination-free method by using ethanol-washed mesoporous SBA-15 as templates at different carbonization temperatures. Carbon tetrachloride and ethylenediamine were used as the sources of carbon and nitrogen, respectively. The resulting MCN materials were characterized with low- and high-angle powder XRD, nitrogen adsorption, high-resolution (HR) SEM, HR-TEM, elemental analysis, X-ray photoelectron spectroscopy, and X-ray absorption near-edge structure techniques. The carbonization temperature plays a critical role in controlling not only the crystallinity, but also the nitrogen content and textural parameters of the samples, including specific surface area and specific pore volume. The nitrogen content of MCN decreases with a concomitant increase in specific surface area and specific pore volume, as well as the crystallinity of the samples, as the carbonization temperature is increased. The results also reveal that the structural order of the materials is retained, even after heat treatment at temperatures up to 900 °C with a significant reduction of the nitrogen content, but the structure is partially damaged at 1000 °C. The carbon dioxide adsorption capacity of these materials is not only dependent on the textural parameters, but also on the nitrogen content. The MCN prepared at 900 °C, which has an optimum BET surface area and nitrogen content, registers a carbon dioxide adsorption capacity of 20.1 mmol g at 273 K and 30 bar, which is much higher than that of mesoporous silica, MCN-1, activated carbon, and multiwalled carbon nanotubes.

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Section: High-pressure Co 2 Adsorptionmentioning

confidence: 99%

Effect of Heat Treatment on the Nitrogen Content and Its Role on the Carbon Dioxide Adsorption Capacity of Highly Ordered Mesoporous Carbon Nitride

Lakhi

Park

Joseph

et al. 2017

Chemistry An Asian Journal

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“…[7,8] Considering the rapid progress in the range of nanoporous materials used for CO 2 capture, we compared the CO 2 adsorption capacities and isosteric heat of adsorptionsf or the MCN-8E-150w ith other solid adsorbent materials including mesoporouss ilica modifiedw itha mines, MOFs, and zeolitesr eported in the literatures (Table S5). [19][20][21][22][23][24][25][26][27][28][29][30][31] Although MCN-8E-150s howed the enhanced CO 2 adsorption performance, it is still required to develop the technologiest os electively adsorb the CO 2 adsorption from ambient air.T he major problemsr elated with pressure drop, thermodynamics and kinetics upon heat transferring, corrosion and losses of functional amineg roups during the adsorption process, and large energyd emands for the regeneration process should also be addressed in the future. [32][33][34] In conclusion, we demonstrated for the first time the energy efficient preparation of 3D-structured MCN materials with highly ordered mesostructure, tunable pore diameters and high nitrogen content using 3-amino-1,2,4-triazole as as ingle CN precursora nd calcination-free and ethanol-washed KIT-6 silica as hard templates.…”

mentioning

confidence: 99%

Energy Efficient Synthesis of Ordered Mesoporous Carbon Nitrides with a High Nitrogen Content and Enhanced CO₂ Capture Capacity

Park

Lakhi

Ramadass

et al. 2017

Chemistry A European J

101

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Highly ordered mesoporous carbon nitrides (MCN) with 3D structure and a high nitrogen content are successfully prepared for the first time using "uncalcined" mesoporous silica template, KIT-6 and 3-amino-1,2,4-triazole as a single molecular carbon and nitrogen precursor. The prepared MCN with C and N stoichiometry of C N shows unique CN framework and exhibits the CO capture capacity of 5.63 mmol g at 273 K and 30 bar, which is higher than that of MCN with 2D structure and C N stoichiometry.

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“…Thus, a relatively high temperature is necessary to desorb CO 2 . For example, some MOFs like ZMOF, Complete desorption of CO 2 can be attained at 40°C …”

Section: Resultsmentioning

confidence: 99%

“…For example, some MOFs like ZMOF, Complete desorption of CO 2 can be attained at 40°C. 31 Cyclic CO 2 sorption-desorption performance For practical application, the CO 2 capture performance of sorbent must be stable enough in cyclic CO 2 sorption-desorption runs to be used for many cycles. In this work, the cyclic performance of all the samples was evaluated by testing their performance in 10 consecutive sorption-desorption runs.…”

Section: Sorbent Regenerationmentioning

confidence: 99%

Mesoporous silica impregnated with organoamines for post‐combustion CO₂ capture: a comparison of introduced amine types

Chen

Bhattacharjee

2017

Greenhouse Gases

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Polyethylenimine (PEI) with different molecular weight such as 275, 800, 1800, and 25000, together with tetraethylenpentamine (TEPA) were impregnated into a mesoporous silica support (silica gel) using a wet impregnation method. These resultant solid amine sorbents with different amine types were compared in terms of CO2 sorption kinetics and capacity at different temperatures, sorbent regeneration, and cyclic sorption‐desorption performance, to study the effect of introduced amine types on the CO2 capture performance. In the studied temperature range of 35–95°C for CO2 sorption, samples with different amine types perform differently in CO2 sorption kinetics and capacity. The largest CO2 capture capacity for different solid amine samples appears at different temperatures, and there is evident difference on CO2 capture capacity of different samples. In particular, PEI(25000)/silica gel showed the lowest CO2 capture capacity among all samples. Compared to PEI/silica gel samples, TEPA/silica gel showed a relatively higher CO2 sorption capacity. The regeneration of TEPA/silica gel is more difficult than PEI/silica gel samples, and 100°C was found suitable for complete regeneration of all sorbents. PEI(25000)/silica gel showed good reversibility and stability during 10 cyclic CO2 sorption‐desorption (sorption at 75°C and desorption at 100°C) tests, whereas PEI(275), PEI(800), PEI(1800), and TEPA/silica gel all suffered to various extents from amine leaching problems in cyclic CO2 sorption‐desorption performance under identical conditions. The cyclic CO2 sorption‐desorption performance can be improved by decreasing the desorption temperature to 75°C that leads to slightly loss of CO2 uptake in the second run. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Carbon dioxide adsorption over zeolite-like metal organic frameworks (ZMOFs) having a sod topology: Structure and ion-exchange effect

Cited by 108 publications

References 44 publications

Effect of Heat Treatment on the Nitrogen Content and Its Role on the Carbon Dioxide Adsorption Capacity of Highly Ordered Mesoporous Carbon Nitride

Effect of Heat Treatment on the Nitrogen Content and Its Role on the Carbon Dioxide Adsorption Capacity of Highly Ordered Mesoporous Carbon Nitride

Energy Efficient Synthesis of Ordered Mesoporous Carbon Nitrides with a High Nitrogen Content and Enhanced CO₂ Capture Capacity

Mesoporous silica impregnated with organoamines for post‐combustion CO₂ capture: a comparison of introduced amine types

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Carbon dioxide adsorption over zeolite-like metal organic frameworks (ZMOFs) having a sod topology: Structure and ion-exchange effect

Cited by 108 publications

References 44 publications

Effect of Heat Treatment on the Nitrogen Content and Its Role on the Carbon Dioxide Adsorption Capacity of Highly Ordered Mesoporous Carbon Nitride

Effect of Heat Treatment on the Nitrogen Content and Its Role on the Carbon Dioxide Adsorption Capacity of Highly Ordered Mesoporous Carbon Nitride

Energy Efficient Synthesis of Ordered Mesoporous Carbon Nitrides with a High Nitrogen Content and Enhanced CO2 Capture Capacity

Mesoporous silica impregnated with organoamines for post‐combustion CO2 capture: a comparison of introduced amine types

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Product

Resources

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Energy Efficient Synthesis of Ordered Mesoporous Carbon Nitrides with a High Nitrogen Content and Enhanced CO₂ Capture Capacity

Mesoporous silica impregnated with organoamines for post‐combustion CO₂ capture: a comparison of introduced amine types