Study of CO2 Capture Using Triethanolamine-Modified Mesoporous Silica

2011 ◽  
Vol 688 ◽  
pp. 286-290
Author(s):  
Hong Li Zhang
Keyword(s):  
Carbon Dioxide ◽  
Mesoporous Silica ◽  
Flue Gas ◽  
Room Temperature ◽  
Solid Sorbents ◽  
Gas Streams ◽  
Silica Material ◽  
Adsorption Capacities ◽  
Adsorption Desorption ◽  
Uniform Pore Size

Novel functionalised absorbents have been synthesized by immobilization of triethanolamine on synthetic mesoporous silica for CO2capture. Mesoporous silica material with a uniform pore size of 20-50nm and a surface area of 200~300 m2/g was used as loader for capturing agents. The capture of carbon dioxide from simulated flue gas streams has been achieved by using triethanolamine immobilized mesoporous silica. Preliminary attempts have also been made to determine the CO2adsorption capacities of these newly developed materials. The results revealed that maximum adsorption capacities was 28.01mg/g for immobilized triethanolamine mesoporous silica at room temperature,and the rate of desorption is 99% at 90°C.Recycle of adsorption-desorption have many times,and the ability of capturing CO2was stable. The results suggest that immobilized triethanolamine have a good affinity for the capture of carbon dioxide from simulated flue gas streams.The performance of these immobilized and triethanolamine-mesoporous silica solid sorbents decreased with regeneration.

Amino-Functionalized Silica Materials for Carbon Dioxide Capture

2015 ◽  
Author(s):  
Hanna Abbo ◽  
Marvin Piet ◽  
Salam Titinchi ◽  
Wilhelm Schwieger ◽  
Olav Bolland
Keyword(s):  
Carbon Dioxide ◽  
Adsorption Capacity ◽  
Operating Conditions ◽  
Fast Kinetics ◽  
Solid Sorbents ◽  
Functionalized Mesoporous Silica ◽  
Adsorption Capacities ◽  
Chemical Grafting ◽  
Adsorption Desorption ◽  
Direct Condensation

Amine-functionalized mesoporous silica has attracted much attention as a promising chemical sorbent for capturing carbon dioxide. It has the combination of several features viz., high adsorption capacity, high selectivity toward CO2, fast kinetics, mild conditions for desorption and should be stable under operating conditions. In this study, a chemical grafting route has been developed to synthesize mesoporous adsorbents with amines functionalization for CO2 capture. The initial silylation step was achieved by grafting of different silane linkers (3-aminopropyl)-trimethoxysilane (APS) and 3-chloropropyl)-trimethoxysilane (CPS) via direct condensation and hydrolysis reaction. After silylation the CPS-supports was reacted with tris(2-aminoethyl)amine (TREN) to introduce the amine group to increase the adsorptive capabilities for these sorbents. The synthesized sorbents were characterized by N2 adsorption/desorption, XRD, FTIR and HR-SEM. The adsorption capacities of the modified solid sorbents show a significant enhancement in their adsorption capacity by 3–4 times higher than that of the parent materials which indicate the affirmative impact of amines for CO2 adsorption after grafting.

Carbon dioxide capture from a real coal-fired flue gas using K-based solid sorbents in a 0.5 MWe-scale test-bed facility

2020 ◽  
Vol 103 ◽  
pp. 103192
Author(s):  
Young Cheol Park ◽  
Sung-Ho Jo ◽  
Jae-Young Kim ◽  
Yooseob Won ◽  
Hyungseok Nam ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Flue Gas ◽  
Carbon Dioxide Capture ◽  
Test Bed ◽  
Solid Sorbents ◽  
Scale Test

Highly optimized CO2 capture by inexpensive nanoporous covalent organic polymers and their amine composites

2015 ◽  
Vol 183 ◽  
pp. 401-412 ◽  
Author(s):  
Hasmukh A. Patel ◽  
Cafer T. Yavuz
Keyword(s):  
Flue Gas ◽  
Gas Flow ◽  
Low Cost ◽  
High Specific Surface Area ◽  
Organic Polymers ◽  
Mixed Gas ◽  
Gas Streams ◽  
Promising Application ◽  
Adsorption Of Co ◽  
Adsorption Desorption

Carbon dioxide (CO2) storage and utilization requires effective capture strategies that limit energy penalties. Polyethylenimine (PEI)-impregnated covalent organic polymers (COPs) with a high CO2 adsorption capacity are successfully prepared in this study. A low cost COP with a high specific surface area is suitable for PEI loading to achieve high CO2 adsorption, and the optimal PEI loading is 36 wt%. Though the adsorbed amount of CO2 on amine impregnated COPs slightly decreased with increasing adsorption temperature, CO2/N2 selectivity is significantly improved at higher temperatures. The adsorption of CO2 on the sorbent is very fast, and a sorption equilibrium (10% wt) was achieved within 5 min at 313 K under the flow of simulated flue gas streams. The CO2 capture efficiency of this sorbent is not affected under repetitive adsorption–desorption cycles. The highest CO2 capture capacity of 75 mg g−1 at 0.15 bar is achieved under dry CO2 capture however it is enhanced to 100 mg g−1 in the mixed gas flow containing humid 15% CO2. Sorbents were found to be thermally stable up to at least 200 °C. TGA and FTIR studies confirmed the loading of PEIs on COPs. This sorbent with high and fast CO2 sorption exhibits a very promising application in direct CO2 capture from flue gas.

scholarly journals Flying MOFs: polyamine-containing fluidized MOF/SiO2 hybrid materials for CO2 capture from post-combustion flue gas

2018 ◽  
Vol 9 (20) ◽  
pp. 4589-4599 ◽  
Author(s):  
Ignacio Luz ◽  
Mustapha Soukri ◽  
Marty Lail
Keyword(s):  
Solid State ◽  
Mesoporous Silica ◽  
Fluidized Bed ◽  
Hybrid Materials ◽  
Flue Gas ◽  
Metal Organic Framework ◽  
Fluidized Bed Reactor ◽  
Large Collection ◽  
Solid Sorbents ◽  
Metal Organic

Solid-state synthesis ensures a high loading and well dispersed growth of a large collection of metal–organic framework (MOF) nanostructures within a series of commercially available mesoporous silica allowing to render MOFs into fluidized solid sorbents for CO2 capture from post-combustion flue gas in a fluidized-bed reactor.

scholarly journals Adsorptive removal of methylene blue from aqueous solution using coal fly ash-derived mesoporous silica material

2019 ◽  
Vol 37 (3-4) ◽  
pp. 333-348 ◽  
Author(s):  
Ning Yuan ◽  
Hui Cai ◽  
Tian Liu ◽  
Qi Huang ◽  
Xinling Zhang
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Fly Ash ◽  
Mesoporous Silica ◽  
Coal Fly Ash ◽  
Nitrogen Adsorption ◽  
Mesoporous Silica Material ◽  
Adsorptive Removal ◽  
Silica Material ◽  
Adsorption Desorption

In the present work, coal fly ash-derived mesoporous silica material (CFA-MS) has been successfully fabricated without employing any extra silica source. The obtained CFA-MS was characterized by Fourier transform infrared spectroscopy, nitrogen adsorption–desorption measurement, powder X-ray diffraction and transmission electron microscopy. Nitrogen adsorption–desorption measurement disclosed that CFA-MS possesses Brunauer–Emmett–Teller-specific surface area of 497 m2·g−1 and pore volume of 0.49 cm3·g−1, respectively. Furthermore, CFA-MS was evaluated for the adsorptive removal of methylene blue from aqueous solution. Several influence parameters on the removal of methylene blue including contact time, pH, initial concentration and temperature were studied in detail. Moreover, Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm models were employed for interpretation of the adsorption process, while the pseudo-first-order and pseudo-second-order kinetics equations were applied to investigate the adsorption kinetics. Results in the current work demonstrate that CFA-MS can be used as an efficient adsorbent for methylene blue removal.

scholarly journals Effect of Extended Aging and Oxidation on Linear Poly(propylenimine)-Mesoporous Silica Composites for CO2 Capture from Simulated Air and Flue Gas Streams

2020 ◽  
Vol 12 (34) ◽  
pp. 38085-38097
Author(s):  
Cornelia Rosu ◽  
Simon H. Pang ◽  
Achintya R. Sujan ◽  
Miles A. Sakwa-Novak ◽  
Eric W. Ping ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Co2 Capture ◽  
Flue Gas ◽  
Gas Streams ◽  
Extended Aging ◽  
Linear Poly

scholarly journals Drastic Enhancement of Carbon Dioxide Adsorption in Fluoroalkyl-Modified Poly(allylamine)

2021 ◽  
Author(s):  
Athanasios Koutsianos ◽  
Louise B. Hamdy ◽  
Chun-Jae Yoo ◽  
Jason J. Lee ◽  
Marco Taddei ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Bonding ◽  
Room Temperature ◽  
Polymer Chains ◽  
High Polymer ◽  
Carbon Dioxide Adsorption ◽  
Positron Annihilation Lifetime ◽  
Gas Streams ◽  
Amine Hydrogen ◽  
Amine Content

Polyamine-based carbon dioxide sorbents suffer from a seesaw relationship between amine content and amine efficiency. High polyamine loadings equate to increased amine contents, but often at the expense of amine efficiency. Carbon dioxide mass transport in compact polymers is severely limited, especially at ambient temperature. High polymer contents curtail diffusion pathways, hindering CO2 from reaching and reacting with the numerous amine functions. Here, we overcome this issue using poly(allylamine) (PAA) grafted with short fluoroalkyl chains and then cross-linked with C60. As experimentally evidenced by positron annihilation lifetime spectroscopy, the incorporation of fluoroalkyl chains generates free volume elements that act as additional diffusion pathways within the material. The inclusion of void volume in fluoroalkyl-functionalized PAA sorbents results in radically increased CO2 uptakes and amine efficiencies in diluted gas streams at room temperature, including simulated air. We speculate that the hydrophobic fluorinated functions interfere with the strong amine hydrogen bonding network disrupting and consequently altering the packing and conformation of the polymer chains. The evidence presented here is a blueprint for the development of more efficient amine-based CO2 sorbents

Novel process technologies for conversion of carbon dioxide from industrial flue gas streams into methanol

2017 ◽  
Vol 21 ◽  
pp. 52-63 ◽  
Author(s):  
Omar Y. Abdelaziz ◽  
Wafaa M. Hosny ◽  
Mamdouh A. Gadalla ◽  
Fatma H. Ashour ◽  
Ibrahim A. Ashour ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Flue Gas ◽  
Gas Streams
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