Journal Article10.1021/EF401988X
Tetraethylenepentamine-Modified Silica Nanotubes for Low-Temperature CO2 Capture
Manli Yao,Yanyan Dong,Xin Hu,Xingxing Feng,Ai-Ping Jia,Guanqun Xie,Gengshen Hu,Ji-Qing Lu,Mengfei Luo,Maohong Fan +9 more
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TL;DR: In this article, mesoporous ethane-silica nanotubes (E-SNTs) and tetraethylenepentamine (TEPA) were used to develop a new type of CO2 sorbent.
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Abstract: The objective of this research is to develop a new type of CO2 sorbent. The sorbents were synthesized with mesoporous ethane–silica nanotubes (E–SNTs) and tetraethylenepentamine (TEPA). They were characterized by nitrogen adsorption/desorption, thermogravimetric analysis, and infrared spectroscopy. A fixed-bed reactor equipped with an online mass spectrometer was used to test the CO2 capture performances of the sorbents. It was found that 75 °C is the optimal CO2 adsorption temperature for amine-impregnated E–SNT sorbents. The highest CO2 sorption capacities achieved with E–SNTs with 50 wt % TEPA loading (E–SNTs–50%) without and with uses of water vapor are 3.58 and 4.74 mmol/g, respectively, under the conditions of a 10.0% CO2/N2 mixture at 75 °C. Cyclic CO2 adsorption–desorption test results indicate that the new composite sorbents are stable and regenerable.
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Citations
Stability of amine-functionalized CO2 adsorbents: a multifaceted puzzle.
TL;DR: The impact of the adsorbent physical and chemical properties, the feed gas composition and characteristics, and the adsorption-desorption operational parameters on the long-term stability of amine-functionalized CO2 adsorbents are discussed.
331
•Journal Article
Tailoring pore properties of MCM-48 silica for selective adsorption of CO2
TL;DR: In this article, four different types of amine-attached MCM-48 silicas were prepared and investigated for CO(2) separation from N(2), and the pore structures and amino group content were investigated by XRD, FT-IR, TGA, N 2 adsorption/desorption at 77 K and CHN/Si analysis.
285
A comparative review between amines and ammonia as sorptive media for post-combustion CO2 capture
TL;DR: In this paper, the authors provided an in-depth discussion regarding the two comparable control technologies, i.e., the amine- vs. ammonia-based capture approaches; ammonia has lower energy costs than monoethanolamine (MEA).
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In Situ ATR and DRIFTS Studies of the Nature of Adsorbed CO2 on Tetraethylenepentamine Films
TL;DR: Results suggest that faster CO2 diffusion and adsorption/desorption kinetics could be achieved by thinner layers of liquid or immobilized amines.
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Amine-modified ordered mesoporous silica: The effect of pore size on CO2 capture performance
TL;DR: In this paper, the effect of pore size of mesoporous silica supports on the CO 2 capture performance of solid amine sorbents was investigated, and the experimental results indicated that the pore sizes had significant influence on CO2 capture performance.
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