2016
DOI: 10.1021/acs.iecr.6b00644
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One-Pot Synthesis and Pelletizing of Polyethylenimine-Containing Mesoporous Silica Powders for CO2 Capture

Abstract: Polyethylenimine-containing mesoporous silica powders (PEI-MSP) were prepared through one-pot synthesis from mixtures of tetraethyl orthosilicate and PEI in water/ methanol. This proposed route required only 4% of reaction time and energy and used 50% of chemical reagents used in two-step synthesis of PEI-loaded SBA-15 (PEI/SBA) prepared through impregnation, thereby decreasing the cost of the resulting adsorbents. The PEI component in the one-pot route functioned not only to provide amine active sites for CO … Show more

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Cited by 52 publications
(32 citation statements)
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“…Recent studies have suggested that highly ordered mesoporous silica supports such as SBA‐, MCM‐type materials are also being explored as the OC host to ensure a uniform dispersion of the active phase within the highly porous silica matrix and to prevent the possible aggregation during prolonged operation of redox cycles . Among the different ordered mesoporous silica supports, SBA‐15 is gaining interest as one of the most promising supports due to their excellent morphological properties, such as high surface area (above 500 m 2 g −1 ), large mesoporous volume (≈1.2 cm 3 g −1 ), well‐defined pores and thicker pore walls (3.1–6.4 nm), small crystallite size of primary particles, and higher thermal and hydrothermal stability, etc . The incorporation of such supports could effectively inhibit the sintering and agglomeration of OCs .…”
Section: Introductionmentioning
confidence: 99%
“…Recent studies have suggested that highly ordered mesoporous silica supports such as SBA‐, MCM‐type materials are also being explored as the OC host to ensure a uniform dispersion of the active phase within the highly porous silica matrix and to prevent the possible aggregation during prolonged operation of redox cycles . Among the different ordered mesoporous silica supports, SBA‐15 is gaining interest as one of the most promising supports due to their excellent morphological properties, such as high surface area (above 500 m 2 g −1 ), large mesoporous volume (≈1.2 cm 3 g −1 ), well‐defined pores and thicker pore walls (3.1–6.4 nm), small crystallite size of primary particles, and higher thermal and hydrothermal stability, etc . The incorporation of such supports could effectively inhibit the sintering and agglomeration of OCs .…”
Section: Introductionmentioning
confidence: 99%
“…Wen et al [33] synthesized an aminefunctionalized mesostructured silica monolith in a one-pot process, where tetraethylenpentamine (TEPA) was used both as the modifier coating onto the resulting monolith and as an additive controlling the generation of micropores in the silica wall. Klinthong et al [34] also prepared a polyethylenimine-containing mesoporous silica in a similar manner to that reported by Wen et al [33] . Cui et al [35] and Kong et al [36] reported the preparation of an aminemodified SiO 2 aerogel using the one-step sol-gel method and supercritical drying.…”
Section: Direct Synthesis (One Pot Synthesis)mentioning
confidence: 68%
“…The resulting TEPAcontaining monoliths possessed considerable mechanical strength, and exhibited a CO 2 adsorption capacity up to 171 mg/g adsorbent (75 °C, 1 atm). Klinthong et al [34] prepared polyethyleniminecontaining mesoporous silica through one-pot synthesis. This proposed route involved a much lower reaction time and energy than that used in the two-step synthesis of PEI/SBA-15 prepared through impregnation, and the CO 2 adsorption capacity and thermal stability of PEI-MSP were comparable to those of PEI/SBA.…”
Section: Co 2 Capture By Amine-silica Composites Prepared By Direct Smentioning
confidence: 99%
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“…The interactions between polydopamine and SiO 2 at the self‐assembly were studied, revealing the hybridization driving forces in nanoscale porous particles (Figure d). In addition, polymers, dendrimers, silicate oligomers, resol, and enzymes have been successfully embedded into the MSM matrices.…”
Section: Fabrication Of a Mesoporous Sensing Interfacementioning
confidence: 99%